{"id":235,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/shaft-whip\/"},"modified":"2026-07-03T10:10:47","modified_gmt":"2026-07-03T10:10:47","slug":"shaft-whip","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/pt\/glossary\/shaft-whip\/","title":{"rendered":"O que \u00e9 o efeito chicote do eixo? Instabilidade severa do rotor explicada."},"content":{"rendered":"<h1>Entendendo o efeito chicote no eixo de m\u00e1quinas rotativas<\/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\/235?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\/235?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\/235?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\/235?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\/235?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\/235?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\/235?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\/235?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\/235?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\/235?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\/235?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\/235?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\/235?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\/235?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>Chicote de eixo<\/strong> - conhecido como <em>chicote de \u00f3leo<\/em> quando tem origem em rolamentos hidrodin\u00e2micos \u2014 \u00e9 uma forma grave de <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/rotor-instability\/\">instabilidade do rotor<\/a> caracterizado por violento <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/self-excited-vibration\/\">vibra\u00e7\u00e3o autoexcitada<\/a>. Ocorre quando um rotor que funciona com rolamentos de pel\u00edcula de fluido excede uma velocidade limite cr\u00edtica, normalmente cerca do dobro da primeira <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/critical-speed\/\">velocidade cr\u00edtica<\/a>. Assim que o chicote entra em a\u00e7\u00e3o, a frequ\u00eancia de vibra\u00e7\u00e3o &#8220;sincroniza-se&#8221; com a primeira do rotor <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/natural-frequency\/\">frequ\u00eancia natural<\/a> e mant\u00e9m-se assim independentemente de qualquer aumento adicional da velocidade, sendo a amplitude limitada apenas pela folga do rolamento \u2014 ou por uma falha catastr\u00f3fica. Trata-se de uma das condi\u00e7\u00f5es mais perigosas em m\u00e1quinas de alta velocidade, uma vez que se desenvolve repentinamente, atinge n\u00edveis destrutivos em poucos segundos e n\u00e3o pode ser resolvida por <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/equilibrio-2\/\">equilibragem<\/a> ou qualquer outra corre\u00e7\u00e3o convencional. Exige a paragem imediata, seguida de altera\u00e7\u00f5es no sistema de rolamentos para evitar a recorr\u00eancia.<\/p>\n<h2>1. A progress\u00e3o: do turbilh\u00e3o de \u00f3leo ao chicote do eixo<\/h2>\n<p>O chicote raramente ocorre sem aviso pr\u00e9vio \u2014 \u00e9 o ponto culminante de uma progress\u00e3o em quatro fases que um analista atento pode antecipar muito antes da fase destrutiva.<\/p>\n<h3>Fase 1 \u2014 Funcionamento est\u00e1vel<\/h3>\n<ul>\n<li>O rotor funciona abaixo do limiar de instabilidade.