{"id":122,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/forced-vibration\/"},"modified":"2026-05-23T22:43:10","modified_gmt":"2026-05-23T22:43:10","slug":"forced-vibration","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/ro\/glossary\/forced-vibration\/","title":{"rendered":"Ce este vibra\u021bia for\u021bat\u0103? R\u0103spunsul la excita\u021bie extern\u0103"},"content":{"rendered":"<h1>\u00cen\u021belegerea vibra\u021biilor for\u021bate<\/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\/122?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\/122?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\/122?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\/122?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\/122?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\/122?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\/122?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\/122?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\/122?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\/122?add-to-cart=1852\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1852\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1852\" data-product_sku=\"MS-1\" aria-label=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Magnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"\u201eMagnetic Stand Insize-60-kgf\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_1852\" 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\/reflective-tape\/\" 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\/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\/122?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\/122?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\/122?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\/122?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 for\u021bate<\/strong> este o mi\u0219care oscilatorie provocat\u0103 de o for\u021b\u0103 periodic\u0103 extern\u0103 care ac\u021bioneaz\u0103 asupra unui sistem mecanic. Vibra\u021bia are loc la frecven\u021ba for\u021bei aplicate \u2014 frecven\u021ba de excita\u021bie \u2014 iar amplitudinea ei este propor\u021bional\u0103 cu intensitatea acelei for\u021be \u0219i invers propor\u021bional\u0103 cu rezisten\u021ba sistemului la mi\u0219care la acea frecven\u021b\u0103. Marea majoritate a <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/vibration\/\">vibra\u021bii<\/a> \u00een cazul ma\u0219inilor rotative este vorba de vibra\u021bii for\u021bate, cauzele obi\u0219nuite fiind <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/unbalance\/\">dezechilibru<\/a> (o for\u021b\u0103 centrifug\u0103 de rota\u021bie), <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/misalignment\/\">nealiniere<\/a> (for\u021bele de cuplare) \u0219i pulsa\u021biile aerodinamice sau hidraulice. Vibra\u021biile for\u021bate sunt fundamental diferite de <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/self-excited-vibration\/\">vibra\u021bie autoexcitat\u0103<\/a>, \u00een care sistemul genereaz\u0103 \u0219i men\u021bine propria oscila\u021bie, precum \u0219i din vibra\u021bia liber\u0103, \u0219i anume dec\u0103derea tranzitorie care urmeaz\u0103 unui impuls. \u00cen\u021belegerea acestor principii este important\u0103 deoarece ele explic\u0103 modul \u00een care amplitudinea vibra\u021biei este corelat\u0103 cu gravitatea defectelor \u0219i modul \u00een care vibra\u021bia poate fi controlat\u0103 \u2014 fie prin reducerea for\u021bei de excita\u021bie, fie prin modificarea r\u0103spunsului sistemului.