{"id":125,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/frame-resonance\/"},"modified":"2026-05-23T22:51:28","modified_gmt":"2026-05-23T22:51:28","slug":"frame-resonance","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/pt\/glossary\/frame-resonance\/","title":{"rendered":"O que \u00e9 resson\u00e2ncia estrutural? Vibra\u00e7\u00e3o da estrutura da m\u00e1quina"},"content":{"rendered":"<h1>Compreender a Resson\u00e2ncia da Estrutura<\/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\/pt\/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\/pt\/product\/balanset-1\/\" title=\"Equilibrador port\u00e1til e analisador de vibra\u00e7\u00f5es 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 completo de balanceador port\u00e1til e analisador de vibra\u00e7\u00f5es\" 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\/pt\/product-category\/devices\/\" rel=\"tag\">Dispositivos<\/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\/pt\/product\/balanset-1\/\" title=\"Equilibrador port\u00e1til e analisador de vibra\u00e7\u00f5es Balanset-1A\">Equilibrador port\u00e1til e analisador de vibra\u00e7\u00f5es 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> + IVA (se aplic\u00e1vel)<\/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=\"\/pt\/wp-json\/wp\/v2\/glossary\/125?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=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" 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=\"\/pt\/wp-json\/wp\/v2\/glossary\/125?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=\"Adiciona ao carrinho: \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/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\/pt\/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\/pt\/product\/vibration-sensor\/\" title=\"Sensor de vibra\u00e7\u00e3o\">\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=\"Grande plano do sensor de vibra\u00e7\u00e3o 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\/pt\/product-category\/parts\/\" rel=\"tag\">Pe\u00e7as<\/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\/pt\/product\/vibration-sensor\/\" title=\"Sensor de vibra\u00e7\u00e3o\">Sensor de vibra\u00e7\u00e3o<\/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> + IVA (se aplic\u00e1vel)<\/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=\"\/pt\/wp-json\/wp\/v2\/glossary\/125?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=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" 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=\"\/pt\/wp-json\/wp\/v2\/glossary\/125?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=\"Adiciona ao carrinho: \u201cVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u201cVibration sensor\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/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\/pt\/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\/pt\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Sensor \u00f3tico (tac\u00f3metro 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=\"Sensor \u00f3tico (tac\u00f3metro 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\/pt\/product-category\/parts\/\" rel=\"tag\">Pe\u00e7as<\/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\/pt\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Sensor \u00f3tico (tac\u00f3metro laser)\">Sensor \u00f3tico (tac\u00f3metro 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> + IVA (se aplic\u00e1vel)<\/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=\"\/pt\/wp-json\/wp\/v2\/glossary\/125?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=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" 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=\"\/pt\/wp-json\/wp\/v2\/glossary\/125?