<\/li>\n<li>Apenas normal <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/forced-vibration\/\">vibra\u00e7\u00e3o for\u00e7ada<\/a> de <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/unbalance\/\">desequil\u00edbrio<\/a> est\u00e1 presente.<\/li>\n<li>A pel\u00edcula de \u00f3leo do rolamento proporciona um apoio est\u00e1vel e bem amortecido.<\/li>\n<\/ul>\n<h3>Fase 2 \u2014 In\u00edcio do redemoinho de \u00f3leo<\/h3>\n<p>\u00c0 medida que a velocidade ultrapassa cerca de duas vezes a primeira velocidade cr\u00edtica, <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/oil-whirl\/\">redemoinho de \u00f3leo<\/a> come\u00e7a:<\/p>\n<ul>\n<li>A <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/sub-synchronous\/\">subs\u00edncrono<\/a> A vibra\u00e7\u00e3o surge a cerca de 0,43\u20130,48 vezes a velocidade do eixo.<\/li>\n<li>A amplitude \u00e9 inicialmente moderada e depende da velocidade.<\/li>\n<li>A frequ\u00eancia de rota\u00e7\u00e3o aumenta proporcionalmente \u00e0 velocidade do eixo.<\/li>\n<li>Pode ser intermitente ou cont\u00ednuo.<\/li>\n<li>Pode coexistir com a vibra\u00e7\u00e3o normal de 1\u00d7 causada pelo desequil\u00edbrio.<\/li>\n<\/ul>\n<h3>Fase 3 \u2014 A transi\u00e7\u00e3o do chicote<\/h3>\n<p>Quando a frequ\u00eancia do redemoinho ascendente de \u00f3leo aumenta o suficiente para igualar a primeira frequ\u00eancia natural, o comportamento muda abruptamente:<\/p>\n<ul>\n<li><strong>Sincroniza\u00e7\u00e3o de frequ\u00eancia:<\/strong> a frequ\u00eancia de vibra\u00e7\u00e3o deixa de acompanhar a velocidade e fixa-se na frequ\u00eancia natural.<\/li>\n<li><strong>Amplifica\u00e7\u00e3o ressonante:<\/strong> a amplitude aumenta drasticamente porque o sistema encontra-se agora em <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/resonance\/\">resson\u00e2ncia<\/a>.<\/li>\n<li><strong>In\u00edcio s\u00fabito:<\/strong> A transi\u00e7\u00e3o do giro para o chicote pode ser praticamente instant\u00e2nea.<\/li>\n<li><strong>Independ\u00eancia da velocidade:<\/strong> Aumentos adicionais da velocidade j\u00e1 n\u00e3o alteram a frequ\u00eancia \u2014 apenas a amplitude.<\/li>\n<\/ul>\n<h3>Fase 4 \u2014 Chicoteamento do eixo (Situa\u00e7\u00e3o cr\u00edtica)<\/h3>\n<ul>\n<li>A vibra\u00e7\u00e3o ocorre a uma frequ\u00eancia constante \u2014 a primeira frequ\u00eancia natural, normalmente entre 40 e 60 Hz.<\/li>\n<li>A amplitude atinge 5 a 20 vezes a vibra\u00e7\u00e3o de desequil\u00edbrio normal.<\/li>\n<li>O eixo pode atingir os limites de folga do rolamento.<\/li>\n<li>Os rolamentos e o \u00f3leo aquecem rapidamente.<\/li>\n<li>Se a m\u00e1quina n\u00e3o for parada, pode ocorrer uma falha catastr\u00f3fica em poucos minutos.<\/li>\n<\/ul>\n<h2>2. O mecanismo f\u00edsico<\/h2>\n<p>O chicoteamento \u00e9 provocado pela din\u00e2mica dos fluidos da pr\u00f3pria pel\u00edcula de \u00f3leo do rolamento, raz\u00e3o pela qual n\u00e3o pode ser eliminado atrav\u00e9s do equil\u00edbrio \u2014 a energia desestabilizadora prov\u00e9m do lubrificante, e n\u00e3o de um ponto pesado. A sequ\u00eancia \u00e9 a seguinte:<\/p>\n<ol>\n<li><strong>Forma\u00e7\u00e3o da cunha de \u00f3leo:<\/strong> O eixo rotativo arrasta o lubrificante ao redor do rolamento, criando uma cunha pressurizada.<\/li>\n<li><strong>For\u00e7a tangencial:<\/strong> essa cunha exerce uma press\u00e3o sobre o munh\u00e3o numa dire\u00e7\u00e3o perpendicular ao desvio radial \u2014 uma for\u00e7a tangencial acoplada transversalmente.