{"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\/sv\/glossary\/frame-resonance\/","title":{"rendered":"Vad \u00e4r ramresonans? Vibrationer i maskinstrukturen"},"content":{"rendered":"<h1>F\u00f6rst\u00e5 ramresonans<\/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\/sv\/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\/sv\/product\/balanset-1\/\" title=\"Portabel balanserare &amp; vibrationsanalysator 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 komplett kit med portabel balanserare och vibrationsanalysator\" 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\/sv\/product-category\/devices\/\" rel=\"tag\">Enheter<\/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\/sv\/product\/balanset-1\/\" title=\"Portabel balanserare &amp; vibrationsanalysator Balanset-1A\">Portabel balanserare &amp; vibrationsanalysator 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> + moms (om till\u00e4mpligt)<\/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=\"\/sv\/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=\"L\u00e4gg till i varukorg\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"L\u00e4gg till i varukorg\" 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=\"\/sv\/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=\"L\u00e4gg till i varukorgen: \u201dPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Portable balancer &amp; Vibration analyzer Balanset-1A&quot; har lagts till i din varukorg\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">L\u00e4gg till i varukorg<\/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\/sv\/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\/sv\/product\/vibration-sensor\/\" title=\"Vibrationssensor\">\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=\"Balanset-1A vibrationssensor - n\u00e4rbild\" 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\/sv\/product-category\/parts\/\" rel=\"tag\">Delar<\/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\/sv\/product\/vibration-sensor\/\" title=\"Vibrationssensor\">Vibrationssensor<\/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> + moms (om till\u00e4mpligt)<\/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=\"\/sv\/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=\"L\u00e4gg till i varukorg\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"L\u00e4gg till i varukorg\" 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=\"\/sv\/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=\"L\u00e4gg till i varukorgen: \u201dVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Vibration sensor&quot; har lagts till i din varukorg\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">L\u00e4gg till i varukorg<\/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\/sv\/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\/sv\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optisk sensor (lasertakometer)\">\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=\"Optisk sensor (lasertakometer)\" 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\/sv\/product-category\/parts\/\" rel=\"tag\">Delar<\/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\/sv\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Optisk sensor (lasertakometer)\">Optisk sensor (lasertakometer)<\/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> + moms (om till\u00e4mpligt)<\/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=\"\/sv\/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=\"L\u00e4gg till i varukorg\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"L\u00e4gg till i varukorg\" 