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=\"Adiciona ao carrinho: \u201cOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201cOptical Sensor (Laser Tachometer)\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/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\/pt\/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\/pt\/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 balanceamento de rotor Vibromera: estojo de transporte, condicionador de sinal multicanal, analisador port\u00e1til, base magn\u00e9tica, sensores de vibra\u00e7\u00e3o e cabos espiralados.\" 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\/pt\/product-category\/devices\/\" rel=\"tag\">Dispositivos<\/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\/pt\/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> + IVA (se aplic\u00e1vel)<\/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=\"\/pt\/wp-json\/wp\/v2\/glossary\/125?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=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" 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=\"\/pt\/wp-json\/wp\/v2\/glossary\/125?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=\"Adiciona ao carrinho: \u201cBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201cBalanset-4\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/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\/pt\/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\/pt\/product\/magnet-stand\/\" title=\"Suporte magn\u00e9tico 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=\"Base magn\u00e9tica.\" 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\/pt\/product-category\/parts\/\" rel=\"tag\">Pe\u00e7as<\/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\/pt\/product\/magnet-stand\/\" title=\"Suporte magn\u00e9tico Insize-60-kgf\">Suporte magn\u00e9tico 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> + IVA (se aplic\u00e1vel)<\/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=\"\/pt\/wp-json\/wp\/v2\/glossary\/125?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=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" 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=\"\/pt\/wp-json\/wp\/v2\/glossary\/125?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=\"Adiciona ao carrinho: \u201cMagnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"\u201cMagnetic Stand Insize-60-kgf\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/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\/pt\/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\/pt\/product\/reflective-tape\/\" title=\"Fita refletora\">\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=\"Fita refletora\" 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\/pt\/product-category\/parts\/\" rel=\"tag\">Pe\u00e7as<\/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\/pt\/product\/reflective-tape\/\" title=\"Fita refletora\">Fita refletora<\/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> + IVA (se aplic\u00e1vel)<\/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=\"\/pt\/wp-json\/wp\/v2\/glossary\/125?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=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" 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=\"\/pt\/wp-json\/wp\/v2\/glossary\/125?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=\"Adiciona ao carrinho: \u201cReflective tape\u201d\" rel=\"nofollow\" data-success_message=\"\u201cReflective tape\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/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\/pt\/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\/pt\/product\/dynamic-balancer-balanset-1a\/\" title=\"Balanceador din\u00e2mico &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=\"Conte\u00fado do kit Balanset-1A com unidade de interface, sensores, tac\u00f3metro e acess\u00f3rios\" 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\/pt\/product-category\/devices\/\" rel=\"tag\">Dispositivos<\/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\/pt\/product\/dynamic-balancer-balanset-1a\/\" title=\"Balanceador din\u00e2mico &quot;Balanset-1A&quot; OEM\">Balanceador din\u00e2mico \"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> + IVA (se aplic\u00e1vel)<\/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=\"\/pt\/wp-json\/wp\/v2\/glossary\/125?