{"id":275,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/torsional-vibration\/"},"modified":"2026-07-03T10:16:55","modified_gmt":"2026-07-03T10:16:55","slug":"torsional-vibration","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/ro\/glossary\/torsional-vibration\/","title":{"rendered":"Ce este vibra\u021bia torsional\u0103? Cauze \u0219i efecte"},"content":{"rendered":"<h1>\u00cen\u021belegerea vibra\u021biilor torsionale \u00een ma\u0219inile rotative<\/h1>\n\t\t<section class=\"woocommerce hestia-shop products is-shortcode\" id=\"products\" data-sorder=\"hestia_shop\" >\n\t\t\t\t\t\t<div class=\"\">\n\t\t\t\t\t\t<div class=\"hestia-shop-content\">\n\t\t\t<div class=\"row\" data-aos=\"fade-up\" >\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/balanset-1\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/balanset-1\/\" title=\"Echilibrator portabil \u0219i analizor de vibra\u021bii Balanset-1A\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Balanset-1A kit complet \u2014 echilibrator portabil \u0219i analizor de vibra\u021bii\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-272x182.webp 272w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/ro\/product-category\/devices\/\" rel=\"tag\">Dispozitive<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/ro\/product\/balanset-1\/\" title=\"Echilibrator portabil \u0219i analizor de vibra\u021bii Balanset-1A\">Echilibrator portabil \u0219i analizor de vibra\u021bii Balanset-1A<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>1,975.00<\/span> + TVA (dac\u0103 este cazul)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/ro\/wp-json\/wp\/v2\/glossary\/275?add-to-cart=986\" data-quantity=\"1\" data-product_id=\"986\" data-product_sku=\"BS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/ro\/wp-json\/wp\/v2\/glossary\/275?add-to-cart=986\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_986\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"986\" data-product_sku=\"BS-1\" aria-label=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Portable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u201ePortable balancer &amp; Vibration analyzer Balanset-1A\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_986\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/vibration-sensor\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/vibration-sensor\/\" title=\"Senzor de vibra\u021bii\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Prim-plan senzor de vibra\u021bii Balanset-1A\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3.webp 1280w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/ro\/product-category\/parts\/\" rel=\"tag\">Piese<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/ro\/product\/vibration-sensor\/\" title=\"Senzor de vibra\u021bii\">Senzor de vibra\u021bii<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>90.00<\/span> + TVA (dac\u0103 este cazul)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/ro\/wp-json\/wp\/v2\/glossary\/275?add-to-cart=1820\" data-quantity=\"1\" data-product_id=\"1820\" data-product_sku=\"VS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/ro\/wp-json\/wp\/v2\/glossary\/275?add-to-cart=1820\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1820\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1820\" data-product_sku=\"VS-1\" aria-label=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Vibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u201eVibration sensor\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1820\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/optical-sensor-for-balanset-and-arbalance\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Senzor optic (tahometru cu laser)\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Senzor optic (tahometru cu laser)\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1536x1023.webp 1536w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU.webp 