<\/li>\n<li><strong>Movimento da \u00f3rbita:<\/strong> a for\u00e7a tangencial empurra o centro do eixo para <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/whirl\/\">precess\u00e3o<\/a> num <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/orbit\/\">\u00f3rbita<\/a> a cerca de metade da velocidade do eixo.<\/li>\n<li><strong>Extra\u00e7\u00e3o de energia:<\/strong> O movimento orbital retira energia da rota\u00e7\u00e3o do eixo para se manter \u2014 a caracter\u00edstica distintiva de uma vibra\u00e7\u00e3o autoexcitada.<\/li>\n<li><strong>Bloqueio de resson\u00e2ncia:<\/strong> Quando a frequ\u00eancia orbital coincide com a frequ\u00eancia natural, a resson\u00e2ncia amplifica o movimento.<\/li>\n<li><strong>Ciclo limite:<\/strong> a amplitude aumenta at\u00e9 ser limitada pela folga do rolamento ou por uma falha.<\/li>\n<\/ol>\n<p>Uma vez que a for\u00e7a de excita\u00e7\u00e3o varia proporcionalmente ao comportamento do lubrificante, qualquer fator que aumente a rigidez da pel\u00edcula de \u00f3leo ou do sistema <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/damping\/\">amortecimento<\/a> aumenta a velocidade a que a instabilidade se inicia.<\/p>\n<h2>3. Identifica\u00e7\u00e3o diagn\u00f3stica<\/h2>\n<p>O chicoteamento do eixo deixa uma marca inconfund\u00edvel nos dados de vibra\u00e7\u00e3o, o que permite a dete\u00e7\u00e3o precoce caso se analisem os gr\u00e1ficos adequados.<\/p>\n<h3>Assinatura de Vibra\u00e7\u00e3o<\/h3>\n<ul>\n<li><strong><a href=\"https:\/\/vibromera.eu\/pt\/glossary\/spectrum\/\">Espetro<\/a>:<\/strong> um pico acentuado na frequ\u00eancia subs\u00edncrona (primeira frequ\u00eancia natural) que se mant\u00e9m est\u00e1vel independentemente das varia\u00e7\u00f5es de velocidade.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/pt\/glossary\/waterfall-plot\/\">Diagrama em cascata<\/a>:<\/strong> A componente subs\u00edncrona apresenta-se como uma linha vertical (frequ\u00eancia constante), em vez da linha diagonal de uma componente proporcional \u00e0 velocidade.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/pt\/glossary\/order-analysis\/\">An\u00e1lise de ordens<\/a>:<\/strong> uma ordem fracion\u00e1ria que <em>diminui<\/em> \u00e0 medida que a velocidade aumenta \u2014 por exemplo, passando de 0,5\u00d7 para 0,4\u00d7 e depois para 0,35\u00d7 \u2014, uma vez que a frequ\u00eancia permanece fixa enquanto a velocidade aumenta.<\/li>\n<li><strong>\u00d3rbita:<\/strong> uma \u00f3rbita circular ou el\u00edptica de grandes dimens\u00f5es \u00e0 frequ\u00eancia natural.<\/li>\n<\/ul>\n<p>A <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/bode-plot\/\">Diagrama de Bode<\/a> assumido <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/coastdown\/\">desacelera\u00e7\u00e3o<\/a> distingue ainda mais uma resson\u00e2ncia verdadeira de um efeito de chicote, uma vez que a linha subs\u00edncrona bloqueada se comporta de forma bastante diferente do pico de velocidade cr\u00edtica s\u00edncrona.<\/p>\n<h3>Velocidade de in\u00edcio<\/h3>\n<ul>\n<li><strong>Limite t\u00edpico:<\/strong> 2,0\u20132,5 vezes a primeira velocidade cr\u00edtica.<\/li>\n<li><strong>Dependente do mancal:<\/strong> o limiar exato varia consoante o modelo do mancal, <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/preload\/\">pr\u00e9-carga<\/a>, e a viscosidade do \u00f3leo.