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=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" 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=\"\/pt\/wp-json\/wp\/v2\/glossary\/125?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=\"Adiciona ao carrinho: \u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"\u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/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>Resson\u00e2ncia da estrutura<\/strong> \u00e9 uma forma espec\u00edfica de <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/structural-resonance\/\">resson\u00e2ncia estrutural<\/a> em que a pr\u00f3pria estrutura, caixa, carca\u00e7a ou inv\u00f3lucro de uma m\u00e1quina vibra numa das suas <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/natural-frequency\/\">frequ\u00eancias naturais<\/a> em resposta \u00e0 excita\u00e7\u00e3o proveniente dos componentes rotativos. Ao contr\u00e1rio da funda\u00e7\u00e3o ou <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/pedestal-looseness\/\">pedestal<\/a> Ao contr\u00e1rio das resson\u00e2ncias que envolvem a estrutura de suporte por baixo da m\u00e1quina, a resson\u00e2ncia da estrutura reside no pr\u00f3prio corpo da m\u00e1quina \u2014 a estrutura de ferro fundido ou de a\u00e7o fabricado que envolve os elementos rotativos. Quando uma frequ\u00eancia de excita\u00e7\u00e3o coincide com uma frequ\u00eancia natural da estrutura, <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/resonance\/\">resson\u00e2ncia<\/a> amplifica o movimento muito al\u00e9m do que a for\u00e7a motriz, por si s\u00f3, provocaria.<\/p>\n<p>A resson\u00e2ncia da estrutura \u00e9 comum em m\u00e1quinas com caixas grandes e relativamente leves \u2014 ventiladores, sopradores, bombas e motores. Normalmente manifesta-se atrav\u00e9s de ru\u00eddo excessivo, vibra\u00e7\u00e3o vis\u00edvel nas tampas ou pain\u00e9is e alta <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/vibration\/\">vibra\u00e7\u00e3o<\/a> valores de medi\u00e7\u00e3o na estrutura que est\u00e3o totalmente desproporcionados em rela\u00e7\u00e3o \u00e0 vibra\u00e7\u00e3o real do rotor. Como o sintoma parece alarmante, a resson\u00e2ncia da estrutura \u00e9 um dos problemas mais frequentemente mal diagnosticados na pr\u00e1tica: um analista v\u00ea um valor de medi\u00e7\u00e3o muito elevado e considera que um rotor est\u00e1 desequilibrado, quando na verdade est\u00e1 perfeitamente equilibrado.<\/p>\n<h2>1. Defini\u00e7\u00e3o: O que \u00e9 a resson\u00e2ncia da estrutura?<\/h2>\n<p>Todas as estruturas t\u00eam um conjunto de frequ\u00eancias naturais e formas modais associadas nas quais tendem a flexionar. A estrutura de uma m\u00e1quina n\u00e3o \u00e9 exce\u00e7\u00e3o. As suas paredes, extremidades, p\u00e9s e pain\u00e9is apresentam, cada um, modos de flex\u00e3o e tor\u00e7\u00e3o, e um painel de cobertura fino pode ter v\u00e1rios modos pr\u00f3prios dentro da gama aud\u00edvel. Desde que essas frequ\u00eancias n\u00e3o coincidam com as frequ\u00eancias de excita\u00e7\u00e3o da m\u00e1quina, a estrutura transmite simplesmente a for\u00e7a de forma silenciosa. Os problemas come\u00e7am quando uma frequ\u00eancia de funcionamento coincide com um modo da estrutura e esta come\u00e7a a vibrar.