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=\"\/sv\/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=\"L\u00e4gg till i varukorgen: \u201dOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Optical Sensor (Laser Tachometer)&quot; har lagts till i din varukorg\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">L\u00e4gg till i varukorg<\/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\/sv\/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\/sv\/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=\"Vibromera rotorbalanseringssats: b\u00e4rv\u00e4ska, flerkanalig signalkonditionerare, handh\u00e5llen analysator, magnetisk bas, vibrationssensorer och spiralformade kablar.\" 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\/sv\/product-category\/devices\/\" rel=\"tag\">Enheter<\/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\/sv\/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> + moms (om till\u00e4mpligt)<\/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=\"\/sv\/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=\"L\u00e4gg till i varukorg\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"L\u00e4gg till i varukorg\" 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=\"\/sv\/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=\"L\u00e4gg till i varukorgen: \u201dBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Balanset-4&quot; har lagts till i din varukorg\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">L\u00e4gg till i varukorg<\/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\/sv\/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\/sv\/product\/magnet-stand\/\" title=\"Magnetiskt stativ 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=\"Magnetf\u00e4ste.\" 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\/sv\/product-category\/parts\/\" rel=\"tag\">Delar<\/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\/sv\/product\/magnet-stand\/\" title=\"Magnetiskt stativ Insize-60-kgf\">Magnetiskt stativ 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> + moms (om till\u00e4mpligt)<\/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=\"\/sv\/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=\"L\u00e4gg till i varukorg\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"L\u00e4gg till i varukorg\" 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=\"\/sv\/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=\"L\u00e4gg till i varukorgen: \u201dMagnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Magnetic Stand Insize-60-kgf&quot; har lagts till i din varukorg\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">L\u00e4gg till i varukorg<\/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\/sv\/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\/sv\/product\/reflective-tape\/\" title=\"Reflekterande tejp\">\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=\"Reflekterande tejp\" 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\/sv\/product-category\/parts\/\" rel=\"tag\">Delar<\/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\/sv\/product\/reflective-tape\/\" title=\"Reflekterande tejp\">Reflekterande tejp<\/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> + moms (om till\u00e4mpligt)<\/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=\"\/sv\/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=\"L\u00e4gg till i varukorg\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"L\u00e4gg till i varukorg\" 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=\"\/sv\/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=\"L\u00e4gg till i varukorgen: \u201dReflective tape\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Reflective