<\/li>\n<li><strong>In\u00edcio s\u00fabito:<\/strong> Um pequeno aumento de velocidade pode fazer com que o rotor passe de um estado est\u00e1vel para um estado totalmente inst\u00e1vel.<\/li>\n<\/ul>\n<h2>4. Estrat\u00e9gias de preven\u00e7\u00e3o<\/h2>\n<p>Uma vez que o efeito chicote n\u00e3o pode ser compensado, a preven\u00e7\u00e3o centra-se no <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/journal-bearing\/\">chumaceira de deslizamento<\/a> e sobre o modo de funcionamento da m\u00e1quina.<\/p>\n<h3>Modifica\u00e7\u00f5es no projeto de rolamentos<\/h3>\n<p><strong>1. Mancais de sapatas basculantes<\/strong> \u2014 a solu\u00e7\u00e3o mais eficaz. As sapatas giram de forma independente, eliminando a for\u00e7a de acoplamento cruzado desestabilizadora; s\u00e3o intrinsecamente est\u00e1veis numa ampla gama de velocidades e constituem o padr\u00e3o da ind\u00fastria para turbom\u00e1quinas de alta velocidade.<\/p>\n<p><strong>2. Mancais de barreira de press\u00e3o<\/strong> \u2014 um mancal cil\u00edndrico modificado com uma ranhura ou barreira que aumenta o amortecimento e a rigidez efetivos; mais barato do que o mancal de sapatas basculantes, mas menos eficaz.<\/p>\n<p><strong>3. Pr\u00e9-carga do mancal<\/strong> \u2014 a aplica\u00e7\u00e3o de uma pr\u00e9-carga radial (frequentemente atrav\u00e9s de um projeto com furo descentrado) aumenta a rigidez e eleva o limiar de instabilidade.<\/p>\n<p><strong>4. <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/squeeze-film-damper\/\">Amortecedores de pel\u00edcula comprimida<\/a><\/strong> \u2014 um elemento de amortecimento externo que envolve o mancal e proporciona amortecimento sem necessidade de reprojetar o pr\u00f3prio mancal, sendo ideal para adapta\u00e7\u00f5es em instala\u00e7\u00f5es existentes.<\/p>\n<h3>Medidas Operacionais<\/h3>\n<ul>\n<li><strong>Limite de velocidade:<\/strong> manter a velocidade m\u00e1xima abaixo do limiar \u2014 normalmente inferior a 1,8 vezes a primeira velocidade cr\u00edtica.<\/li>\n<li><strong>Gest\u00e3o da carga:<\/strong> sempre que poss\u00edvel, utilize cargas mais elevadas nos rolamentos, uma vez que o aumento da carga aumenta o amortecimento.<\/li>\n<li><strong>Controlo da temperatura do \u00f3leo:<\/strong> Um \u00f3leo mais frio \u00e9 mais viscoso e tem maior poder estabilizador.<\/li>\n<li><strong>Monitoriza\u00e7\u00e3o:<\/strong> cont\u00ednuo <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/vibration-monitoring\/\">monitoriza\u00e7\u00e3o de vibra\u00e7\u00e3o<\/a> com alarmes que monitorizam especificamente a banda subs\u00edncrona.<\/li>\n<\/ul>\n<h2>5. Consequ\u00eancias e danos<\/h2>\n<h3>Efeitos imediatos<\/h3>\n<ul>\n<li><strong>Vibra\u00e7\u00e3o violenta:<\/strong> as amplitudes podem atingir v\u00e1rios mil\u00edmetros (centenas de mil\u00e9simos de polegada).<\/li>\n<li><strong>Ru\u00eddo:<\/strong> um som alto e caracter\u00edstico, bastante diferente do funcionamento normal.<\/li>\n<li><strong>Aquecimento r\u00e1pido dos mancais:<\/strong> as temperaturas podem subir entre 20 e 50 \u00b0C em poucos minutos.<\/li>\n<li><strong>Degrada\u00e7\u00e3o do \u00f3leo:<\/strong> As altas temperaturas e o cisalhamento intenso degradam o lubrificante.