<\/p>\n<p>A caracter\u00edstica distintiva da resson\u00e2ncia da estrutura \u00e9 <em>amplification<\/em>: a estrutura move-se v\u00e1rias vezes mais do que os rolamentos que a rodeiam. A energia prov\u00e9m do rotor, mas a resposta \u00e9 da estrutura. \u00c9 por isso que as medi\u00e7\u00f5es efetuadas na estrutura podem apresentar valores cinco a dez vezes superiores aos das medi\u00e7\u00f5es realizadas na caixa do rolamento, a apenas alguns cent\u00edmetros de dist\u00e2ncia. A propriedade subjacente que determina onde estes modos se manifestam \u00e9 <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/stiffness\/\">rigidez<\/a> em rela\u00e7\u00e3o \u00e0 massa \u2014 ao aumentar a rigidez da estrutura, as frequ\u00eancias aumentam; ao aumentar a massa, elas diminuem.<\/p>\n<h2>2. Situa\u00e7\u00f5es comuns de resson\u00e2ncia da estrutura<\/h2>\n<h3>Estruturas de motores e geradores<\/h3>\n<ul>\n<li><strong>Frequ\u00eancias naturais:<\/strong> normalmente entre 50 e 400 Hz, dependendo do tamanho e da constru\u00e7\u00e3o.<\/li>\n<li><strong>Excita\u00e7\u00e3o:<\/strong> 1\u00d7 (<a href=\"https:\/\/vibromera.eu\/pt\/glossary\/unbalance\/\">desequil\u00edbrio<\/a>), o dobro da frequ\u00eancia da rede (120 Hz numa alimenta\u00e7\u00e3o de 60 Hz, 100 Hz numa de 50 Hz) e as for\u00e7as eletromagn\u00e9ticas associadas \u00e0 <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/electrical-frequency\/\">frequ\u00eancia el\u00e9trica<\/a>.<\/li>\n<li><strong>Sintomas:<\/strong> vibra\u00e7\u00e3o da estrutura muito superior \u00e0 vibra\u00e7\u00e3o dos rolamentos; um zumbido ou ru\u00eddo aud\u00edvel.<\/li>\n<li><strong>Severidade:<\/strong> a estrutura pode apresentar valores 5 a 10 vezes superiores aos dos rolamentos.<\/li>\n<\/ul>\n<h3>Caixas de ventiladores e sopradores<\/h3>\n<ul>\n<li><strong>Frequ\u00eancias naturais:<\/strong> 20\u2013200 Hz para ventiladores industriais t\u00edpicos.<\/li>\n<li><strong>Excita\u00e7\u00e3o:<\/strong> <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/blade-passing-frequency\/\">frequ\u00eancia de passagem da p\u00e1<\/a> (n\u00famero de p\u00e1s \u00d7 RPM).<\/li>\n<li><strong>Sintomas:<\/strong> Pain\u00e9is da estrutura vibrando violentamente; ru\u00eddo aerodin\u00e2mico intenso<\/li>\n<li><strong>Caracter\u00edstica:<\/strong> podem ocorrer apenas a determinadas velocidades ou em determinadas condi\u00e7\u00f5es de fluxo.<\/li>\n<\/ul>\n<h3>Pump casings<\/h3>\n<ul>\n<li><strong>Frequ\u00eancias naturais:<\/strong> 30\u2013300 Hz, dependendo do modelo da caixa.<\/li>\n<li><strong>Excita\u00e7\u00e3o:<\/strong> <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/vane-passing-frequency\/\">frequ\u00eancia de passagem da palheta<\/a> e pulsa\u00e7\u00f5es hidr\u00e1ulicas.<\/li>\n<li><strong>Sintomas:<\/strong> vibra\u00e7\u00e3o da carca\u00e7a, ru\u00eddo e risco de fissuras por fadiga.<\/li>\n<li><strong>Acoplamento hidr\u00e1ulico:<\/strong> Um inv\u00f3lucro cheio de fluido pode acoplar as vibra\u00e7\u00f5es do rotor e do inv\u00f3lucro, complicando a situa\u00e7\u00e3o.<\/li>\n<\/ul>\n<h3>Caixas de engrenagens<\/h3>\n<ul>\n<li>Excited by <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/gear-mesh-frequency\/\">frequ\u00eancia de engrenamento<\/a>.<\/li>\n<li>As frequ\u00eancias naturais da estrutura sobrep\u00f5em-se frequentemente \u00e0 frequ\u00eancia de engrenamento e \u00e0s suas harm\u00f3nicas.<\/li>\n<li>Produz um ru\u00eddo agudo caracter\u00edstico das engrenagens quando entra em resson\u00e2ncia.<\/li>\n<\/ul>\n<h2>3. Padr\u00e3o de vibra\u00e7\u00e3o e dete\u00e7\u00e3o<\/h2>\n<h3>Sintomas caracter\u00edsticos<\/h3>\n<ul>\n<li><strong>Depende da localiza\u00e7\u00e3o:<\/strong> A vibra\u00e7\u00e3o varia drasticamente ao longo da superf\u00edcie da estrutura \u2014 s\u00e3o comuns diferen\u00e7as de 10 vezes entre pontos.<\/li>\n<li><strong>Rolamento vs. estrutura:<\/strong> A vibra\u00e7\u00e3o da estrutura excede em muito a vibra\u00e7\u00e3o dos rolamentos (muitas vezes entre 3 e 10 vezes).