1600w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/ro\/product-category\/parts\/\" rel=\"tag\">Piese<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/ro\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Senzor optic (tahometru cu laser)\">Senzor optic (tahometru cu laser)<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>124.00<\/span> + TVA (dac\u0103 este cazul)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/ro\/wp-json\/wp\/v2\/glossary\/275?add-to-cart=1832\" data-quantity=\"1\" data-product_id=\"1832\" data-product_sku=\"Tach-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/ro\/wp-json\/wp\/v2\/glossary\/275?add-to-cart=1832\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1832\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1832\" data-product_sku=\"Tach-1\" aria-label=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Optical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201eOptical Sensor (Laser Tachometer)\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1832\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/balanset-4\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/balanset-4\/\" title=\"Balanset-4\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Kit de echilibrare a rotorului Vibromera: geant\u0103 de transport, condi\u021bioner de semnal multicanal, analizor portabil, baz\u0103 magnetic\u0103, senzori de vibra\u021bii \u0219i cabluri spiralate.\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4.webp 640w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/ro\/product-category\/devices\/\" rel=\"tag\">Dispozitive<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/ro\/product\/balanset-4\/\" title=\"Balanset-4\">Balanset-4<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>6,803.00<\/span> + TVA (dac\u0103 este cazul)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/ro\/wp-json\/wp\/v2\/glossary\/275?add-to-cart=1833\" data-quantity=\"1\" data-product_id=\"1833\" data-product_sku=\"BS-4\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/ro\/wp-json\/wp\/v2\/glossary\/275?add-to-cart=1833\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1833\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1833\" data-product_sku=\"BS-4\" aria-label=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Balanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201eBalanset-4\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1833\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div><!-- \/.row --><div class=\"row\">\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/magnet-stand\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/magnet-stand\/\" title=\"Stand magnetic Insize-60-kgf\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Baza magnetic\u0103.\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36.webp 1280w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/ro\/product-category\/parts\/\" rel=\"tag\">Piese<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/ro\/product\/magnet-stand\/\" title=\"Stand magnetic Insize-60-kgf\">Stand magnetic Insize-60-kgf<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>46.00<\/span> + TVA (dac\u0103 este cazul)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/ro\/wp-json\/wp\/v2\/glossary\/275?add-to-cart=1852\" data-quantity=\"1\" data-product_id=\"1852\" data-product_sku=\"MS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/ro\/wp-json\/wp\/v2\/glossary\/275?add-to-cart=1852\" 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class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/reflective-tape\/\" title=\"Band\u0103 reflectorizant\u0103\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Band\u0103 reflectorizant\u0103\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-16x12.webp 16w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-272x182.webp 272w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/ro\/product-category\/parts\/\" rel=\"tag\">Piese<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/ro\/product\/reflective-tape\/\" title=\"Band\u0103 reflectorizant\u0103\">Band\u0103 