{"id":123,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/foundation-stiffness\/"},"modified":"2026-05-23T22:51:22","modified_gmt":"2026-05-23T22:51:22","slug":"foundation-stiffness","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/sv\/glossary\/foundation-stiffness\/","title":{"rendered":"Vad \u00e4r grundstyvhet? Strukturdynamik"},"content":{"rendered":"<h1>F\u00f6rst\u00e5 grundens styvhet<\/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\/123?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\/123?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\/123?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\/123?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\/123?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\/123?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\/123?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\/123?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\/123?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\/123?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\/123?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\/123?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\/123?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\/123?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>Grundens styvhet<\/strong> \u00e4r motst\u00e5ndet hos en maskins hela b\u00e4rstruktur \u2014 bottenplatta, gjutb\u00e4dd, betongblock, fundament och den underliggande marken \u2014 mot deformation under de statiska och dynamiska krafter som en roterande maskin p\u00e5f\u00f6r den. Det kvantifieras som kraft per enhetsdeformation (N\/mm, N\/m eller lbf\/in) och besvarar en till synes enkel fr\u00e5ga: hur mycket f\u00f6rflyttar sig fundamentet n\u00e4r maskinen trycker p\u00e5 det? Det enda talet p\u00e5verkar hela maskinen, eftersom fundamentets styvhet \u00e4r en komponent i den <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/stiffness\/\">styvhet<\/a> kedja som, tillsammans med rotor- och lagerstyvhet, styr <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/rotor-dynamics\/\">rotor dynamic<\/a> beteende. G\u00f6r man fel h\u00e4r kan en annars utm\u00e4rkt maskin drabbas av s\u00e4nkt <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/critical-speed\/\">kritiska hastigheter<\/a>, amplified <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/vibration\/\">vibrationer<\/a>, glidande inriktning och f\u00f6rkortad livsl\u00e4ngd.<\/p>\n<h2>1. Definition och betydelse<\/h2>\n<p>Ett fundament \u00e4r s\u00e4llan det stela, or\u00f6rliga f\u00e4ste man f\u00f6rest\u00e4ller sig. Det deformeras, och ju styvare det \u00e4r, desto mindre deformeras det vid en given kraft. Eftersom rotorn, dess lager och fundamentet upptr\u00e4der som fj\u00e4drar i serie kan fundamentet bli den svaga l\u00e4nk som dominerar det samlade svaret \u2014 och resten av denna artikel f\u00f6rklarar exakt hur.<\/p>\n<h3>Effekt p\u00e5 kritiska hastigheter<\/h3>\n<p>Fundamentets styvhet matar direkt in i systemets <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/natural-frequency\/\">naturliga frekvenser<\/a>:<\/p>\n<ul>\n<li>Den totala systemstyvheten \u00e4r seriekopplingen av rotor-, lager- och fundamentstyvheter, varf\u00f6r det mjukaste elementet har st\u00f6rst inverkan.<\/li>\n<li>Ett mjukt fundament s\u00e4nker det totala v\u00e4rdet, vilket s\u00e4nker de kritiska varvtalen.<\/li>\n<li>Det kan dra ett kritiskt varvtal ut ur en s\u00e4ker marginal och in i driftomr\u00e5det.