tape&quot; har lagts till i din varukorg\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">L\u00e4gg till i varukorg<\/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\/sv\/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\/sv\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dynamisk balanserare &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=\"Balanset-1A-kit, inneh\u00e5ll med gr\u00e4nssnittsenhet, givare, varvr\u00e4knare och tillbeh\u00f6r\" 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\/sv\/product-category\/devices\/\" rel=\"tag\">Enheter<\/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\/sv\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dynamisk balanserare &quot;Balanset-1A&quot; OEM\">Dynamisk balanserare \"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> + moms (om till\u00e4mpligt)<\/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=\"\/sv\/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=\"L\u00e4gg till i varukorg\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"L\u00e4gg till i varukorg\" 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=\"\/sv\/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=\"L\u00e4gg till i varukorgen: \u201dDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"&quot;Dynamic balancer \u201cBalanset-1A\u201d OEM&quot; har lagts till i din varukorg\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">L\u00e4gg till i varukorg<\/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>Ramresonans<\/strong> \u00e4r en s\u00e4rskild form av <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/structural-resonance\/\">strukturell resonans<\/a> d\u00e4r maskinens egen ram, h\u00f6lje, kapsling eller inneslutning vibrerar vid en av sina <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/natural-frequency\/\">naturliga frekvenser<\/a> som svar p\u00e5 stimulering fr\u00e5n de roterande komponenterna. Till skillnad fr\u00e5n fundament eller <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/pedestal-looseness\/\">pedestal<\/a> resonanser, som ber\u00f6r st\u00f6dkonstruktionen under maskinen, medan ramresonansen uppst\u00e5r i sj\u00e4lva maskinhuset \u2013 den gjutj\u00e4rns- eller st\u00e5lkonstruktion som omsluter de roterande delarna. N\u00e4r en p\u00e5verkande frekvens sammanfaller med en naturlig frekvens i ramen, <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/resonance\/\">resonans<\/a> f\u00f6rst\u00e4rker r\u00f6relsen l\u00e5ngt ut\u00f6ver vad drivkraften i sig skulle orsaka.<\/p>\n<p>Ramresonans \u00e4r vanligt f\u00f6rekommande i maskiner med stora, relativt l\u00e4tta h\u00f6ljen \u2013 fl\u00e4ktar, bl\u00e5sare, pumpar och motorer. Det yttrar sig vanligtvis i form av kraftigt buller, synliga vibrationer i h\u00f6ljen eller paneler samt h\u00f6ga <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/vibration\/\">vibrationer<\/a> m\u00e4tv\u00e4rden p\u00e5 ramen som st\u00e5r i stark kontrast till rotorns faktiska vibrationer. Eftersom symptomen ser alarmerande ut \u00e4r ramresonans ett av de problem som oftast feldiagnostiseras i f\u00e4lt: en analytiker ser ett enormt m\u00e4tv\u00e4rde och f\u00f6rklarar en perfekt balanserad rotor som defekt.<\/p>\n<h2>1. Definition: Vad \u00e4r ramresonans?