<\/li>\n<li><strong>Espec\u00edfico para cada frequ\u00eancia:<\/strong> O problema surge apenas na frequ\u00eancia de resson\u00e2ncia; as outras frequ\u00eancias parecem normais.<\/li>\n<li><strong>Sens\u00edvel \u00e0 velocidade:<\/strong> grave dentro de uma faixa estreita (\u00b110\u201320 % da velocidade de resson\u00e2ncia).<\/li>\n<li><strong>Visual motion:<\/strong> O movimento da estrutura \u00e9 frequentemente vis\u00edvel a olho nu.<\/li>\n<\/ul>\n<h3>Teste de impacto (colis\u00e3o)<\/h3>\n<p>O teste definitivo. Bata na estrutura com um martelo de borracha ou um martelo com sensores e me\u00e7a a resposta com um <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/accelerometer\/\">aceler\u00f3metro<\/a>, e determine as frequ\u00eancias naturais da estrutura a partir dos picos na resposta em frequ\u00eancia. A compara\u00e7\u00e3o desses picos com as frequ\u00eancias de funcionamento (1\u00d7, 2\u00d7, passagem das p\u00e1s, etc.) revela imediatamente qualquer coincid\u00eancia perigosa. Ver <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/bump-test\/\">teste de impacto<\/a> e <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/impact-testing\/\">ensaio de impacto<\/a> para consultar o procedimento completo.<\/p>\n<h3>Inqu\u00e9rito com aceler\u00f3metro m\u00f3vel<\/h3>\n<p>Com a m\u00e1quina em funcionamento, me\u00e7a a vibra\u00e7\u00e3o em v\u00e1rios pontos ao longo da estrutura e elabore um mapa de vibra\u00e7\u00e3o indicando as \u00e1reas de alta e baixa vibra\u00e7\u00e3o. O padr\u00e3o revela a forma modal \u2014 flex\u00e3o, tor\u00e7\u00e3o ou flex\u00e3o dos pain\u00e9is \u2014 e localiza os antinodos (movimento m\u00e1ximo) e os nodos (movimento m\u00ednimo). Um completo <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/ods-analysis\/\">an\u00e1lise da forma de deflex\u00e3o operacional (ODS)<\/a> anima este movimento, e a an\u00e1lise modal formal <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/modal-analysis\/\">an\u00e1lise modal<\/a> extrai os modos subjacentes.<\/p>\n<h3>Medi\u00e7\u00e3o da fun\u00e7\u00e3o de transfer\u00eancia<\/h3>\n<p>Me\u00e7a o <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/coherence\/\">coer\u00eancia<\/a> entre a vibra\u00e7\u00e3o do rolamento (a entrada) e a vibra\u00e7\u00e3o da estrutura (a sa\u00edda). Uma elevada coer\u00eancia numa frequ\u00eancia espec\u00edfica confirma que o movimento da estrutura \u00e9 impulsionado pela for\u00e7a exercida pelo rotor e entra em resson\u00e2ncia com esta. O <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/transfer-function\/\">fun\u00e7\u00e3o de transfer\u00eancia<\/a> ela pr\u00f3pria quantifica o fator de amplifica\u00e7\u00e3o.<\/p>\n<h2>4. Confirmar a resson\u00e2ncia no terreno<\/h2>\n<p>Antes de refor\u00e7ar qualquer estrutura ou de intervir em qualquer rotor, \u00e9 necess\u00e1rio confirmar o diagn\u00f3stico \u2014 o que implica medir o comportamento real do rotor separadamente do da estrutura. Um analisador port\u00e1til de dois canais, como o <a href=\"https:\/\/vibromera.eu\/pt\/produto\/balanset-1\/\">Balanset-1A<\/a> simplifica isto: um analista pode registar <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/phase\/\">amplitude e fase<\/a> e o espetro completo na caixa do rolamento; em seguida, desloque o sensor para o painel suspeito e observe o n\u00edvel subir na frequ\u00eancia de resson\u00e2ncia enquanto a fase varia ao longo do modo estrutural. Se a vibra\u00e7\u00e3o 1\u00d7 do rotor for modesta no rolamento, mas enorme na estrutura, o veredicto \u00e9 resson\u00e2ncia, e n\u00e3o desequil\u00edbrio. O mesmo instrumento permite-lhe fazer um equil\u00edbrio de teste do rotor para descartar ou confirmar o desequil\u00edbrio, e executar uma desacelera\u00e7\u00e3o (coast-down) para que o pico de resson\u00e2ncia apare\u00e7a \u00e0 medida que a velocidade o atravessa.