<\/li>\n<li>Eftersom det kritiska varvtalet skalas med \u221a(total styvhet) har \u00e4ven en modest minskning av fundamentets styvhet en verklig effekt \u2014 du kan storleksbest\u00e4mma f\u00f6rskjutningen med en <a href=\"https:\/\/vibromera.eu\/sv\/calculators\/rotor-critical-speed\/\">Rotorns kritiska hastighetskalkylator<\/a>.<\/li>\n<\/ul>\n<h3>Vibrationsamplitudkontroll<\/h3>\n<ul>\n<li><strong>Vid resonans:<\/strong> Styvare fundament producerar generellt l\u00e4gre toppvibrationsamplituder<\/li>\n<li><strong>Under resonans:<\/strong> ett mycket styvt fundament kan <em>\u00f6ka<\/em> \u00f6verf\u00f6rd vibration, eftersom den inte ger n\u00e5gon isolering.<\/li>\n<li><strong>Optimal design:<\/strong> det r\u00e4tta svaret avv\u00e4ger styvhet mot isolering f\u00f6r maskinens specifika frekvensomr\u00e5de.<\/li>\n<\/ul>\n<h3>Justeringsstabilitet<\/h3>\n<ul>\n<li>En flexibel fundament l\u00e5ter utrustningen f\u00f6rskjutas under driftslaster.<\/li>\n<li>Termisk utvidgning av maskinen kan deformera ett eftergivligt fundament.<\/li>\n<li>Precision <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/laser-shaft-alignment\/\">laseruppriktning av axlar<\/a> \u00e4r sv\u00e5rt att h\u00e5lla stabilt p\u00e5 ett mjukt underlag.<\/li>\n<li>Fundamentdeflexion orsakad av externa processlaster, s\u00e5som r\u00f6rkrafter, f\u00f6rs\u00e4mrar successivt inriktningen \u2013 och ett dolt <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/soft-foot\/\">mjukfot<\/a> kan efterlikna eller f\u00f6rv\u00e4rra problemet.<\/li>\n<\/ul>\n<h2>2. Komponenter som bidrar till fundamentets styvhet<\/h2>\n<p>Styvheten best\u00e4ms av den svagaste l\u00e4nken i en kedja av element, var och ett med sitt eget bidrag:<\/p>\n<h3>Betongfundamentblock<\/h3>\n<ul>\n<li><strong>Materialseghet:<\/strong> betongens elasticitetsmodul \u00e4r ungef\u00e4r 25\u201340 GPa.<\/li>\n<li><strong>Geometri:<\/strong> tjocklek, bredd och armering best\u00e4mmer blockets \u00f6vergripande styvhet.<\/li>\n<li><strong>Massa:<\/strong> ett st\u00f6rre block medf\u00f6r vanligtvis st\u00f6rre styvhet.<\/li>\n<li><strong>Skick:<\/strong> sprickor och f\u00f6rs\u00e4mring minskar styvheten avsev\u00e4rt.<\/li>\n<\/ul>\n<h3>Jord- och markst\u00f6d<\/h3>\n<ul>\n<li>Marken under blocket fungerar som ett elastiskt st\u00f6d i sig sj\u00e4lvt.<\/li>\n<li>Markstyvheten varierar enormt \u2013 fr\u00e5n ungef\u00e4r 10 N\/mm\u00b3 f\u00f6r mjuk lera till 1000+ N\/mm\u00b3 f\u00f6r berg.<\/li>\n<li>Det \u00e4r ofta det mjukaste elementet i hela kedjan.<\/li>\n<li>P\u00e5 d\u00e5lig mark kan den dominera den totala systemstyvheten oavsett hur bra blocket ovanf\u00f6r \u00e4r.<\/li>\n<\/ul>\n<h3>Maskinbasplatta<\/h3>\n<ul>\n<li>St\u00e5l- eller gjutj\u00e4rnsramen som f\u00f6rbinder utrustningen med betongen.<\/li>\n<li>Dess tjocklek, ribbning och layout styr dess bidrag.<\/li>\n<li>Den m\u00e5ste vara ordentligt ingjuten i blocket f\u00f6r att r\u00e4knas.<\/li>\n<\/ul>\n<h3>Piedestaler och st\u00f6d<\/h3>\n<ul>\n<li><a href=\"https:\/\/vibromera.eu\/sv\/glossary\/bearing-pedestal\/\">Lagerpiedestaler<\/a> f\u00f6rbinder lagren med bottenplattan.<\/li>\n<li>Pelare och konsoler b\u00e4r lasten ned\u00e5t.<\/li>\n<li>H\u00f6ga eller smala st\u00f6d kan ge \u00f6verraskande flexibilitet \u2014 och excitera <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/structural-resonance\/\">strukturell resonans<\/a>.<\/li>\n<\/ul>\n<h3>Grout layer<\/h3>\n<ul>\n<li>Fyller mellanrummet mellan bottenplatta och betong f\u00f6r att \u00f6verf\u00f6ra last.<\/li>\n<li>V\u00e4lutf\u00f6rd injektering \u00e4r avg\u00f6rande f\u00f6r att uppn\u00e5 avsedd styvhet.