<\/h2>\n<p>Varje konstruktion har en upps\u00e4ttning naturliga frekvenser och tillh\u00f6rande sv\u00e4ngningsformer vid vilka den tenderar att b\u00f6jas. En maskinram \u00e4r inget undantag. Dess v\u00e4ggar, \u00e4ndsk\u00f6ldar, f\u00f6tter och paneler har var och en sina egna b\u00f6jnings- och vridningssv\u00e4ngningsformer, och en tunn t\u00e4ckpanel kan ha flera egna sv\u00e4ngningsformer inom det h\u00f6rbara frekvensomr\u00e5det. S\u00e5 l\u00e4nge dessa frekvenser inte sammanfaller med maskinens exciteringsfrekvenser \u00f6verf\u00f6r ramen helt enkelt kraften utan st\u00f6rre v\u00e4sen. Problemen b\u00f6rjar n\u00e4r en driftsfrekvens sammanfaller med en egenform i ramen och konstruktionen b\u00f6rjar sjunga med.<\/p>\n<p>Det som k\u00e4nnetecknar ramresonans \u00e4r <em>amplification<\/em>: ramen r\u00f6r sig flera g\u00e5nger mer \u00e4n de lager den omger. Energin kommer fr\u00e5n rotorn, men reaktionen h\u00e4rr\u00f6r fr\u00e5n konstruktionen. Det \u00e4r d\u00e4rf\u00f6r som m\u00e4tv\u00e4rdena p\u00e5 ramen kan vara fem till tio g\u00e5nger h\u00f6gre \u00e4n m\u00e4tv\u00e4rdena vid lagerhuset, som bara ligger n\u00e5gra centimeter bort. Den underliggande egenskapen som avg\u00f6r var dessa sv\u00e4ngningsformer uppst\u00e5r \u00e4r <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/stiffness\/\">styvhet<\/a> i f\u00f6rh\u00e5llande till massan \u2013 om man f\u00f6rst\u00e4rker ramen \u00f6kar frekvenserna; om man l\u00e4gger till massa sjunker de.<\/p>\n<h2>2. Vanliga situationer med ramresonans<\/h2>\n<h3>Motor- och generatorramar<\/h3>\n<ul>\n<li><strong>Egenfrekvenser:<\/strong> vanligtvis 50\u2013400 Hz beroende p\u00e5 storlek och konstruktion.<\/li>\n<li><strong>Upphetsning:<\/strong> 1\u00d7 (<a href=\"https:\/\/vibromera.eu\/sv\/glossary\/unbalance\/\">obalans<\/a>), 2\u00d7 n\u00e4tfrekvensen (120 Hz vid 60 Hz, 100 Hz vid 50 Hz) samt elektromagnetiska krafter kopplade till <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/electrical-frequency\/\">n\u00e4tfrekvens<\/a>.<\/li>\n<li><strong>Symtom:<\/strong> ramvibrationer som \u00e4r betydligt starkare \u00e4n lagervibrationerna; ett h\u00f6rbart surrande eller brummande ljud.<\/li>\n<li><strong>Str\u00e4nghet:<\/strong> m\u00e4tv\u00e4rdena p\u00e5 ramen kan vara 5\u201310\u00d7 h\u00f6gre \u00e4n p\u00e5 lagren.<\/li>\n<\/ul>\n<h3>Fl\u00e4kt- och bl\u00e5sark\u00e5por<\/h3>\n<ul>\n<li><strong>Egenfrekvenser:<\/strong> 20\u2013200 Hz f\u00f6r vanliga industriella fl\u00e4ktar.<\/li>\n<li><strong>Upphetsning:<\/strong> <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/blade-passing-frequency\/\">bladpasseringsfrekvens<\/a> (antal blad \u00d7 varvtal).<\/li>\n<li><strong>Symtom:<\/strong> H\u00f6ljets paneler vibrerar v\u00e5ldsamt; h\u00f6gt aerodynamiskt ljud<\/li>\n<li><strong>Karakteristisk:<\/strong> kan upptr\u00e4da endast vid vissa hastigheter eller fl\u00f6desf\u00f6rh\u00e5llanden.<\/li>\n<\/ul>\n<h3>Pump casings<\/h3>\n<ul>\n<li><strong>Egenfrekvenser:<\/strong> 30\u2013300 Hz beroende p\u00e5 h\u00f6ljets utformning.<\/li>\n<li><strong>Upphetsning:<\/strong> <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/vane-passing-frequency\/\">skovelpasseringsfrekvens<\/a> och hydrauliska pulseringar.<\/li>\n<li><strong>Symtom:<\/strong> vibrationer i h\u00f6ljet, buller och risk f\u00f6r utmattningssprickor.<\/li>\n<li><strong>Hydraulkoppling:<\/strong> Ett v\u00e4tskefyllt h\u00f6lje kan \u00f6verf\u00f6ra vibrationer mellan rotorn och h\u00f6ljet, vilket komplicerar situationen.<\/li>\n<\/ul>\n<h3>V\u00e4xell\u00e5dshus<\/h3>\n<ul>\n<li>Excited by <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/gear-mesh-frequency\/\">kugghjulsingreppsfrekvens<\/a>.<\/li>\n<li>Ramens egenfrekvenser sammanfaller ofta med kuggingreppsfrekvensen och dess \u00f6vertoner.<\/li>\n<li>Ger ett karakteristiskt h\u00f6gt vinande kuggljud n\u00e4r det g\u00e5r i resonans.