<\/p>\n<h2>5. Solu\u00e7\u00f5es e medidas de mitiga\u00e7\u00e3o<\/h2>\n<h3>Altera\u00e7\u00f5es de refor\u00e7o<\/h3>\n<ul>\n<li><strong>Adicionar nervuras estruturais ou refor\u00e7os:<\/strong> aumenta a rigidez \u00e0 flex\u00e3o, eleva a frequ\u00eancia natural para acima da gama de excita\u00e7\u00e3o, \u00e9 econ\u00f3mica e pode ser adaptada a equipamentos j\u00e1 existentes.<\/li>\n<li><strong>Aumentar a espessura do material:<\/strong> O aumento significativo da espessura das paredes ou dos pain\u00e9is da estrutura aumenta consideravelmente a rigidez e a frequ\u00eancia, embora possa exigir novas pe\u00e7as fundidas ou de fabrico.<\/li>\n<li><strong>Liga\u00e7\u00f5es estruturais e contraventamentos:<\/strong> A liga\u00e7\u00e3o entre os lados opostos da estrutura evita a flex\u00e3o; o contraventamento cruzado confere rigidez \u00e0 tor\u00e7\u00e3o e pode, muitas vezes, ser instalado externamente.<\/li>\n<\/ul>\n<h3>Mass addition<\/h3>\n<ul>\n<li><strong>Reduzir a frequ\u00eancia natural:<\/strong> adicionar massa para reduzir a frequ\u00eancia para um valor inferior ao intervalo de excita\u00e7\u00e3o.<\/li>\n<li><strong>Localiza\u00e7\u00e3o estrat\u00e9gica:<\/strong> Adicione massa nos pontos de antin\u00f3 para obter o m\u00e1ximo efeito.<\/li>\n<li><strong>Tuned mass:<\/strong> uma massa cuidadosamente calculada desloca um modo problem\u00e1tico espec\u00edfico.<\/li>\n<li><strong>Compromisso:<\/strong> O peso adicional n\u00e3o \u00e9 desej\u00e1vel em todas as aplica\u00e7\u00f5es.<\/li>\n<\/ul>\n<p>Quer opte por aumentar ou diminuir a frequ\u00eancia, um c\u00e1lculo r\u00e1pido permite-lhe evitar a pr\u00f3xima banda de resson\u00e2ncia. A <a href=\"https:\/\/vibromera.eu\/pt\/calculators\/foundation-natural-frequency\/\">calculadora da frequ\u00eancia natural de funda\u00e7\u00f5es<\/a> e um <a href=\"https:\/\/vibromera.eu\/pt\/calculators\/damping-ratio-calculator\/\">calculadora do r\u00e1cio de amortecimento<\/a> ajud\u00e1-lo a estimar onde uma estrutura modificada ficar\u00e1 antes de se cortar qualquer pe\u00e7a de metal.<\/p>\n<h3>Tratamentos de amortecimento<\/h3>\n<ul>\n<li><strong>Amortecimento por camada restrita:<\/strong> uma camada viscoel\u00e1stica inserida entre camadas met\u00e1licas, aplicada em pain\u00e9is planos de grandes dimens\u00f5es e tampas. Reduz o pico de resson\u00e2ncia em 50\u201380 % e funciona bem na faixa de frequ\u00eancias entre aproximadamente 20 e 500 Hz.<\/li>\n<li><strong>Amortecimento da camada livre:<\/strong> material amortecedor colado diretamente \u00e0 superf\u00edcie vibrat\u00f3ria \u2014 mais simples do que a t\u00e9cnica de camada restringida, mas menos eficaz; \u00fatil em situa\u00e7\u00f5es em que o acesso \u00e9 limitado.<\/li>\n<\/ul>\n<h3>Altera\u00e7\u00f5es operacionais<\/h3>\n<ul>\n<li><strong>Altera\u00e7\u00e3o de velocidade:<\/strong> funcionar a uma velocidade em que n\u00e3o ocorra resson\u00e2ncia.<\/li>\n<li><strong>Reduzir a excita\u00e7\u00e3o:<\/strong> improve <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/equilibrio-2\/\">equil\u00edbrio<\/a> e <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/misalignment\/\">alinhamento<\/a> para reduzir a amplitude de excita\u00e7\u00e3o que alimenta a resson\u00e2ncia.<\/li>\n<li><strong>Altera\u00e7\u00f5es ao processo:<\/strong> Alterar o fluxo, a press\u00e3o ou a carga para alterar as frequ\u00eancias de excita\u00e7\u00e3o.<\/li>\n<\/ul>\n<h2>6. Preven\u00e7\u00e3o na conce\u00e7\u00e3o<\/h2>\n<h3>Princ\u00edpios de conce\u00e7\u00e3o<\/h3>\n<ul>\n<li><strong>Rigidez adequada:<\/strong> conceber a estrutura de forma a que as suas frequ\u00eancias naturais se situem acima do dobro da frequ\u00eancia de excita\u00e7\u00e3o mais elevada.<\/li>\n<li><strong>Distribui\u00e7\u00e3o de massa:<\/strong> evitar concentra\u00e7\u00f5es de massa que criem modos de baixa frequ\u00eancia.