{"id":258,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/structural-resonance\/"},"modified":"2026-05-23T22:54:33","modified_gmt":"2026-05-23T22:54:33","slug":"structural-resonance","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/ro\/glossary\/structural-resonance\/","title":{"rendered":"Ce este rezonan\u021ba structural\u0103? Vibra\u021bia sistemului de sus\u021binere"},"content":{"rendered":"<h1>\u00cen\u021belegerea rezonan\u021bei structurale<\/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\/258?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\/258?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\/258?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\/258?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\/258?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\/258?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\/258?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\/258?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\/258?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\/258?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\/258?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\/258?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\/258?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\/258?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>Rezonan\u021b\u0103 structural\u0103<\/strong> este starea \u00een care o frecven\u021b\u0103 de for\u021bare provenit\u0103 de la ma\u0219inile rotative \u2014 1\u00d7 <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/running-speed\/\">vitez\u0103 de func\u021bionare<\/a>, 2\u00d7 from <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/misalignment\/\">nealiniere<\/a>, sau o frecven\u021b\u0103 de trecere a palelor \u2014 corespunde unei <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/natural-frequency\/\">frecven\u021b\u0103 natural\u0103<\/a> a structurii de sus\u021binere nerotative. Aceast\u0103 structur\u0103 poate fi cadrul ma\u0219inii, placa de baz\u0103, <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/bearing-pedestal\/\">piedestaluri<\/a>, funda\u021bia sau chiar conductele \u0219i platformele din apropiere. C\u00e2nd frecven\u021bele coincid, <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/resonance\/\">rezonan\u021b\u0103<\/a> amplific\u0103 vibra\u021biile structurale la niveluri cu mult superioare celor resim\u021bite de piesele rotative.<\/p>\n<p>Rezonan\u021ba structural\u0103 este periculoas\u0103 tocmai pentru c\u0103 se ascunde. Ea poate face ca o ma\u0219in\u0103rie bine echilibrat\u0103 \u0219i corect aliniat\u0103 s\u0103 par\u0103 c\u0103 are o defec\u021biune grav\u0103. Vibra\u021bia puternic\u0103 provine din structur\u0103 \u0219i nu \u00eenseamn\u0103 neap\u0103rat c\u0103 rotorul are probleme \u2014 totu\u0219i, mi\u0219carea structural\u0103 se poate transmite \u00eenapoi c\u0103tre rotor \u0219i poate provoca, \u00een timp, daune mecanice reale. Distingerea amplificatorului de surs\u0103 reprezint\u0103 \u00eentreaga provocare a diagnostic\u0103rii.<\/p>\n<h2>1. Cum se produce rezonan\u021ba structural\u0103<\/h2>\n<h3>Mecanismul de rezonan\u021b\u0103<\/h3>\n<ol>\n<li><strong>Surs\u0103 de excita\u021bie:<\/strong> ma\u0219ina genereaz\u0103 for\u021be periodice \u2014 de la <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/unbalance\/\">dezechilibru<\/a>, alinierea incorect\u0103 \u0219i a\u0219a mai departe.<\/li>\n<li><strong>Transmisia for\u021bei:<\/strong> aceste for\u021be se transmit prin rulmen\u021bi c\u0103tre structura de sus\u021binere.<\/li>\n<li><strong>Potrivire de frecven\u021b\u0103:<\/strong> frecven\u021ba de excita\u021bie coincide cu o frecven\u021b\u0103 natural\u0103 structural\u0103.<\/li>\n<li><strong>Acumularea de energie:<\/strong> structura absoarbe energia pe parcursul mai multor cicluri, \u00een loc s\u0103 o disipeze.