reflectorizant\u0103<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>10.00<\/span> + TVA (dac\u0103 este cazul)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/ro\/wp-json\/wp\/v2\/glossary\/275?add-to-cart=2329\" data-quantity=\"1\" data-product_id=\"2329\" data-product_sku=\"rt-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/ro\/wp-json\/wp\/v2\/glossary\/275?add-to-cart=2329\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_2329\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"2329\" data-product_sku=\"rt-1\" aria-label=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Reflective tape\u201d\" rel=\"nofollow\" data-success_message=\"\u201eReflective tape\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_2329\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/dynamic-balancer-balanset-1a\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/dynamic-balancer-balanset-1a\/\" title=\"Echilibrator dinamic &quot;Balanset-1A&quot; OEM\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Con\u021binutul kitului Balanset-1A cu unitate de interfa\u021b\u0103, senzori, tahometru \u0219i accesorii\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-1024x683.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-1536x1024.webp 1536w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-2048x1366.webp 2048w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-e1732998877834.webp 708w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/ro\/product-category\/devices\/\" rel=\"tag\">Dispozitive<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/ro\/product\/dynamic-balancer-balanset-1a\/\" title=\"Echilibrator dinamic &quot;Balanset-1A&quot; OEM\">Echilibrator dinamic \"Balanset-1A\" OEM<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>1,735.00<\/span> + TVA (dac\u0103 este cazul)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/ro\/wp-json\/wp\/v2\/glossary\/275?add-to-cart=4193\" data-quantity=\"1\" data-product_id=\"4193\" data-product_sku=\"BS-1OEM\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/ro\/wp-json\/wp\/v2\/glossary\/275?add-to-cart=4193\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_4193\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"4193\" data-product_sku=\"BS-1OEM\" aria-label=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Dynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"\u201eDynamic balancer \u201cBalanset-1A\u201d OEM\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_4193\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/section>\n\t\t\n<p><strong>Vibra\u021bii torsionale<\/strong> este oscila\u021bia unghiular\u0103 a unui arbore rotativ \u00een jurul propriului s\u0103u ax \u2014 o mi\u0219care de r\u0103sucire \u0219i de desf\u0103\u0219urare \u00een care diferite sec\u021biuni ale arborelui se rotesc momentan cu viteze u\u0219or diferite. Spre deosebire de <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/lateral-vibration\/\">vibra\u021bii laterale<\/a> (mi\u0219care lateral\u0103) sau <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/axial-vibration\/\">vibra\u021bii axiale<\/a> (mi\u0219care de du-te-vino de-a lungul arborelui), vibra\u021bia torsional\u0103 nu implic\u0103 nicio deplasare liniar\u0103; arborele pur \u0219i simplu accelereaz\u0103 \u0219i \u00eencetine\u0219te \u00een jurul rota\u021biei medii, suferind o accelera\u021bie unghiular\u0103 alternativ\u0103 pozitiv\u0103 \u0219i negativ\u0103. De\u0219i amplitudinile sale sunt de obicei mult mai mici dec\u00e2t cele ale vibra\u021biilor laterale \u0219i este extrem de greu de detectat, aceasta poate genera tensiuni alternative enorme \u00een arbori, cuplaje \u0219i angrenaje \u2014 \u0219i este unul dintre pu\u021binele moduri de defectare care pot distruge un sistem de transmisie aproape f\u0103r\u0103 niciun avertisment.