<\/li>\n<\/ul>\n<h3>Poss\u00edveis falhas<\/h3>\n<ul>\n<li><strong>Arranhamento do mancal (bearing wipe):<\/strong> o revestimento de babbitt funde e \u00e9 arrastado.<\/li>\n<li><strong>Danos no veio:<\/strong> riscos, desgaste ou deforma\u00e7\u00f5es permanentes.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/pt\/glossary\/seal-defects\/\">Falha de veda\u00e7\u00e3o<\/a>:<\/strong> O movimento excessivo do eixo danifica as veda\u00e7\u00f5es.<\/li>\n<li><strong>Quebra do eixo:<\/strong> ciclo elevado <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/fatigue\/\">fadiga<\/a> devido \u00e0 oscila\u00e7\u00e3o violenta.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/pt\/glossary\/coupling-defects\/\">Danos no acoplamento<\/a>:<\/strong> As for\u00e7as transmitidas danificam os acoplamentos.<\/li>\n<\/ul>\n<h2>6. Fen\u00f3menos relacionados<\/h2>\n<h3>Redemoinho de \u00f3leo<\/h3>\n<p><a href=\"https:\/\/vibromera.eu\/pt\/glossary\/oil-whirl\/\">Redemoinho de \u00f3leo<\/a> \u00e9 o precursor do efeito chicote: o mesmo mecanismo, mas a frequ\u00eancia ainda n\u00e3o se sincronizou com a frequ\u00eancia natural. A sua amplitude \u00e9 menor, a frequ\u00eancia acompanha a velocidade a um r\u00e1cio de ~0,43\u20130,48\u00d7 e, em algumas aplica\u00e7\u00f5es, \u00e9 toler\u00e1vel.<\/p>\n<h3>Redemoinho de vapor<\/h3>\n<p><a href=\"https:\/\/vibromera.eu\/pt\/glossary\/steam-whirl\/\">Redemoinho de vapor<\/a> trata-se de uma instabilidade semelhante nas turbinas a vapor, provocada pelas for\u00e7as aerodin\u00e2micas nas veda\u00e7\u00f5es de labirinto, em vez de pela pel\u00edcula de \u00f3leo dos rolamentos. Apresenta a mesma vibra\u00e7\u00e3o subs\u00edncrona que se fixa numa frequ\u00eancia natural.<\/p>\n<h3>Chicote por Fric\u00e7\u00e3o a Seco<\/h3>\n<p>Esta variante surge nos locais das veda\u00e7\u00f5es ou a partir de <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/rotor-rub\/\">contacto entre o rotor e o estator<\/a>. O atrito constitui o mecanismo desestabilizador; \u00e9 menos comum do que o chicote de \u00f3leo, mas igualmente perigoso e requer uma solu\u00e7\u00e3o diferente \u2014 eliminar o contacto ou melhorar a veda\u00e7\u00e3o.<\/p>\n<h2>7. Estudo de Caso: Chicote do Eixo do Compressor<\/h2>\n<p><strong>Cen\u00e1rio:<\/strong> um compressor centr\u00edfugo de alta velocidade montado em mancais cil\u00edndricos lisos.<\/p>\n<ul>\n<li><strong>Opera\u00e7\u00e3o normal:<\/strong> 12 000 rpm com uma vibra\u00e7\u00e3o de 2,5 mm\/s.<\/li>\n<li><strong>Aumento da velocidade:<\/strong> o operador aumentou a rota\u00e7\u00e3o para 13 500 rpm para obter maior capacidade.<\/li>\n<li><strong>In\u00edcio:<\/strong> a 13 200 rpm, surgiu uma vibra\u00e7\u00e3o repentina e violenta.<\/li>\n<li><strong>Sintomas:<\/strong> 25 mm\/s a 105 Hz constantes; a temperatura do rolamento subiu de 70 \u00b0C para 95 \u00b0C em tr\u00eas minutos.<\/li>\n<li><strong>Medidas de emerg\u00eancia:<\/strong> O desligamento imediato evitou uma avaria no rolamento.<\/li>\n<li><strong>Causa raiz:<\/strong> a primeira velocidade cr\u00edtica era 6 300 rpm (105 Hz); a 13 200 rpm o rotor ultrapassou o limiar de whip de aproximadamente 2\u00d7 a cr\u00edtica \u2248 12 600 rpm, e a vibra\u00e7\u00e3o bloqueou na primeira frequ\u00eancia natural de 105 Hz.<\/li>\n<li><strong>Solu\u00e7\u00e3o:<\/strong> Os mancais lisos foram substitu\u00eddos por mancais de patins oscilantes, permitindo um funcionamento seguro at\u00e9 15 000 rpm.