<\/li>\n<\/ul>\n<h2>3. Vibrationsm\u00f6nster och detektering<\/h2>\n<h3>Typiska symtom<\/h3>\n<ul>\n<li><strong>Platsberoende:<\/strong> Vibrationerna varierar kraftigt \u00f6ver ramens yta \u2013 skillnader p\u00e5 upp till tio g\u00e5nger mellan olika punkter \u00e4r vanliga.<\/li>\n<li><strong>Lager kontra ram:<\/strong> ramvibrationerna \u00e4r betydligt st\u00f6rre \u00e4n lagervibrationerna (ofta 3\u201310 g\u00e5nger s\u00e5 stora).<\/li>\n<li><strong>Frekvensspecifikt:<\/strong> problemet upptr\u00e4der endast vid resonansfrekvensen; \u00f6vriga frekvenser ser normala ut.<\/li>\n<li><strong>Hastighetsberoende:<\/strong> kraftigt inom ett smalt intervall (\u00b110\u201320 % av resonanshastigheten).<\/li>\n<li><strong>Visual motion:<\/strong> Ramens r\u00f6relse syns ofta med blotta \u00f6gat.<\/li>\n<\/ul>\n<h3>Slagtest<\/h3>\n<p>Det avg\u00f6rande testet. Sl\u00e5 p\u00e5 ramen med en gummiklubba eller en m\u00e4tklubba och m\u00e4t responsen med en <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/accelerometer\/\">accelerometer<\/a>, och avl\u00e4sa ramens naturliga frekvenser utifr\u00e5n topparna i frekvensresponsen. Genom att j\u00e4mf\u00f6ra dessa toppar med driftsfrekvenserna (1\u00d7, 2\u00d7, bladpassage osv.) uppt\u00e4cker man omedelbart eventuella farliga sammanfall. Se <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/bump-test\/\">bumptest<\/a> och <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/impact-testing\/\">slagprovning<\/a> f\u00f6r den fullst\u00e4ndiga beskrivningen.<\/p>\n<h3>Unders\u00f6kning med r\u00f6rlig accelerometer<\/h3>\n<p>M\u00e4t vibrationerna p\u00e5 flera st\u00e4llen l\u00e4ngs ramen medan maskinen \u00e4r ig\u00e5ng och skapa en vibrationskarta \u00f6ver omr\u00e5den med h\u00f6ga respektive l\u00e5ga v\u00e4rden. M\u00f6nstret avsl\u00f6jar sv\u00e4ngningsformen \u2013 b\u00f6jning, vridning eller panelb\u00f6jning \u2013 och visar var antinoderna (maximal r\u00f6relse) och noderna (minimal r\u00f6relse) finns. En fullst\u00e4ndig <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/ods-analysis\/\">analys av driftsavb\u00f6jningsform (ODS)<\/a> animerar denna r\u00f6relse, och en formell modalanalys <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/modal-analysis\/\">modalanalys<\/a> extraherar de underliggande sv\u00e4ngningsformerna.<\/p>\n<h3>M\u00e4tning av \u00f6verf\u00f6ringsfunktion<\/h3>\n<p>M\u00e4t <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/coherence\/\">koherens<\/a> mellan lagervibrationer (ing\u00e5ngssignalen) och ramvibrationer (utg\u00e5ngssignalen). H\u00f6g koherens vid en viss frekvens bekr\u00e4ftar att ramr\u00f6relsen drivs av, och \u00e4r i resonans med, rotorns drivkraft. Den <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/transfer-function\/\">\u00f6verf\u00f6ringsfunktion<\/a> sj\u00e4lv anger f\u00f6rst\u00e4rkningsfaktorn.<\/p>\n<h2>4. Bekr\u00e4ftelse av resonans i f\u00e4ltet<\/h2>\n<p>Innan n\u00e5gon konstruktion f\u00f6rst\u00e4rks eller n\u00e5gon rotor r\u00f6rs vid m\u00e5ste diagnosen bekr\u00e4ftas \u2013 och det inneb\u00e4r att man m\u00e5ste m\u00e4ta rotorns faktiska beteende separat fr\u00e5n ramens. En b\u00e4rbar tv\u00e5kanalsanalysator som till exempel <a href=\"https:\/\/vibromera.eu\/sv\/produkt\/balanset-1\/\">Balanset-1A<\/a> g\u00f6r det enkelt: en analytiker kan f\u00e5nga upp <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/phase\/\">amplitud och fas<\/a> och hela spektrumet vid lagerhuset, flytta sedan sensorn till den misst\u00e4nkta panelen och observera hur niv\u00e5n stiger vid resonansfrekvensen medan fasen skiftar genom strukturmoden. Om rotorns 1\u00d7-vibration \u00e4r m\u00e5ttlig vid lagret men enorm p\u00e5 ramen, \u00e4r slutsatsen resonans, inte obalans. Med samma instrument kan du provbalansera rotorn f\u00f6r att utesluta eller bekr\u00e4fta obalans, och k\u00f6ra en utrullning s\u00e5 att resonanstoppen visas n\u00e4r hastigheten passerar den.