<\/li>\n<li>F\u00f6rs\u00e4mrad eller saknad injektering skapar mjuka punkter som fungerar som g\u00e5ngj\u00e4rn.<\/li>\n<li>Injekteringsbruk \u00e4r vanligtvis mindre styvt \u00e4n det st\u00e5l eller den betong det f\u00f6rbinder.<\/li>\n<\/ul>\n<h2>3. M\u00e4tning och bed\u00f6mning<\/h2>\n<h3>Statisk styvhetsprovning<\/h3>\n<ul>\n<li><strong>Metod:<\/strong> applicera en k\u00e4nd kraft och m\u00e4t den resulterande deformationen.<\/li>\n<li><strong>Ber\u00e4kning:<\/strong> k = F \/ \u03b4 \u2014 kraft dividerad med nedb\u00f6jning.<\/li>\n<li><strong>Typical test:<\/strong> en hydraulisk domkraft belastar bottenplattan.<\/li>\n<li><strong>M\u00e4tning:<\/strong> m\u00e4tklockor eller f\u00f6rflyttningssensorer avl\u00e4ser r\u00f6relsen.<\/li>\n<\/ul>\n<h3>Dynamisk styvhet \u2014 modalanalys<\/h3>\n<ul>\n<li>A <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/bump-test\/\">bumptest<\/a> med en instrumenterad hammare exciterar strukturen.<\/li>\n<li>Den <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/frequency-response-function\/\">frekvensresponsfunktion<\/a> m\u00e4ts fr\u00e5n svaret.<\/li>\n<li><a href=\"https:\/\/vibromera.eu\/sv\/glossary\/modal-analysis\/\">Modalanalys<\/a> extraherar egenfrekvenser, r\u00f6relsem\u00f6nster och effektiv styvhet.<\/li>\n<li>Det dynamiska resultatet \u00e4r mer representativt f\u00f6r hur fundamentet beter sig n\u00e4r maskinen \u00e4r i drift.<\/li>\n<\/ul>\n<h3>Driftbed\u00f6mning<\/h3>\n<ul>\n<li>J\u00e4mf\u00f6r vibration m\u00e4tt vid lagret med vibration vid fundamentet.<\/li>\n<li>H\u00f6g transmissibilitet \u2014 att fundamentet r\u00f6r sig n\u00e4stan lika mycket som lagret \u2014 indikerar ett mjukt st\u00f6d i f\u00f6rh\u00e5llande till maskinen.<\/li>\n<li>L\u00e5g transmissibilitet pekar p\u00e5 ett styvt fundament eller effektiv isolering.<\/li>\n<li><a href=\"https:\/\/vibromera.eu\/sv\/glossary\/bode-plot\/\">Bode-diagram<\/a> fr\u00e5n start eller <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/coastdown\/\">nedrullning<\/a> avsl\u00f6jar fundamentets egenmoder n\u00e4r de sveps igenom.<\/li>\n<\/ul>\n<p>Denna j\u00e4mf\u00f6relse \u00e4r enkel att utf\u00f6ra i f\u00e4lt med en portabel tv\u00e5kanalig analysator. Ett instrument som <a href=\"https:\/\/vibromera.eu\/sv\/produkt\/balanset-1\/\">Balanset-1A<\/a> kan avl\u00e4sa vibration samtidigt vid lagerlocket och p\u00e5 bottenplattan eller st\u00f6det, s\u00e5 att en ingenj\u00f6r p\u00e5 plats kan bed\u00f6ma om strukturen r\u00f6r sig med maskinen \u2014 en snabb, praktisk kontroll f\u00f6r ett flexibelt eller f\u00f6rs\u00e4mrat fundament, innan man \u00e5tar sig kostsamt strukturarbete.<\/p>\n<h2>4. Designkrav<\/h2>\n<h3>Allm\u00e4nna riktlinjer<\/h3>\n<ul>\n<li><strong>Styvt (\u00f6ver-resonans) utf\u00f6rande:<\/strong> grundens egenfrekvens b\u00f6r \u00f6verstiga 2\u00d7 den h\u00f6gsta maskinhastigheten.<\/li>\n<li><strong>Mjukt (isolerat) utf\u00f6rande:<\/strong> alternativt placeras den under 0,5\u00d7 den l\u00e4gsta maskinhastigheten.<\/li>\n<li><strong>Undvika:<\/strong> grundresonanser inom intervallet 0,5\u00d7 till 2,0\u00d7 drifthastigheten.<\/li>\n<li><strong>M\u00e5l:<\/strong> grundstyvhet som \u00e4r st\u00f6rre \u00e4n ungef\u00e4r 10\u00d7 lagerstyvheten, s\u00e5 att dess inverkan p\u00e5 rotordynamiken f\u00f6rblir liten. Du kan kontrollera den strukturella moden mot drifthastigheten med en <a href=\"https:\/\/vibromera.eu\/sv\/calculators\/foundation-natural-frequency\/\">Kalkylator f\u00f6r fundamentets naturliga frekvens<\/a>.