<\/p>\n<h2>1. Mecanismul fizic<\/h2>\n<h3>Cum se produce vibra\u021bia torsional\u0103<\/h3>\n<p>Cel mai u\u0219or este s\u0103 ne imagin\u0103m mecanismul ca pe un sistem arc-mas\u0103 \u00eenf\u0103\u0219urat \u00een jurul axei de rota\u021bie:<\/p>\n<ul>\n<li>Imagina\u021bi-v\u0103 un arbore lung care conecteaz\u0103 un motor la o sarcin\u0103 ac\u021bionat\u0103<\/li>\n<li>Arborele se comport\u0103 ca un arc de torsiune, acumul\u00e2nd \u0219i eliber\u00e2nd energie pe m\u0103sur\u0103 ce se r\u0103suce\u0219te.<\/li>\n<li>Atunci c\u00e2nd este supus unui cuplu variabil, arborele oscileaz\u0103, unele sec\u021biuni rotindu-se mai repede, iar altele mai \u00eencet dec\u00e2t viteza medie.<\/li>\n<li>Aceste oscila\u021bii se amplific\u0103 dramatic dac\u0103 frecven\u021ba de excita\u021bie coincide cu o frecven\u021b\u0103 natural\u0103 de torsiune \u2014 o frecven\u021b\u0103 de torsiune <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/resonance\/\">rezonan\u021b\u0103<\/a>.<\/li>\n<\/ul>\n<h3>Frecven\u021be naturale de torsiune<\/h3>\n<p>Fiecare sistem de arbori are frecven\u021be proprii de torsiune determinate de:<\/p>\n<ul>\n<li><strong>Rigiditatea la torsiune a arborelui:<\/strong> o func\u021bie a diametrului arborelui, a lungimii \u0219i a modulului de forfecare al materialului.<\/li>\n<li><strong>Iner\u021bie sistem:<\/strong> momentele de iner\u021bie ale componentelor rotative conectate \u2014 rotorul motorului, cuplajele, angrenajele \u0219i sarcina.<\/li>\n<li><strong>Moduri multiple:<\/strong> Sistemele de transmisie complexe au mai multe frecven\u021be naturale de torsiune, nu doar una singur\u0103.<\/li>\n<li><strong>Efectele de cuplare:<\/strong> Cuplajele flexibile adaug\u0103 flexibilitate torsional\u0103, reduc\u00e2nd frecven\u021bele naturale<\/li>\n<\/ul>\n<p>Deoarece aceste frecven\u021be depind doar de rigiditate \u0219i iner\u021bie \u2014 \u0219i niciodat\u0103 de lag\u0103re sau de funda\u021bie \u2014 o ma\u0219in\u0103 care func\u021bioneaz\u0103 silen\u021bios din punct de vedere mecanic \u00een sens radial poate totu\u0219i s\u0103 se afle \u00eentr-o rezonan\u021b\u0103 torsional\u0103 periculoas\u0103.<\/p>\n<h2>2. Cauzele principale ale vibra\u021biilor de torsiune<\/h2>\n<h3>1. Cuplu variabil de la motoarele cu piston<\/h3>\n<p>Cea mai comun\u0103 surs\u0103 \u00een multe aplica\u021bii:<\/p>\n<ul>\n<li><strong>Motoare diesel \u0219i pe benzin\u0103:<\/strong> fiecare proces de combustie genereaz\u0103 un impuls de cuplu, mai degrab\u0103 dec\u00e2t o for\u021b\u0103 de trac\u021biune continu\u0103.<\/li>\n<li><strong>Ordinea de aprindere:<\/strong> genereaz\u0103 armonici ale tura\u021biei motorului.<\/li>\n<li><strong>Num\u0103rul de cilindri:<\/strong> Un num\u0103r mai mic de cilindri genereaz\u0103 o varia\u021bie mai mare a cuplului pe rota\u021bie.<\/li>\n<li><strong>Risc de rezonan\u021b\u0103:<\/strong> viteza de func\u021bionare poate coincide cu o torsiune <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/critical-speed\/\">vitez\u0103 critic\u0103<\/a>.<\/li>\n<\/ul>\n<h3>2. For\u021bele de angrenare a ro\u021bilor din\u021bate<\/h3>\n<p>Sistemele de angrenaje genereaz\u0103, \u00een mod firesc, excita\u021bii torsionale:<\/p>\n<ul>\n<li>The <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/gear-mesh-frequency\/\">frecven\u021ba de angrenare<\/a> (num\u0103rul de din\u021bi \u00d7 tura\u021bia) genereaz\u0103 un cuplu oscilant.<\/li>\n<li>La acestea se adaug\u0103 erorile de spa\u021biere \u00eentre din\u021bi \u0219i inexactit\u0103\u021bile de profil.<\/li>\n<li><a href=\"https:\/\/vibromera.eu\/ro\/glossary\/backlash\/\">Gear backlash<\/a> poate provoca solicit\u0103ri de \u0219oc atunci c\u00e2nd din\u021bii se separ\u0103 \u0219i se reangajeaz\u0103.<\/li>\n<li>Etapele multiple de angrenare creeaz\u0103 sisteme de torsiune complexe, cu mai multe moduri de func\u021bionare.<\/li>\n<\/ul>\n<h3>3. Probleme ale motorului electric<\/h3>\n<p>Motoarele electrice pot genera singure perturba\u021bii torsionale:<\/p>\n<ul>\n<li><strong><a href=\"https:\/\/vibromera.eu\/ro\/glossary\/pole-pass-frequency\/\">Frecven\u021ba de trecere a polilor<\/a>:<\/strong> Interac\u021biunea dintre rotor \u0219i stator creeaz\u0103 un cuplu pulsatoriu<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/ro\/glossary\/broken-rotor-bars\/\">Bare de rotor rupte<\/a>:<\/strong> genereaz\u0103 impulsuri de cuplu la <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/slip-frequency\/\">frecven\u021ba de alunecare<\/a>.