<\/p>\n<h2>1. Caracteristicile vibra\u021biilor for\u021bate<\/h2>\n<h3>Adaptarea frecven\u021belor<\/h3>\n<ul>\n<li>Frecven\u021ba de vibra\u021bie este egal\u0103 cu frecven\u021ba de excita\u021bie \u2014 dac\u0103 se aplic\u0103 o for\u021b\u0103 de excita\u021bie de 30 Hz, sistemul vibreaz\u0103 la 30 Hz.<\/li>\n<li>Spre deosebire de vibra\u021bia autoexcitat\u0103, care se fixeaz\u0103 pe o <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/natural-frequency\/\">frecven\u021b\u0103 natural\u0103<\/a> indiferent de viteza de deplasare.<\/li>\n<li>Prin urmare, frecven\u021ba poate fi determinat\u0103 direct pe baza sursei de for\u021bare.<\/li>\n<\/ul>\n<h3>Propor\u021bionalitatea amplitudinii<\/h3>\n<ul>\n<li>Amplitudinea este propor\u021bional\u0103 cu intensitatea for\u021bei: dac\u0103 dublezi for\u021ba, (\u00eentr-un sistem liniar) dublezi amplitudinea vibra\u021biei.<\/li>\n<li>\u00cendep\u0103rta\u021bi for\u021ba exercitat\u0103 \u0219i vibra\u021biile \u00eenceteaz\u0103 \u2014 tocmai de aceea este controlabil.<\/li>\n<\/ul>\n<h3>Rela\u021bia de faz\u0103<\/h3>\n<ul>\n<li>Exist\u0103 o rela\u021bie de faz\u0103 clar\u0103 <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/phase\/\">faz\u0103<\/a> rela\u021bia dintre for\u021b\u0103 \u0219i reac\u021bie.<\/li>\n<li>Aceast\u0103 faz\u0103 depinde de raportul dintre frecven\u021ba de excita\u021bie \u0219i frecven\u021ba natural\u0103:<\/li>\n<li><strong>Sub rezonan\u021b\u0103:<\/strong> vibra\u021bia este, \u00een esen\u021b\u0103, \u00een faz\u0103 cu for\u021ba.<\/li>\n<li><strong>At resonance:<\/strong> o \u00eent\u00e2rziere de faz\u0103 de 90\u00b0.<\/li>\n<li><strong>Peste rezonan\u021b\u0103:<\/strong> o \u00eent\u00e2rziere de faz\u0103 de 180\u00b0.<\/li>\n<\/ul>\n<h3>Stabilitate<\/h3>\n<ul>\n<li>Sistemul este stabil: vibra\u021biile sunt limitate \u0219i nu cresc la nesf\u00e2r\u0219it.<\/li>\n<li>Amplitudinea este determinat\u0103 at\u00e2t de for\u021ba aplicat\u0103, c\u00e2t \u0219i de r\u0103spunsul sistemului \u2014 spre deosebire de vibra\u021biile autoexcitate instabile, care pot cre\u0219te necontrolat p\u00e2n\u0103 c\u00e2nd o neliniaritate le opre\u0219te.<\/li>\n<\/ul>\n<h2>2. Func\u021bii de ac\u021bionare uzuale \u00een domeniul utilajelor<\/h2>\n<h3>Dezechilibru \u2014 1\u00d7 for\u021bare<\/h3>\n<ul>\n<li><strong>For\u021b\u0103:<\/strong> o for\u021b\u0103 centrifug\u0103 generat\u0103 de excentricitatea masei.<\/li>\n<li><strong>Frecven\u0163\u0103:<\/strong> o dat\u0103 pe rota\u021bie (1\u00d7 viteza arborelui).<\/li>\n<li><strong>Magnitudine:<\/strong> F = m\u00b7r\u00b7\u03c9\u00b2, deci cre\u0219te odat\u0103 cu <em>p\u0103trat<\/em> of speed.<\/li>\n<li><strong>Semnifica\u0163ie:<\/strong> principala surs\u0103 de vibra\u021bii \u00een majoritatea echipamentelor rotative.<\/li>\n<\/ul>\n<p>Merit\u0103 s\u0103 ne oprim pu\u021bin asupra acestei dependen\u021be de \u03c9\u00b2: dublarea vitezei de rota\u021bie quadrupleaz\u0103 for\u021ba de dezechilibru, motiv pentru care un rotor care func\u021bioneaz\u0103 silen\u021bios la vitez\u0103 redus\u0103 poate vibra violent atunci c\u00e2nd este adus la viteza de lucru. Pute\u021bi cuantifica acest fenomen cu ajutorul <a href=\"https:\/\/vibromera.eu\/ro\/calculators\/centrifugal-force-unbalance\/\">Calculator de for\u021b\u0103 centrifug\u0103 din dezechilibru<\/a>.