<\/li>\n<li><strong>Nervuras e refor\u00e7os:<\/strong> integrar elementos de refor\u00e7o desde o in\u00edcio.<\/li>\n<li><strong>An\u00e1lise modal:<\/strong> utilizar a an\u00e1lise por elementos finitos (FEA) durante a fase de projeto para prever e otimizar as frequ\u00eancias naturais.<\/li>\n<\/ul>\n<h3>Verifica\u00e7\u00e3o do projeto<\/h3>\n<ul>\n<li>Testes de prot\u00f3tipos com an\u00e1lise de impacto.<\/li>\n<li>Medi\u00e7\u00e3o da forma de deflex\u00e3o em funcionamento nas primeiras unidades constru\u00eddas.<\/li>\n<li>Se forem detetadas resson\u00e2ncias, reveja o projeto antes da produ\u00e7\u00e3o.<\/li>\n<\/ul>\n<h2>7. Exemplo de caso<\/h2>\n<p><strong>Situa\u00e7\u00e3o:<\/strong> um motor de 75 CV que aciona um ventilador centr\u00edfugo, com ru\u00eddo e vibra\u00e7\u00e3o excessivos.<\/p>\n<ul>\n<li><strong>Sintomas:<\/strong> vibra\u00e7\u00e3o da estrutura do motor de 12 mm\/s; vibra\u00e7\u00e3o do rolamento de apenas 2,5 mm\/s.<\/li>\n<li><strong>Frequ\u00eancia:<\/strong> 120 Hz (o dobro da frequ\u00eancia da rede el\u00e9trica numa alimenta\u00e7\u00e3o de 60 Hz).<\/li>\n<li><strong>Impact test:<\/strong> revelou uma frequ\u00eancia natural da estrutura de 118 Hz \u2014 quase exatamente na frequ\u00eancia de excita\u00e7\u00e3o.<\/li>\n<li><strong>Causa raiz:<\/strong> a estrutura estava a entrar em resson\u00e2ncia \u00e0 frequ\u00eancia de excita\u00e7\u00e3o eletromagn\u00e9tica.<\/li>\n<li><strong>Solu\u00e7\u00e3o:<\/strong> Foram adicionados quatro refor\u00e7os de cantoneira, ligando os p\u00e9s do motor \u00e0s tampas das extremidades.<\/li>\n<li><strong>Resultado:<\/strong> a frequ\u00eancia natural da estrutura passou para 165 Hz e a vibra\u00e7\u00e3o diminuiu para 3,2 mm\/s \u2014 voltando confortavelmente para o intervalo aceit\u00e1vel abaixo de <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/iso-20816-3\/\">ISO 20816-3<\/a> (a norma que substitui a ISO 10816-3).<\/li>\n<li><strong>Custo:<\/strong> cerca de 200 d\u00f3lares em materiais, contra cerca de 8 000 d\u00f3lares pela substitui\u00e7\u00e3o do motor.<\/li>\n<\/ul>\n<p>A resson\u00e2ncia da estrutura \u00e9 um problema de vibra\u00e7\u00e3o comum, mas frequentemente mal diagnosticado. Reconhecer os sintomas reveladores \u2014 vibra\u00e7\u00e3o elevada da estrutura em rela\u00e7\u00e3o \u00e0 vibra\u00e7\u00e3o dos rolamentos, com frequ\u00eancias bem espec\u00edficas e fortemente dependente da localiza\u00e7\u00e3o \u2014 e aplicar as t\u00e9cnicas de diagn\u00f3stico adequadas (testes de impacto e an\u00e1lise ODS) permite encontrar solu\u00e7\u00f5es espec\u00edficas que podem reduzir drasticamente a vibra\u00e7\u00e3o a um custo muito modesto.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/pt\/glossary\/\">\u2190 Voltar ao \u00edndice principal<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Aprenda sobre resson\u00e2ncia estrutural, amplifica\u00e7\u00e3o de vibra\u00e7\u00e3o que ocorre quando estruturas, carca\u00e7as ou inv\u00f3lucros de m\u00e1quinas ressoam em frequ\u00eancias de opera\u00e7\u00e3o, causando ru\u00eddo excessivo e tens\u00e3o estrutural.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,110],"tags":[],"class_list":["post-125","glossary","type-glossary","status-publish","hentry","category-glossary","category-vibration-diagnostics"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/glossary\/125","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/glossary\/125\/revisions"}],"predecessor-version":[{"id":101384,"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/glossary\/125\/revisions\/101384"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/media?parent=125"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/categories?post=125"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/tags?post=125"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}