<\/li>\n<li><strong>Convertoare de frecven\u021b\u0103 (VFD):<\/strong> Comutarea PWM poate excita direct modurile de torsiune.<\/li>\n<li><strong>Regimuri tranzitorii de pornire:<\/strong> La pornirea motorului se produc oscila\u021bii mari ale cuplului pe m\u0103sur\u0103 ce rotorul accelereaz\u0103.<\/li>\n<\/ul>\n<h3>4. Varia\u021bii ale \u00eenc\u0103rc\u0103rii procesului<\/h3>\n<p>Sarcina variabil\u0103 exercitat\u0103 asupra echipamentului ac\u021bionat transmite impulsuri de cuplu \u00eenapoi c\u0103tre sistemul de transmisie:<\/p>\n<ul>\n<li>Compresor <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/surging\/\">surge<\/a> events.<\/li>\n<li>Pomp\u0103 <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/cavitation\/\">cavita\u021bie<\/a> gener\u00e2nd v\u00e2rfuri de cuplu.<\/li>\n<li>Sarcini ciclice \u00een concasoare, mori \u0219i prese.<\/li>\n<li><a href=\"https:\/\/vibromera.eu\/ro\/glossary\/blade-passing-frequency\/\">Blade-passing<\/a> for\u021bele care ac\u021bioneaz\u0103 asupra ventilatoarelor \u0219i turbinelor.<\/li>\n<\/ul>\n<h3>5. Probleme legate de cuplaj \u0219i transmisie<\/h3>\n<ul>\n<li>Cuplaje uzate sau deteriorate, care prezint\u0103 joc sau joc unghiular \u2014 a se vedea <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/coupling-defects\/\">defecte de cuplare<\/a>.<\/li>\n<li>Articula\u021bii universale care func\u021bioneaz\u0103 sub unghi, gener\u00e2nd o excita\u021bie torsional\u0103 dubl\u0103.<\/li>\n<li>Alunecarea \u0219i vibra\u021biile transmisiei cu curea.<\/li>\n<li>Mecanism poligonal cu transmisie prin lan\u021b.<\/li>\n<\/ul>\n<h2>3. Provoc\u0103ri legate de detectare \u0219i m\u0103surare<\/h2>\n<h3>De ce vibra\u021biile torsionale sunt dificil de detectat<\/h3>\n<p>Spre deosebire de vibra\u021biile laterale, vibra\u021biile torsionale nu sunt incluse \u00een setul standard de instrumente:<\/p>\n<ul>\n<li><strong>F\u0103r\u0103 deplasare radial\u0103:<\/strong> ordinary <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/accelerometer\/\">accelerometre<\/a> pe carcasele de rulmen\u021bi pur \u0219i simplu nu pot detecta o mi\u0219care pur torsional\u0103.<\/li>\n<li><strong>Amplitudini unghiulare mici:<\/strong> amplitudinile tipice sunt frac\u021biuni de grad.<\/li>\n<li><strong>Echipament special necesar:<\/strong> sunt necesari senzori de torsiune specializa\u021bi sau analize sofisticate.<\/li>\n<li><strong>Adesea trecute cu vederea:<\/strong> este rar inclus\u0103 \u00eentr-un program de rutin\u0103 de <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/vibration-monitoring\/\">monitorizarea vibra\u021biilor<\/a> program, a\u0219a c\u0103 primul semn este adesea o defec\u021biune.<\/li>\n<\/ul>\n<h3>Metode de m\u0103surare<\/h3>\n<h4>1. Tensometre<\/h4>\n<ul>\n<li>Montat la un unghi de 45\u00b0 fa\u021b\u0103 de axa arborelui pentru a m\u0103sura deforma\u021bia de forfecare.<\/li>\n<li>Require a <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/telemetry\/\">telemetrie<\/a> sistem de transmitere a semnalului de la arborele rotativ.<\/li>\n<li>Ofer\u0103 o m\u0103sur\u0103toare direct\u0103 a tensiunii de torsiune.<\/li>\n<li>Cea mai precis\u0103 metod\u0103, dar complex\u0103 \u0219i costisitoare.<\/li>\n<\/ul>\n<h4>2. Senzori de vibra\u021bii torsionale cu sond\u0103 dubl\u0103<\/h4>\n<ul>\n<li>Doi senzori optici sau magnetici m\u0103soar\u0103 viteza \u00een diferite puncte ale arborelui.<\/li>\n<li>Diferen\u021ba de faz\u0103 dintre cele dou\u0103 semnale eviden\u021biaz\u0103 vibra\u021bia de torsiune.<\/li>\n<li>M\u0103surare f\u0103r\u0103 contact.<\/li>\n<li>Poate fi montat temporar sau permanent.<\/li>\n<\/ul>\n<h4>3. Vibrometre torsionale cu laser<\/h4>\n<ul>\n<li>M\u0103surarea optic\u0103 a varia\u021biilor vitezei unghiulare a arborelui.