<\/li>\n<li><strong>Amplificare:<\/strong> amplitudinea cre\u0219te, fiind limitat\u0103 doar de structur\u0103 <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/damping\/\">amortizare<\/a>.<\/li>\n<li><strong>Efectul observat:<\/strong> structura poate vibra de 5\u201350 de ori mai puternic dec\u00e2t ar produce doar for\u021ba de intrare.<\/li>\n<\/ol>\n<p>Amplitudinea acestei amplific\u0103ri este determinat\u0103 aproape \u00een totalitate de amortizare. Cu o amortizare redus\u0103, o rezonan\u021b\u0103 pronun\u021bat\u0103 poate amplifica mi\u0219carea de zeci de ori; cu o amortizare puternic\u0103, aceea\u0219i coinciden\u021b\u0103 de frecven\u021be abia se observ\u0103. De aceea, m\u0103surile de amortizare sunt un instrument at\u00e2t de eficient \u0219i de aceea un <a href=\"https:\/\/vibromera.eu\/ro\/calculators\/damping-ratio-calculator\/\">calculator al raportului de amortizare<\/a> este util pentru a estima c\u00e2t de \u201eascu\u021bit\u0103\u201d va fi o anumit\u0103 structur\u0103.<\/p>\n<h3>Intervale de frecven\u021b\u0103 tipice<\/h3>\n<ul>\n<li><strong>Moduri ale funda\u021biei:<\/strong> de obicei \u00eentre 5 \u0219i 30 Hz pentru funda\u021biile industriale obi\u0219nuite.<\/li>\n<li><strong>Moduri ale pl\u0103cii de baz\u0103:<\/strong> 20\u2013100 Hz, \u00een func\u021bie de dimensiuni \u0219i de structur\u0103.<\/li>\n<li><strong>Moduri de postament:<\/strong> 30\u2013200 Hz pentru suporturile tipice ale rulmen\u021bilor.<\/li>\n<li><strong>Moduri cadru \u0219i acoperire:<\/strong> 50\u2013500 Hz pentru panouri \u0219i capace din tabl\u0103.<\/li>\n<\/ul>\n<p>Atunci c\u00e2nd elementul rezonant este corpul propriu al ma\u0219inii, \u0219i nu suporturile acesteia, acela\u0219i fenomen fizic este descris ca <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/frame-resonance\/\">rezonan\u021ba cadrului<\/a>; atunci c\u00e2nd vibreaz\u0103 suportul senzorului, acesta devine <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/mounting-resonance\/\">rezonan\u021b\u0103 de montare<\/a>. Toate cele trei reprezint\u0103 fa\u021bete ale aceluia\u0219i fenomen de amplificare, observate \u00een diferite puncte ale structurii.<\/p>\n<h2>2. Scenarii tipice de rezonan\u021b\u0103<\/h2>\n<h3>1\u00d7 rezonan\u021b\u0103 la viteza de mers<\/h3>\n<ul>\n<li><strong>Exemplu:<\/strong> o ma\u0219in\u0103 care func\u021bioneaz\u0103 la 1800 rpm (30 Hz) \u0219i care are o frecven\u021b\u0103 natural\u0103 a funda\u021biei de 28\u201332 Hz.<\/li>\n<li><strong>Simptom:<\/strong> vibra\u021bii foarte puternice, \u00een ciuda echilibrului bun.<\/li>\n<li><strong>Efect:<\/strong> chiar \u0219i un dezechilibru rezidual minor produce o mi\u0219care structural\u0103 semnificativ\u0103.<\/li>\n<li><strong>Solu\u021bie:<\/strong> a schimba funda\u021bia <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/foundation-stiffness\/\">rigiditate<\/a>, s\u0103 ad\u0103uga\u021bi amortizare sau s\u0103 modifica\u021bi viteza de func\u021bionare.<\/li>\n<\/ul>\n<h3>Rezonan\u021b\u0103 dubl\u0103 (frecven\u021ba de dezaliniere)<\/h3>\n<ul>\n<li>Dezalinierea genereaz\u0103 o excita\u021bie de 2\u00d7.<\/li>\n<li>Dac\u0103 2\u00d7 corespunde modului structural, are loc amplificarea<\/li>\n<li>Vibra\u021biile puternice pot fi u\u0219or confundate cu o dezaliniere grav\u0103.<\/li>\n<li>\u00cembun\u0103t\u0103\u021birea aliniamentului ajut\u0103, dar nu elimin\u0103 rezonan\u021ba \u00een sine.<\/li>\n<\/ul>\n<h3>Rezonan\u021ba la frecven\u021ba de trecere a palelor<\/h3>\n<ul>\n<li>Ventilatoarele, pompele \u0219i turbinele genereaz\u0103 un <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/blade-passing-frequency\/\">frecven\u021ba de trecere a paletei<\/a> (N \u00d7 rpm, unde N reprezint\u0103 num\u0103rul de pale) \u2014 pentru pompe, echivalentul <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/vane-passing-frequency\/\">frecven\u021ba de trecere a paletei<\/a>.