<\/p>\n<h2>5. L\u00f6sningar och \u00e5tg\u00e4rder<\/h2>\n<h3>F\u00f6rst\u00e4rknings\u00e5tg\u00e4rder<\/h3>\n<ul>\n<li><strong>L\u00e4gg till f\u00f6rst\u00e4rkningsribbor eller f\u00f6rst\u00e4rkningspl\u00e5tar:<\/strong> \u00f6kar b\u00f6jstyvheten, h\u00f6jer egenfrekvensen \u00f6ver exciteringsomr\u00e5det, \u00e4r kostnadseffektiv och kan eftermonteras p\u00e5 befintlig utrustning.<\/li>\n<li><strong>\u00d6ka materialtjockleken:<\/strong> Att f\u00f6rst\u00e4rka ramv\u00e4ggar eller paneler \u00f6kar styvheten och frekvensen avsev\u00e4rt, \u00e4ven om det kan kr\u00e4va nya gjutgods eller tillverkade delar.<\/li>\n<li><strong>Konstruktionsf\u00f6rband och avstivningar:<\/strong> Genom att f\u00f6rbinda ramens motsatta sidor f\u00f6rhindras b\u00f6jning; tv\u00e4rstag ger vridstyvhet och kan ofta monteras p\u00e5 utsidan.<\/li>\n<\/ul>\n<h3>Mass addition<\/h3>\n<ul>\n<li><strong>S\u00e4nk egenfrekvensen:<\/strong> \u00f6ka massan f\u00f6r att s\u00e4nka frekvensen under exciteringsomr\u00e5det.<\/li>\n<li><strong>Strategisk placering:<\/strong> L\u00e4gg till massa vid antinoderna f\u00f6r b\u00e4sta m\u00f6jliga effekt.<\/li>\n<li><strong>Tuned mass:<\/strong> en noggrant ber\u00e4knad massa flyttar en viss problematisk sv\u00e4ngningsform.<\/li>\n<li><strong>Avv\u00e4gning:<\/strong> extra vikt \u00e4r inte \u00f6nskv\u00e4rd i alla till\u00e4mpningar.<\/li>\n<\/ul>\n<p>Oavsett om du v\u00e4ljer att h\u00f6ja eller s\u00e4nka frekvensen kan du med en snabb ber\u00e4kning undvika n\u00e4sta resonansband. En <a href=\"https:\/\/vibromera.eu\/sv\/calculators\/foundation-natural-frequency\/\">kalkylator f\u00f6r naturlig frekvens f\u00f6r fundament<\/a> och en <a href=\"https:\/\/vibromera.eu\/sv\/calculators\/damping-ratio-calculator\/\">Kalkylator f\u00f6r d\u00e4mpningsf\u00f6rh\u00e5llande<\/a> hj\u00e4lpa dig att uppskatta var en modifierad konstruktion kommer att hamna innan n\u00e5gon metall kapas.<\/p>\n<h3>D\u00e4mpningsbehandlingar<\/h3>\n<ul>\n<li><strong>D\u00e4mpning med begr\u00e4nsat lager:<\/strong> ett viskoelastiskt skikt som \u00e4r placerat mellan metallskikt, anv\u00e4nt p\u00e5 stora plana paneler och h\u00f6ljen. Minskar resonanstoppen med 50\u201380 % och fungerar v\u00e4l inom frekvensomr\u00e5det 20\u2013500 Hz.<\/li>\n<li><strong>Friskiktsd\u00e4mpning:<\/strong> d\u00e4mpningsmaterial som \u00e4r direkt fastsatt p\u00e5 den vibrerande ytan \u2013 enklare \u00e4n metoden med inneslutet skikt men mindre effektivt, l\u00e4mpligt d\u00e4r utrymmet \u00e4r begr\u00e4nsat.<\/li>\n<\/ul>\n<h3>Driftsf\u00f6r\u00e4ndringar<\/h3>\n<ul>\n<li><strong>Hastighets\u00e4ndring:<\/strong> k\u00f6ras med en hastighet d\u00e4r resonans inte uppst\u00e5r.<\/li>\n<li><strong>Minska drivkraften:<\/strong> improve <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/balansering\/\">balans<\/a> och <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/misalignment\/\">uppriktning<\/a> f\u00f6r att minska amplituden hos den excitation som driver resonansen.<\/li>\n<li><strong>Processf\u00f6r\u00e4ndringar:<\/strong> \u00c4ndra fl\u00f6de, tryck eller belastning f\u00f6r att \u00e4ndra excitationsfrekvenser<\/li>\n<\/ul>\n<h2>6. F\u00f6rebyggande genom konstruktion<\/h2>\n<h3>Designprinciper<\/h3>\n<ul>\n<li><strong>Tillr\u00e4cklig styvhet:<\/strong> utforma ramen s\u00e5 att dess egenfrekvenser ligger \u00f6ver tv\u00e5 g\u00e5nger den h\u00f6gsta exciteringsfrekvensen.