<\/li>\n<li>F\u0103r\u0103 contact, f\u0103r\u0103 a fi necesar\u0103 preg\u0103tirea arborelui.<\/li>\n<li>Scump, dar foarte eficient pentru depanare.<\/li>\n<\/ul>\n<h4>4. Indicatori indirec\u021bi<\/h4>\n<ul>\n<li>Analiza caracteristicilor curentului motorului (MCSA) poate eviden\u021bia probleme legate de torsiune din punct de vedere electric.<\/li>\n<li>Modele de uzur\u0103 a cuplajelor \u0219i a din\u021bilor angrenajelor.<\/li>\n<li>Arbore <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/fatigue\/\">oboseal\u0103<\/a>-pozi\u021biile \u0219i orient\u0103rile fisurilor.<\/li>\n<li>Modele neobi\u0219nuite de vibra\u021bii laterale care pot fi cuplate cu moduri de torsiune<\/li>\n<\/ul>\n<h2>4. Consecin\u021be \u0219i mecanisme de producere a daunelor<\/h2>\n<h3>Defec\u021biuni la oboseal\u0103<\/h3>\n<p>Principalul pericol al vibra\u021biilor de torsiune \u00eel reprezint\u0103 oboseala materialelor la cicluri repetate:<\/p>\n<ul>\n<li><strong>Defec\u021biuni arbore:<\/strong> fisurile de oboseal\u0103 se formeaz\u0103 de obicei la un unghi de 45\u00b0 fa\u021b\u0103 de axa arborelui, de-a lungul planurilor de tensiune de forfecare maxim\u0103.<\/li>\n<li><strong>Defec\u021biuni ale cuplajelor:<\/strong> uzura din\u021bilor cuplajelor cu ro\u021bi din\u021bate \u0219i oboseala elementelor flexibile.<\/li>\n<li><strong>Ruptura din\u021bilor angrenajului:<\/strong> accelerat\u0103 de oscila\u021biile de torsiune, contribuind la <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/gear-defects\/\">defecte ale angrenajului<\/a>.<\/li>\n<li><strong>Deteriorarea penei \u0219i a canalului de pan\u0103:<\/strong> uzura prin frecare (fretting) \u0219i uzura cauzat\u0103 de cuplul care se inverseaz\u0103 constant.<\/li>\n<\/ul>\n<h3>Caracteristicile defec\u021biunilor torsionale<\/h3>\n<ul>\n<li>Adesea brusc \u0219i catastrofal, f\u0103r\u0103 niciun semn prevestitor.<\/li>\n<li>Suprafe\u021bele de rupere formeaz\u0103 un unghi de aproximativ 45\u00b0 fa\u021b\u0103 de axa arborelui.<\/li>\n<li>Urme de plaj\u0103 pe suprafa\u021ba de rupere care indic\u0103 evolu\u021bia fisurii de oboseal\u0103.<\/li>\n<li>Se poate \u00eent\u00e2mpla chiar \u0219i atunci c\u00e2nd nivelurile de vibra\u021bii laterale sunt perfect acceptabile \u2014 motiv pentru care problemele de torsiune trec adesea neobservate.<\/li>\n<\/ul>\n<h3>Probleme de performan\u021b\u0103<\/h3>\n<ul>\n<li>Probleme legate de controlul vitezei \u00een sistemele de ac\u021bionare de precizie.<\/li>\n<li>Uzura excesiv\u0103 a cutiilor de viteze \u0219i a cuplajelor.<\/li>\n<li>Zgomot produs de z\u0103ng\u0103nitul angrenajelor \u0219i de loviturile cuplajului.<\/li>\n<li>Ineficien\u021ba transmiterii puterii.<\/li>\n<\/ul>\n<h2>5. Analiz\u0103 \u0219i modelare<\/h2>\n<h3>Analiza torsional\u0103 \u00een timpul proiect\u0103rii<\/h3>\n<p>O proiectare solid\u0103 necesit\u0103 o <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/torsional-analysis\/\">analiza torsional\u0103<\/a>:<\/p>\n<ul>\n<li><strong>Calculul frecven\u021bei naturale:<\/strong> s\u0103 se determine fiecare vitez\u0103 critic\u0103 de torsiune.<\/li>\n<li><strong>Analiza r\u0103spunsurilor for\u021bate:<\/strong> s\u0103 prevad\u0103 amplitudinile de torsiune \u00een condi\u021bii de func\u021bionare.<\/li>\n<li><strong>Diagrama Campbell:<\/strong> o <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/campbell-diagram\/\">Diagrama Campbell<\/a> reprezint\u0103 grafic frecven\u021bele proprii de torsiune \u00een func\u021bie de tura\u021bia de func\u021bionare pentru a eviden\u021bia eventualele coinciden\u021be.<\/li>\n<li><strong>Analiza tensiunilor:<\/strong> calcula\u021bi tensiunile de forfecare alternative din componentele critice.<\/li>\n<li><strong>Estimarea duratei de via\u021b\u0103 la oboseal\u0103:<\/strong> estimarea duratei de via\u021b\u0103 a componentelor sub sarcin\u0103 de torsiune \u2014 a <a href=\"https:\/\/vibromera.eu\/ro\/calculators\/fatigue-life-calculator\/\">calculator de via\u021b\u0103 la oboseal\u0103<\/a> transform\u0103 solicitarea alternativ\u0103 \u0219i o curb\u0103 S-N \u00eentr-un num\u0103r estimat de cicluri.