<\/p>\n<h3>Celelalte surse principale<\/h3>\n<ul>\n<li><strong>Dezaliniere \u2014 for\u021bare 2\u00d7:<\/strong> for\u021bele de cuplare generate de deplasarea unghiular\u0103 sau paralel\u0103, care produc vibra\u021bii la o frecven\u021b\u0103 dubl\u0103 fa\u021b\u0103 de cea a arborelui \u0219i o frecven\u021b\u0103 caracteristic\u0103 ridicat\u0103 <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/axial-vibration\/\">axial<\/a> component.<\/li>\n<li><strong>Aerodinamic \/ hidraulic (cu trecerea palelor sau a lamelor):<\/strong> puls\u0103rile de presiune generate de interac\u021biunea dintre palete \u0219i stator la un num\u0103r de palete \u00d7 viteza arborelui \u2014 caracteristic\u0103 specific\u0103 ventilatoarelor, pompelor \u0219i compresoarelor, ac\u021bionate de <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/aerodynamic-forces\/\">aerodinamic<\/a> \u0219i <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/hydraulic-forces\/\">for\u021be hidraulice<\/a>.<\/li>\n<li><strong>For\u021bele de angrenare:<\/strong> angajarea din\u021bilor, gener\u00e2nd o sarcin\u0103 periodic\u0103 egal\u0103 cu produsul dintre num\u0103rul de din\u021bi \u0219i viteza arborelui ( <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/gear-mesh-frequency\/\">frecven\u021ba de angrenare<\/a>), a c\u0103rei amplitudine depinde de cuplul transmis \u0219i de calitatea din\u021bilor.<\/li>\n<li><strong>For\u021be electromagnetice:<\/strong> puls\u0103rile c\u00e2mpului magnetic \u00een motoare \u0219i generatoare la o frecven\u021b\u0103 dubl\u0103 fa\u021b\u0103 de cea a re\u021belei (120 Hz la o re\u021bea de 60 Hz, 100 Hz la o re\u021bea de 50 Hz) \u2014 fiind \u00een mare m\u0103sur\u0103 independente de tura\u021bia mecanic\u0103, o for\u021b\u0103 asincron\u0103.<\/li>\n<\/ul>\n<h2>3. R\u0103spunsul la for\u021bare: cum se comport\u0103 sistemul<\/h2>\n<p>Aceea\u0219i for\u021b\u0103 genereaz\u0103 amplitudini extrem de diferite, \u00een func\u021bie de pozi\u021bia frecven\u021bei de excita\u021bie \u00een raport cu frecven\u021ba natural\u0103 a sistemului. Exist\u0103 trei regimuri care descriu acest fenomen.<\/p>\n<h3>Sub frecven\u021ba natural\u0103 (controlat prin rigiditate)<\/h3>\n<ul>\n<li>Amplitudinea \u2248 For\u021ba \u00f7 <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/stiffness\/\">Rigiditate<\/a>.<\/li>\n<li>R\u0103spunsul este \u00een faz\u0103 cu for\u021ba aplicat\u0103.<\/li>\n<li>\u00cen cazul for\u021belor dependente de vitez\u0103, amplitudinea cre\u0219te odat\u0103 cu viteza.<\/li>\n<li>Zona tipic\u0103 de func\u021bionare pentru majoritatea <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/rigid-rotor\/\">rotoare rigide<\/a>.<\/li>\n<\/ul>\n<h3>La frecven\u021ba natural\u0103 (rezonan\u021b\u0103)<\/h3>\n<ul>\n<li>Amplitudinea \u2248 For\u021ba \u00f7 (Amortizarea \u00d7 Frecven\u021ba natural\u0103).<\/li>\n<li>Amplificat de factorul Q, de obicei de 10\u201350 de ori.<\/li>\n<li>O defazare de 90\u00b0 \u0219i for\u021be mici genereaz\u0103 acum vibra\u021bii puternice.<\/li>\n<li><a href=\"https:\/\/vibromera.eu\/ro\/glossary\/damping\/\">Amortizare<\/a> este singurul factor care limiteaz\u0103 amplitudinea \u2014 importan\u021ba practic\u0103 a <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/resonance\/\">rezonan\u021b\u0103<\/a>.<\/li>\n<\/ul>\n<h3>Peste frecven\u021ba natural\u0103 (controlat\u0103 prin mas\u0103)<\/h3>\n<ul>\n<li>Amplitudinea \u2248 For\u021ba \u00f7 (Masa \u00d7 Frecven\u021ba\u00b2).<\/li>\n<li>O defazare de 180\u00b0 \u2014 vibra\u021bia se propag\u0103 \u00een sens opus direc\u021biei for\u021bei.<\/li>\n<li>Amplitudinea scade pe m\u0103sur\u0103 ce frecven\u021ba cre\u0219te.