<\/li>\n<li>Adesea \u00een intervalul 50\u2013500 Hz.<\/li>\n<li>Poate excita moduri structurale \u00een acea band\u0103.<\/li>\n<li>Produce un zgomot de cl\u0103n\u021b\u0103nit sau un b\u00e2z\u00e2it de \u00eenalt\u0103 frecven\u021b\u0103.<\/li>\n<\/ul>\n<h2>3. Identificarea diagnosticului<\/h2>\n<h3>Simptomele rezonan\u021bei structurale<\/h3>\n<ul>\n<li><strong>Vibra\u021bii excesive:<\/strong> vibra\u021bii structurale mult mai intense dec\u00e2t vibra\u021biile rulmen\u021bilor.<\/li>\n<li><strong>Interval de vitez\u0103 redus:<\/strong> vibra\u021bii intense doar la o anumit\u0103 tura\u021bie (\u00b15\u201310%).<\/li>\n<li><strong>Dependen\u021ba de direc\u021bie:<\/strong> puternic\u0103 \u00eentr-o direc\u021bie, minim\u0103 \u00een unghi drept \u2014 corespunz\u00e2nd formei modale.<\/li>\n<li><strong>Dependen\u021ba de loca\u021bie:<\/strong> Vibra\u021biile variaz\u0103 considerabil de-a lungul structurii (antinoduri fa\u021b\u0103 de noduri).<\/li>\n<li><strong>Efect minim asupra rulmentului:<\/strong> rulmen\u021bii \u0219i rotorul pot fi \u00een stare perfect\u0103, \u00een timp ce structura prezint\u0103 defecte grave.<\/li>\n<\/ul>\n<h3>Test de impact (test prin lovire)<\/h3>\n<p>Testul cel mai concludent. Lovi\u021bi structura cu un ciocan \u0219i m\u0103sura\u021bi reac\u021bia pentru a identifica fiecare frecven\u021b\u0103 natural\u0103 a structurii, apoi compara\u021bi-le cu frecven\u021bele de func\u021bionare ale ma\u0219inii. Vede\u021bi <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/bump-test\/\">testul cu impact<\/a> \u0219i <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/impact-testing\/\">teste de impact<\/a> for technique.<\/p>\n<h3>Compararea loca\u021biilor de m\u0103surare<\/h3>\n<ul>\n<li>M\u0103sura\u021bi la carcasa rulmentului (cea mai apropiat\u0103 de surs\u0103).<\/li>\n<li>M\u0103sura\u021bi din nou la baza soclului, la placa de baz\u0103 \u0219i la funda\u021bie.<\/li>\n<li>Dac\u0103 vibra\u021biile structurale dep\u0103\u0219esc cu mult vibra\u021biile rulmentului, se poate vorbi de rezonan\u021b\u0103.<\/li>\n<li>O transmisibilitate mai mare de 2\u20133 indic\u0103 o amplificare rezonant\u0103 \u2014 o <a href=\"https:\/\/vibromera.eu\/ro\/calculators\/vibration-transmissibility\/\">calculator al transmisibilit\u0103\u021bii vibra\u021biilor<\/a> cuantific\u0103 raportul.<\/li>\n<\/ul>\n<h3>Forma de deformare \u00een func\u021bionare (ODS)<\/h3>\n<ul>\n<li>M\u0103sura\u021bi vibra\u021biile simultan \u00een mai multe puncte ale structurii.<\/li>\n<li>Anima\u021bi mi\u0219carea structural\u0103 pentru a vedea care mod este activ.<\/li>\n<li>Identifica\u021bi nodurile \u0219i antinodurile \u2014 a se vedea <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/ods-analysis\/\">Analiza ODS<\/a> \u0219i, pentru modurile de baz\u0103, <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/modal-analysis\/\">analiz\u0103 modal\u0103<\/a>.<\/li>\n<\/ul>\n<h2>4. Separarea sursei de structur\u0103 \u00een teren<\/h2>\n<p>Cheia practic\u0103 pentru diagnosticarea rezonan\u021bei const\u0103 \u00een m\u0103surarea comportamentului rotorului independent de structura care \u00eel \u00eenconjoar\u0103 \u2014 iar un analizor portabil cu dou\u0103 canale face acest lucru posibil f\u0103r\u0103 a fi nevoie de laboratoare de instrumentare sau de perioade de oprire. Cu ajutorul <a href=\"https:\/\/vibromera.eu\/ro\/produs\/balanset-1\/\">Balanset-1A<\/a>, un analist surprinde 1\u00d7 <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/phase\/\">amplitudine \u0219i faz\u0103<\/a> \u0219i \u00eentregul spectru la nivelul rulmentului, apoi deplaseaz\u0103 accelerometrul peste placa de baz\u0103, soclu \u0219i cadru, compar\u00e2nd nivelurile punct cu punct. O vibra\u021bie modest\u0103 a rotorului, combinat\u0103 cu o valoare structural\u0103 extrem de mare \u0219i bine definit\u0103, constituie semnul inconfundabil al rezonan\u021bei. Efectuarea unei deceler\u0103ri cu acela\u0219i instrument permite v\u00e2rfului de rezonan\u021b\u0103 s\u0103 se reveleze pe m\u0103sur\u0103 ce viteza \u00eel traverseaz\u0103, iar o echilibrare de prob\u0103 stabile\u0219te dac\u0103 dezechilibrul rezidual este \u00eentr-adev\u0103r for\u021ba de excita\u021bie sau doar un spectator nevinovat care este amplificat.