<\/li>\n<\/ul>\n<h3>Instrumente software<\/h3>\n<p>Analizele mai complexe sunt efectuate de un software specializat:<\/p>\n<ul>\n<li>Modele cu mase concentrate cu iner\u021bie multipl\u0103.<\/li>\n<li>Analiza de torsiune prin metoda elementelor finite.<\/li>\n<li>Simularea \u00een domeniul timpului a evenimentelor tranzitorii, cum ar fi pornirea motoarelor \u0219i scurtcircuitele.<\/li>\n<li>Analiza armonic\u0103 \u00een domeniul frecven\u021belor.<\/li>\n<\/ul>\n<h2>6. Metode de atenuare \u0219i control<\/h2>\n<h3>Solu\u021bii de design<\/h3>\n<ul>\n<li><strong>Margini de separare:<\/strong> men\u021bine\u021bi frecven\u021bele naturale de torsiune la o distan\u021b\u0103 de cel pu\u021bin \u00b120% fa\u021b\u0103 de frecven\u021bele de excita\u021bie.<\/li>\n<li><strong>Amortizare:<\/strong> s\u0103 includ\u0103 amortizoare de torsiune (de tip v\u00e2scos sau prin frecare) pentru a disipa energia \u2014 aspectul practic al mecanicii <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/damping\/\">amortizare<\/a>.<\/li>\n<li><strong>Cuplaje flexibile:<\/strong> se adaug\u0103 conforman\u021b\u0103 torsional\u0103 pentru a reduce frecven\u021bele naturale sub domeniul de excita\u021bie.<\/li>\n<li><strong>Mass tuning:<\/strong> Ad\u0103uga\u021bi volante sau modifica\u021bi iner\u021biile pentru a schimba frecven\u021bele naturale<\/li>\n<li><strong>Modific\u0103ri ale rigidit\u0103\u021bii:<\/strong> s\u0103 modifice diametrele arborilor sau rigiditatea cuplajului.<\/li>\n<\/ul>\n<h3>Solu\u021bii Opera\u021bionale<\/h3>\n<ul>\n<li><strong>Limit\u0103ri de vitez\u0103:<\/strong> evita\u021bi func\u021bionarea continu\u0103 la viteza critic\u0103 de torsiune.<\/li>\n<li><strong>Accelera\u021bie rapid\u0103:<\/strong> s\u0103 dep\u0103\u0219easc\u0103 rapid vitezele critice \u00een timpul pornirii.<\/li>\n<li><strong>Gestionarea sarcinii:<\/strong> evita\u021bi condi\u021biile de func\u021bionare care provoac\u0103 modurile de torsiune.<\/li>\n<li><strong>VFD tuning:<\/strong> regla\u021bi parametrii de ac\u021bionare pentru a reduce la minimum excita\u021bia torsional\u0103.<\/li>\n<\/ul>\n<h3>Selectarea componentelor<\/h3>\n<ul>\n<li><strong>Cuplaje cu amortizare ridicat\u0103:<\/strong> cuplaje elastomerice sau hidraulice care absorb energia de torsiune.<\/li>\n<li><strong>Amortizoare de torsiune:<\/strong> dispozitive special concepute pentru ac\u021bionarea motoarelor cu piston.<\/li>\n<li><strong>Calitatea angrenajului:<\/strong> angrenajele de precizie cu toleran\u021be str\u00e2nse reduc excita\u021bia la surs\u0103.<\/li>\n<li><strong>Material arbore:<\/strong> Materiale cu rezisten\u021b\u0103 ridicat\u0103 la oboseal\u0103 pentru arbori critici din punct de vedere torsional<\/li>\n<\/ul>\n<h2>7. Aplica\u021bii \u0219i standarde industriale<\/h2>\n<h3>Aplica\u021bii critice<\/h3>\n<p>O analiz\u0103 de torsiune este deosebit de important\u0103 pentru:<\/p>\n<ul>\n<li><strong>Sisteme de ac\u021bionare cu motor cu piston:<\/strong> generatoare diesel \u0219i compresoare cu motor pe gaz.<\/li>\n<li><strong>Arbori de transmisie lungi:<\/strong> propulsie marin\u0103 \u0219i laminoare.<\/li>\n<li><strong>Cutii de viteze de mare putere:<\/strong> turbine eoliene \u0219i transmisii industriale.<\/li>\n<li><strong>Convertoare de frecven\u021b\u0103:<\/strong> Aplica\u021bii ale motoarelor cu variator de frecven\u021b\u0103 \u0219i sisteme servo.<\/li>\n<li><strong>Sisteme cu mai multe corpuri:<\/strong> sisteme de transmisie complexe cu mai multe ma\u0219ini conectate.<\/li>\n<\/ul>\n<h3>Standarde relevante<\/h3>\n<ul>\n<li><strong><a href=\"https:\/\/vibromera.eu\/ro\/glossary\/api-684\/\">API 684<\/a>:<\/strong> dinamica rotorului, inclusiv procedurile de analiz\u0103 torsional\u0103.<\/li>\n<li><strong>API 617:<\/strong> cerin\u021be privind analiza torsional\u0103 pentru compresoarele centrifuge.<\/li>\n<li><strong>API 672:<\/strong> analiza de torsiune pentru compresoarele cu piston \u00een bloc.