<\/li>\n<li>Zona de ac\u021biune pentru <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/flexible-rotor\/\">rotoare flexibile<\/a> care se afl\u0103 deasupra lor <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/critical-speed\/\">viteze critice<\/a>.<\/li>\n<\/ul>\n<h2>4. Vibra\u021bia for\u021bat\u0103 vs. alte tipuri<\/h2>\n<h3>Vibra\u021bii for\u021bate vs vibra\u021bii libere<\/h3>\n<ul>\n<li><strong>For\u021bat:<\/strong> For\u021bare continu\u0103, vibra\u021bie sus\u021binut\u0103, la frecven\u021ba de for\u021bare<\/li>\n<li><strong>Liber:<\/strong> un r\u0103spuns impulsional care se atenueaz\u0103 la frecven\u021ba natural\u0103.<\/li>\n<li><strong>Exemplu:<\/strong> o <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/bump-test\/\">testul cu impact<\/a> produce vibra\u021bii libere; o ma\u0219in\u0103 \u00een func\u021biune produce vibra\u021bii for\u021bate.<\/li>\n<\/ul>\n<h3>Vibra\u021bii for\u021bate vs vibra\u021bii auto-excitate<\/h3>\n<ul>\n<li><strong>For\u021bat:<\/strong> o for\u021b\u0103 extern\u0103, cu amplitudine propor\u021bional\u0103 cu acea for\u021b\u0103, stabil\u0103.<\/li>\n<li><strong>Self-excited:<\/strong> o surs\u0103 intern\u0103 de energie, a c\u0103rei amplitudine este limitat\u0103 doar de neliniaritate, instabil\u0103.<\/li>\n<li><strong>Exemple:<\/strong> dezechilibrul este de tip for\u021bat; <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/oil-whirl\/\">v\u00e2rtej de ulei<\/a> este autoexcitat.<\/li>\n<\/ul>\n<h2>5. Control \u0219i atenuare<\/h2>\n<h3>Reduce\u021bi for\u021ba (de obicei, cea mai bun\u0103 solu\u021bie)<\/h3>\n<ul>\n<li><strong>Echilibrarea:<\/strong> reduce direct for\u021ba de dezechilibru \u0219i reprezint\u0103 cea mai frecvent\u0103 m\u0103sur\u0103 corectiv\u0103.<\/li>\n<li><strong>Aliniere:<\/strong> reduce for\u021bele de dezaxare.<\/li>\n<li><strong>Defecte de repara\u021bie:<\/strong> rezolva\u021bi problemele mecanice care genereaz\u0103 for\u021bele respective.<\/li>\n<li><strong>Cel mai eficient:<\/strong> eliminarea sau reducerea la minimum a sursei de for\u021bare \u00eenc\u0103 de la origine.<\/li>\n<\/ul>\n<h3>Modifica\u021bi r\u0103spunsul sistemului sau evita\u021bi rezonan\u021ba<\/h3>\n<ul>\n<li><strong>Modificarea rigidit\u0103\u021bii sau a masei:<\/strong> Deplasarea frecven\u021belor naturale fa\u021b\u0103 de frecven\u021bele for\u021bate<\/li>\n<li><strong>Ad\u0103uga\u021bi amortizare:<\/strong> s\u0103 atenueze amplificarea rezonan\u021bei.<\/li>\n<li><strong>Izolare:<\/strong> s\u0103 reduc\u0103 transmiterea for\u021belor c\u0103tre structura de sus\u021binere.<\/li>\n<li><strong>Evita\u021bi rezonan\u021ba:<\/strong> asigura\u021bi-v\u0103 c\u0103 frecven\u021bele de exploatare nu se suprapun cu frecven\u021bele naturale, men\u021bin\u00e2nd o marj\u0103 de separare de aproximativ \u00b120\u201330%, verificat\u0103 prin analize efectuate \u00een faza de proiectare \u0219i asigurat\u0103 prin impunerea unor restric\u021bii de vitez\u0103 \u00een cazul \u00een care suprapunerea este inevitabil\u0103.<\/li>\n<\/ul>\n<h2>6. Importan\u021ba practic\u0103 \u0219i diagnosticul<\/h2>\n<p>Deoarece aproape toate vibra\u021biile utilajelor sunt de natur\u0103 for\u021bat\u0103 \u2014 dezechilibru, nealiniere, angrenarea ro\u021bilor din\u021bate \u0219i altele \u2014 acestea sunt, de asemenea, previzibile \u0219i controlabile, iar opera\u021biunile standard de \u00eentre\u021binere, precum echilibrarea \u0219i alinierea, func\u021bioneaz\u0103 tocmai pentru c\u0103 vizeaz\u0103 cauza acestor vibra\u021bii. Abordarea de diagnosticare decurge direct din aceasta: identificarea frecven\u021bei de for\u021bare din spectru, corelarea acesteia cu o surs\u0103 cunoscut\u0103 (1\u00d7, 2\u00d7, angrenarea ro\u021bilor din\u021bate, trecerea paletei), diagnosticarea sursei respective \u0219i reducerea vibra\u021biilor de for\u021bare prin m\u0103surile de \u00eentre\u021binere adecvate.