<\/p>\n<h2>5. Solu\u021bii \u0219i m\u0103suri de atenuare<\/h2>\n<h3>Separarea frecven\u021belor<\/h3>\n<p><strong>Modifica\u021bi viteza de func\u021bionare.<\/strong> \u00cen cazul echipamentelor cu vitez\u0103 variabil\u0103, este suficient s\u0103 evita\u021bi rezonan\u021ba \u2014 modifica\u021bi dimensiunile ro\u021bilor de transmisie ale motorului sau utiliza\u021bi un convertizor de frecven\u021b\u0103 pentru a selecta o vitez\u0103 care nu produce rezonan\u021b\u0103. Acest lucru nu este \u00eentotdeauna posibil atunci c\u00e2nd viteza este determinat\u0103 de proces.<\/p>\n<p><strong>Modifica\u021bi frecven\u021ba natural\u0103 structural\u0103.<\/strong><\/p>\n<ul>\n<li><strong>Ad\u0103uga\u021bi masa:<\/strong> scade frecven\u021ba natural\u0103 (f \u221d 1\/\u221am).<\/li>\n<li><strong>Add stiffness:<\/strong> cre\u0219te frecven\u021ba natural\u0103 (f \u221d \u221ak).<\/li>\n<li><strong>\u00cendep\u0103rta\u021bi materialul:<\/strong> \u00een unele cazuri, pierderea de mas\u0103 modific\u0103 rezonan\u021ba \u00eentr-un mod benefic.<\/li>\n<li><strong>Modificare structural\u0103:<\/strong> ad\u0103uga\u021bi contrafi\u0219e, pl\u0103ci de \u00eent\u0103rire sau elemente de consolidare.<\/li>\n<\/ul>\n<p>\u00cen orice caz, un <a href=\"https:\/\/vibromera.eu\/ro\/calculators\/foundation-natural-frequency\/\">calculator al frecven\u021bei naturale a funda\u021biei<\/a> ajut\u0103 la previzionarea pozi\u021biei pe care o va ocupa structura modificat\u0103 \u00een raport cu frecven\u021ba de excita\u021bie, astfel \u00eenc\u00e2t o solu\u021bie nu face dec\u00e2t s\u0103 transfere problema \u00eentr-o alt\u0103 band\u0103.<\/p>\n<h3>Ad\u0103ugarea unui agent de amortizare<\/h3>\n<ul>\n<li><strong>Amortizarea cu strat constr\u00e2ns:<\/strong> material viscoelastic fixat pe structur\u0103, extrem de eficient pentru panouri din tabl\u0103 \u0219i cadre, reduc\u00e2nd v\u00e2rful de rezonan\u021b\u0103.<\/li>\n<li><strong>Amortizoare cu mas\u0103 reglat\u0103:<\/strong> un sistem secundar mas\u0103-arc reglat pe frecven\u021ba problem\u0103, care absoarbe energia \u0219i reduce mi\u0219carea structurii principale \u2014 eficient, dar care necesit\u0103 o proiectare atent\u0103.<\/li>\n<li><strong>Materiale de amortizare structural\u0103:<\/strong> tampoane de cauciuc sau izolatoare amplasate \u00een puncte strategice, compu\u0219i de amortizare pe suprafe\u021be \u0219i amortizoare de frecare la \u00eembin\u0103ri. \u00cen cazul sistemelor de rotoare de mare vitez\u0103, un <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/squeeze-film-damper\/\">amortizor cu pelicula de presare<\/a> \u00eendepline\u0219te o func\u021bie similar\u0103 la nivelul rulmentului.<\/li>\n<\/ul>\n<h3>Izolare<\/h3>\n<ul>\n<li>Instala\u021bi amortizoare de vibra\u021bii \u00eentre ma\u0219in\u0103 \u0219i funda\u021bie pentru a le decupla.<\/li>\n<li>Este eficient atunci c\u00e2nd frecven\u021ba natural\u0103 a izolatorului este mai mic\u0103 de aproximativ 0,5 ori frecven\u021ba de excita\u021bie.<\/li>\n<li>Necesit\u0103 o proiectare atent\u0103 pentru a evita apari\u021bia unei noi rezonan\u021be la frecven\u021be joase \u2014 o <a href=\"https:\/\/vibromera.eu\/ro\/calculators\/machine-vibration-isolation\/\">calculator pentru izolarea \u00eempotriva vibra\u021biilor ma\u0219inilor<\/a> \u0219i o <a href=\"https:\/\/vibromera.eu\/ro\/calculators\/vibration-mount-selection\/\">calculator pentru alegerea suporturilor antivibra\u021bii<\/a> ajut\u0103 la dimensionarea corect\u0103 a suporturilor.