<\/li>\n<li><strong>ISO 22266:<\/strong> vibra\u021biile de torsiune ale ma\u0219inilor rotative.<\/li>\n<li><strong>VDI 2039:<\/strong> torsional vibration of drivelines &mdash; calculation, measurement, reduction.<\/li>\n<\/ul>\n<h2>8. Rela\u021bia cu alte tipuri de vibra\u021bii<\/h2>\n<p>De\u0219i se deosebe\u0219te de vibra\u021biile laterale \u0219i axiale, vibra\u021bia de torsiune nu r\u0103m\u00e2ne \u00eentotdeauna izolat\u0103 \u2014 ea se poate cupla cu celelalte moduri:<\/p>\n<ul>\n<li><strong>Cuplajul lateral-torsional:<\/strong> \u00cen anumite configura\u021bii geometrice, modurile de torsiune \u0219i cele laterale interac\u021bioneaz\u0103 \u0219i fac schimb de energie.<\/li>\n<li><strong>Angrenaj:<\/strong> Vibra\u021biile de torsiune modific\u0103 sarcinile exercitate asupra din\u021bilor, ceea ce, la r\u00e2ndul s\u0103u, genereaz\u0103 vibra\u021bii laterale.<\/li>\n<li><strong>Articula\u021bii universale:<\/strong> unghiular <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/misalignment\/\">nealiniere<\/a> cupleaz\u0103 o intrare torsional\u0103 \u00eentr-o ie\u0219ire lateral\u0103.<\/li>\n<li><strong>Provocare de diagnostic:<\/strong> o semn\u0103tur\u0103 vibra\u021bional\u0103 complex\u0103 poate con\u021bine contribu\u021bii din mai multe tipuri de vibra\u021bii simultan, motiv pentru care o defec\u021biune care nu se remediaz\u0103 prin echilibrare sau aliniere se dovede\u0219te uneori a fi de origine torsional\u0103.<\/li>\n<\/ul>\n<p>\u00cen activitatea de teren de rutin\u0103, lec\u021bia practic\u0103 este c\u0103, \u00een spatele valorilor radiale f\u0103r\u0103 abateri se ascund probleme legate de torsiune. Atunci c\u00e2nd se utilizeaz\u0103 un analizor portabil, cum ar fi <a href=\"https:\/\/vibromera.eu\/ro\/produs\/balanset-1\/\">Balanset-1A<\/a> confirm\u0103 c\u0103 1X <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/unbalance\/\">dezechilibru<\/a> \u0219i <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/misalignment\/\">nealiniere<\/a> dac\u0103 valorile se \u00eencadreaz\u0103 \u00een limitele de toleran\u021b\u0103, dar sistemul de transmisie continu\u0103 s\u0103 sufere defec\u021biuni repetate la nivelul arborelui, al cuplajului sau al angrenajelor, urm\u0103torul pas logic este efectuarea unei analize a vibra\u021biilor torsionale. \u00cen\u021belegerea \u0219i gestionarea vibra\u021biilor torsionale sunt esen\u021biale pentru func\u021bionarea fiabil\u0103 a sistemelor de transmisie a puterii: de\u0219i li se acord\u0103 mai pu\u021bin\u0103 aten\u021bie dec\u00e2t vibra\u021biilor laterale \u00een cadrul monitoriz\u0103rii de rutin\u0103, acestea sunt de o importan\u021b\u0103 crucial\u0103 \u00een faza de proiectare \u0219i depanare a sistemelor de ac\u021bionare de mare putere sau de precizie, unde defec\u021biunile torsionale pot avea consecin\u021be catastrofale.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/ro\/glossary\/\">\u2190 \u00cenapoi la indexul principal<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Afla\u021bi despre vibra\u021biile torsionale, oscila\u021bia de r\u0103sucire a arborilor rotativi \u00een jurul axei lor, care poate provoca defec\u021biuni prin oboseal\u0103 la cuplaje, angrenaje \u0219i sisteme de transmisie.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,110],"tags":[],"class_list":["post-275","glossary","type-glossary","status-publish","hentry","category-glossary","category-vibration-diagnostics"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/glossary\/275","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":2,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/glossary\/275\/revisions"}],"predecessor-version":[{"id":102192,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/glossary\/275\/revisions\/102192"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/media?parent=275"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/categories?post=275"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/tags?post=275"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}