<\/li>\n<\/ul>\n<h2>8. Normas, pr\u00e1ticas e ferramentas de campo<\/h2>\n<ul>\n<li><strong><a href=\"https:\/\/vibromera.eu\/pt\/glossary\/api-684\/\">API 684<\/a>:<\/strong> requer uma an\u00e1lise de estabilidade rotordin\u00e2mica para turbom\u00e1quinas de alta velocidade.<\/li>\n<li><strong>API 617:<\/strong> especifica os tipos de rolamentos e os requisitos de estabilidade para compressores centr\u00edfugos.<\/li>\n<li><strong>ISO 10814:<\/strong> Fornece orienta\u00e7\u00f5es sobre a sele\u00e7\u00e3o de rolamentos para garantir estabilidade.<\/li>\n<li><strong>Pr\u00e1tica do setor:<\/strong> Os mancais de patins oscilantes s\u00e3o padr\u00e3o para equipamentos que funcionam a velocidades superiores a duas vezes a primeira velocidade cr\u00edtica.<\/li>\n<\/ul>\n<p>No terreno, a medida de seguran\u00e7a di\u00e1ria consiste em detetar o precursor antes mesmo de o rotor entrar em chicoteamento. Um analisador port\u00e1til de dois canais, como o <a href=\"https:\/\/vibromera.eu\/pt\/produto\/balanset-1\/\">Balanset-1A<\/a> permite que um engenheiro registe a amplitude, <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/phase\/\">fase<\/a> e o espetro durante um aumento de velocidade controlado e observar diretamente a banda subs\u00edncrona \u2014 se uma assinatura 1\u00d7 est\u00e1vel apresentar subitamente um pico bloqueado, independente da velocidade, pr\u00f3ximo da primeira frequ\u00eancia natural, o rotor est\u00e1 \u00e0 beira de um chicoteamento do eixo e a velocidade deve ser reduzida. O mesmo instrumento confirma posteriormente que o desequil\u00edbrio subjacente est\u00e1 dentro da toler\u00e2ncia, descartando-o como um fator de excita\u00e7\u00e3o. O chicoteamento do eixo continua a ser um modo de falha catastr\u00f3fico que \u00e9 melhor gerido atrav\u00e9s da sele\u00e7\u00e3o e conce\u00e7\u00e3o corretas dos rolamentos; reconhecer a sua assinatura sub-s\u00edncrona caracter\u00edstica e bloqueada em frequ\u00eancia \u00e9 o que permite um diagn\u00f3stico r\u00e1pido e a resposta de emerg\u00eancia decisiva que protege equipamentos de alta velocidade dispendiosos.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/pt\/glossary\/\">\u2190 Voltar ao \u00edndice principal<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Saiba mais sobre o efeito chicote no eixo, uma grave instabilidade vibrat\u00f3ria autoexcitada em mancais de pel\u00edcula fluida que ocorre em altas velocidades, causando oscila\u00e7\u00f5es violentas na frequ\u00eancia natural.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,111],"tags":[],"class_list":["post-235","glossary","type-glossary","status-publish","hentry","category-glossary","category-rotor-balancing"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/glossary\/235","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":2,"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/glossary\/235\/revisions"}],"predecessor-version":[{"id":102183,"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/glossary\/235\/revisions\/102183"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/media?parent=235"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/categories?post=235"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/tags?post=235"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}