<\/p>\n<p>Aici \u00ee\u0219i dovede\u0219te utilitatea echipamentul de m\u0103surare de teren. Un analizor portabil cu dou\u0103 canale, precum <a href=\"https:\/\/vibromera.eu\/ro\/produs\/balanset-1\/\">Balanset-1A<\/a> m\u0103soar\u0103 vibra\u021biile <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/amplitude\/\">amplitudine<\/a> \u0219i faza la viteza de func\u021bionare, v\u0103 permite s\u0103 analiza\u021bi spectrul pentru a distinge un v\u00e2rf de dezechilibru de 1\u00d7 de un v\u00e2rf de dezaliniere de 2\u00d7 \u0219i \u2014 dup\u0103 ce a identificat dezechilibrul ca factor dominant \u2014 \u00eel corecteaz\u0103 pe loc prin <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/echilibrarea-campului\/\">echilibrarea la fa\u021ba locului<\/a> rotorul \u00een propriile sale lag\u0103re. M\u0103surarea at\u00e2t a fazei, c\u00e2t \u0219i a amplitudinii este ceea ce deosebe\u0219te o problem\u0103 de for\u021bare de o problem\u0103 de rezonan\u021b\u0103, \u00eentruc\u00e2t cele dou\u0103 se comport\u0103 foarte diferit pe m\u0103sur\u0103 ce viteza se modific\u0103.<\/p>\n<p>Vibra\u021bia for\u021bat\u0103 este tipul fundamental de vibra\u021bie \u00een cazul ma\u0219inilor rotative, ap\u0103r\u00e2nd ori de c\u00e2te ori o for\u021b\u0103 periodic\u0103 extern\u0103 ac\u021bioneaz\u0103 asupra sistemului. \u00cen\u021belegerea principiilor sale \u2014 potrivirea frecven\u021belor, propor\u021bionalitatea amplitudinii \u0219i zonele de r\u0103spuns determinate de rigiditate, amortizare \u0219i mas\u0103 \u2014 este ceea ce permite diagnosticarea corect\u0103 a surselor de vibra\u021bii, luarea m\u0103surilor corective adecvate (reducerea for\u021bei de excita\u021bie sau modificarea r\u0103spunsului) \u0219i elaborarea strategiilor de proiectare care men\u021bin vibra\u021biile la un nivel sc\u0103zut prin reducerea for\u021bei de excita\u021bie \u0219i evitarea rezonan\u021bei.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/ro\/glossary\/\">\u2190 \u00cenapoi la indexul principal<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>\u00cenv\u0103\u021ba\u021bi despre vibra\u021bia for\u021bat\u0103, oscila\u021bia cauzat\u0103 de for\u021be periodice externe, cum ar fi dezechilibrul sau nealinierea, cu amplitudine propor\u021bional\u0103 cu for\u021barea \u0219i excita\u021bia de adaptare a frecven\u021bei.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,110],"tags":[],"class_list":["post-122","glossary","type-glossary","status-publish","hentry","category-glossary","category-vibration-diagnostics"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/glossary\/122","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":1,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/glossary\/122\/revisions"}],"predecessor-version":[{"id":101335,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/glossary\/122\/revisions\/101335"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/media?parent=122"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/categories?post=122"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/tags?post=122"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}