<\/li>\n<\/ul>\n<h3>Reducerea excita\u021biei<\/h3>\n<ul>\n<li>\u00cembun\u0103t\u0103\u0163i <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/echilibrare\/\">calitatea echilibrului<\/a> pentru a \u00eentrerupe excita\u021bia 1\u00d7.<\/li>\n<li>Folosi\u021bi alinierea de precizie pentru a reduce excita\u021bia de 2\u00d7.<\/li>\n<li>Remedia\u021bi problemele mecanice care determin\u0103 cre\u0219terea amplitudinii for\u021bei.<\/li>\n<li>Acest lucru amelioreaz\u0103 simptomele, dar nu elimin\u0103 poten\u021bialul de rezonan\u021b\u0103 care st\u0103 la baza lor.<\/li>\n<\/ul>\n<h2>6. Prevenirea \u00eenc\u0103 din faza de proiectare<\/h2>\n<h3>Criterii de proiectare a funda\u021biilor<\/h3>\n<ul>\n<li>Se recomand\u0103 ca frecven\u021ba natural\u0103 a funda\u021biei s\u0103 fie de cel pu\u021bin dou\u0103 ori mai mare dec\u00e2t frecven\u021ba maxim\u0103 de func\u021bionare (pentru a evita rezonan\u021ba de sus).<\/li>\n<li>Sau sub 0,5 ori frecven\u021ba minim\u0103 de func\u021bionare (o funda\u021bie izolat\u0103).<\/li>\n<li>Evita\u021bi banda de frecven\u021b\u0103 0,5\u20132,0\u00d7, unde este probabil s\u0103 apar\u0103 rezonan\u021b\u0103.<\/li>\n<li>Include\u021bi analiza dinamic\u0103 \u00eenc\u0103 din faza de proiectare, la fel ca \u00een cazul unui rotor <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/critical-speed\/\">viteze critice<\/a> sunt verificate \u00een raport cu domeniul s\u0103u de func\u021bionare.<\/li>\n<\/ul>\n<h3>Proiectare structural\u0103<\/h3>\n<ul>\n<li>Proiecta\u021bi pentru a asigura un nivel adecvat <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/stiffness\/\">rigiditate<\/a> \u00een raport cu frecven\u021bele de for\u021bare.<\/li>\n<li>Evita\u021bi structurile cu sarcin\u0103 redus\u0103, care sunt predispuse la rezonan\u021b\u0103.<\/li>\n<li>Folosi\u021bi nervuri \u0219i inser\u021bii pentru a cre\u0219te frecven\u021ba.<\/li>\n<li>Include\u021bi un sistem de amortizare integrat \u2014 materiale compozite sau \u00eembin\u0103ri concepute pentru a disipa energia prin frecare.<\/li>\n<\/ul>\n<p>Rezonan\u021ba structural\u0103 transform\u0103 sursele minore de vibra\u021bii \u00een probleme majore prin simpla amplificare a acestora. Identificarea rezonan\u021belor prin teste de impact \u0219i m\u0103sur\u0103tori opera\u021bionale, urmat\u0103 de aplicarea m\u0103surilor adecvate de atenuare \u2014 separarea frecven\u021belor, amortizarea, izolarea sau reducerea excita\u021biei \u2014 este esen\u021bial\u0103 pentru ob\u021binerea unor niveluri acceptabile de vibra\u021bii \u00een orice instala\u021bie \u00een care dinamica structural\u0103 influen\u021beaz\u0103 \u00een mod semnificativ comportamentul general al ma\u0219inii.<\/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 rezonan\u021ba structural\u0103, amplificarea vibra\u021biilor atunci c\u00e2nd frecven\u021bele de func\u021bionare ale ma\u0219inilor coincid cu frecven\u021bele naturale ale structurilor de sus\u021binere, funda\u021biilor sau cadrelor.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,110],"tags":[],"class_list":["post-258","glossary","type-glossary","status-publish","hentry","category-glossary","category-vibration-diagnostics"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/glossary\/258","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\/258\/revisions"}],"predecessor-version":[{"id":101414,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/glossary\/258\/revisions\/101414"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/media?parent=258"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/categories?post=258"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/tags?post=258"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}