<\/li>\n<li><strong>Massf\u00f6rdelning:<\/strong> Undvik koncentrerade massor som ger upphov till l\u00e5gfrekventa sv\u00e4ngningsl\u00e4gen.<\/li>\n<li><strong>Ribbning och f\u00f6rst\u00e4rkning:<\/strong> bygg in f\u00f6rst\u00e4rkningar redan fr\u00e5n b\u00f6rjan.<\/li>\n<li><strong>Modalanalys:<\/strong> anv\u00e4nd FEA under konstruktionsfasen f\u00f6r att f\u00f6ruts\u00e4ga och optimera egenfrekvenser.<\/li>\n<\/ul>\n<h3>Designverifiering<\/h3>\n<ul>\n<li>Prototyptestning med slagprovning.<\/li>\n<li>M\u00e4tning av driftsform (ODS) p\u00e5 de f\u00f6rsta tillverkade enheterna.<\/li>\n<li>Om resonanser uppt\u00e4cks b\u00f6r konstruktionen ses \u00f6ver innan tillverkningen p\u00e5b\u00f6rjas.<\/li>\n<\/ul>\n<h2>7. Fallexempel<\/h2>\n<p><strong>Situation:<\/strong> en 75 hk-motor som driver en centrifugalfl\u00e4kt, med kraftiga ljud- och vibrationsst\u00f6rningar.<\/p>\n<ul>\n<li><strong>Symtom:<\/strong> Motorramens vibrationer uppg\u00e5r till 12 mm\/s; lagervibrationerna endast 2,5 mm\/s.<\/li>\n<li><strong>Frekvens:<\/strong> 120 Hz (dubbelt s\u00e5 h\u00f6g frekvens som n\u00e4tfrekvensen vid 60 Hz).<\/li>\n<li><strong>Impact test:<\/strong> visade att ramens egenfrekvens l\u00e5g p\u00e5 118 Hz \u2013 n\u00e4stan exakt vid exciteringsfrekvensen.<\/li>\n<li><strong>Grundorsak:<\/strong> ramen var i resonans vid den elektromagnetiska exciteringsfrekvensen.<\/li>\n<li><strong>L\u00f6sning:<\/strong> Fyra f\u00f6rst\u00e4rkningspl\u00e5tar av vinkelj\u00e4rn monterades f\u00f6r att f\u00e4sta motorf\u00f6tterna vid \u00e4ndk\u00e5porna.<\/li>\n<li><strong>Resultat:<\/strong> ramens egenfrekvens skiftade till 165 Hz och vibrationerna minskade till 3,2 mm\/s \u2013 vilket inneb\u00e4r att de \u00e5terigen ligger v\u00e4l inom det acceptabla intervallet enligt <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/iso-20816-3\/\">ISO 20816-3<\/a> (den moderna efterf\u00f6ljaren till ISO 10816-3).<\/li>\n<li><strong>Kostnad:<\/strong> cirka 200 dollar i materialkostnader, j\u00e4mf\u00f6rt med cirka 8 000 dollar f\u00f6r ett motorbyte.<\/li>\n<\/ul>\n<p>Ramresonans \u00e4r ett vanligt men ofta feldiagnostiserat vibrationsproblem. Genom att k\u00e4nna igen de typiska symptomen \u2013 kraftiga ramvibrationer i f\u00f6rh\u00e5llande till lagervibrationer, tydligt frekvensspecifika och starkt platsberoende \u2013 och till\u00e4mpa r\u00e4tt diagnostiska metoder (slagprovning och ODS-analys) kan man genomf\u00f6ra riktade \u00e5tg\u00e4rder som kraftigt minskar vibrationerna till en mycket rimlig kostnad.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/sv\/glossary\/\">\u2190 Tillbaka till huvudregistret<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>L\u00e4r dig om ramresonans, vibrationsf\u00f6rst\u00e4rkning n\u00e4r maskinramar, h\u00f6ljen eller kapslingar resonerar vid driftsfrekvenser, vilket orsakar \u00f6verdrivet buller och strukturell stress.<\/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\/sv\/wp-json\/wp\/v2\/glossary\/125","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/sv\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/sv\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/sv\/wp-json\/wp\/v2\/glossary\/125\/revisions"}],"predecessor-version":[{"id":101384,"href":"https:\/\/vibromera.eu\/sv\/wp-json\/wp\/v2\/glossary\/125\/revisions\/101384"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/sv\/wp-json\/wp\/v2\/media?parent=125"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/sv\/wp-json\/wp\/v2\/categories?post=125"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/sv\/wp-json\/wp\/v2\/tags?post=125"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}