<\/li>\n<\/ul>\n<h3>Utrustningsspecifika krav<\/h3>\n<ul>\n<li><strong>Turbiner:<\/strong> mycket styva fundament, d\u00e4r betongens massa typiskt \u00e4r 3\u20135\u00d7 rotormassan.<\/li>\n<li><strong>Kolvkompressorer:<\/strong> massiva fundament f\u00f6r att absorbera pulserande laster.<\/li>\n<li><strong>H\u00f6ghastighetsmaskiner:<\/strong> tillr\u00e4ckligt styvt f\u00f6r att bevara separationen vid kritiska varvtal.<\/li>\n<li><strong>Precisionsutrustning:<\/strong> extremt styvt f\u00f6r att f\u00f6rhindra driftsdrift.<\/li>\n<\/ul>\n<h2>5. Problem till f\u00f6ljd av otillr\u00e4cklig styvhet<\/h2>\n<h3>Reducerade kritiska hastigheter<\/h3>\n<ul>\n<li>Kritiska varvtal sjunker in i driftomr\u00e5det.<\/li>\n<li>H\u00f6ga vibrationer upptr\u00e4der vid varvtal som borde vara s\u00e4kra.<\/li>\n<li>Maskinen kan helt sakna m\u00f6jlighet att n\u00e5 sitt konstruktionsvarvtal.<\/li>\n<li>\u00c5tg\u00e4rden \u00e4r f\u00f6rstyvning av fundamentet eller en varvtalsbegr\u00e4nsning.<\/li>\n<\/ul>\n<h3>\u00d6verdriven vibration<\/h3>\n<ul>\n<li>Fundamentr\u00f6relser f\u00f6rst\u00e4rker den totala vibrationsniv\u00e5n.<\/li>\n<li>Konstruktionen i sig kan resonera.<\/li>\n<li>Vibrationer \u00f6verf\u00f6rs till angr\u00e4nsande utrustning.<\/li>\n<li>Upprepade b\u00f6jr\u00f6relser kan orsaka strukturella <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/fatigue\/\">tr\u00f6tthet<\/a> damage.<\/li>\n<\/ul>\n<h3>Justeringsinstabilitet<\/h3>\n<ul>\n<li>Utrustning f\u00f6rskjuts p\u00e5 ett flexibelt underlag, varf\u00f6r noggrant uppn\u00e5dd inriktning g\u00e5r f\u00f6rlorad.<\/li>\n<li>Effekterna av termisk expansion f\u00f6rst\u00e4rks.<\/li>\n<li>Varierande processlaster g\u00f6r att inriktningen vandrar.<\/li>\n<\/ul>\n<h2>6. F\u00f6rb\u00e4ttringsmetoder<\/h2>\n<h3>F\u00f6rb\u00e4ttring av betongfundament<\/h3>\n<ul>\n<li><strong>L\u00e4gg till massa:<\/strong> \u00f6ka fundamentets storlek eller tjocklek.<\/li>\n<li><strong>F\u00f6rst\u00e4rka:<\/strong> l\u00e4gg till st\u00e5larmering eller sp\u00e4nnkablar.<\/li>\n<li><strong>Repair cracks:<\/strong> epoxiinjicering eller betong\u00f6kning \u00e5terst\u00e4ller f\u00f6rlorad styvhet.<\/li>\n<li><strong>F\u00f6rankra till berggrunden:<\/strong> p\u00e5lar eller brunnar n\u00e5r kompetenta jordskikt.<\/li>\n<\/ul>\n<h3>F\u00f6rskjutningsplattans f\u00f6rstyvning<\/h3>\n<ul>\n<li>Tills\u00e4tt knutpl\u00e5tar eller ribbor till b\u00e4rverket.<\/li>\n<li>\u00d6ka f\u00f6rskjutningsplattans tjocklek.<\/li>\n<li>F\u00f6rb\u00e4ttra ingjutningens t\u00e4ckning och kvalitet och eliminera h\u00e5ligheter.<\/li>\n<li>L\u00e4gg till bracing mellan pedalerna.<\/li>\n<\/ul>\n<h3>Jordf\u00f6rb\u00e4ttring<\/h3>\n<ul>\n<li>Jordstabilisering eller injektering under tryck.<\/li>\n<li>Djupgrundl\u00e4ggning (p\u00e5lar) som g\u00e5r f\u00f6rbi svag ytlig mark.<\/li>\n<li>Packning eller t\u00e4tning.<\/li>\n<li>Geoteknisk konsultation vid allvarliga markproblem.<\/li>\n<\/ul>\n<h3>Operativ anpassning<\/h3>\n<ul>\n<li><strong>Hastighetsjustering:<\/strong> driva maskinen utan att ber\u00f6ra fundamentets resonansfrekvenser.<\/li>\n<li><strong>Vibrationsisolering:<\/strong> montera isolatorer f\u00f6r att frikoppla maskinen fr\u00e5n fundamentet.<\/li>\n<li><strong>Balansering:<\/strong> sn\u00e4vare balanstoleranser minskar excitationen vid k\u00e4llan \u2014 den \u00e5tg\u00e4rd som underh\u00e5llsteam oftast tar till f\u00f6rst.<\/li>\n<li><strong>D\u00e4mpning:<\/strong> tills\u00e4tt d\u00e4mpningsbehandlingar p\u00e5 konstruktionen.<\/li>\n<\/ul>\n<p>Det balanseringsalternativet \u00e4r v\u00e4rt att uppeh\u00e5lla sig vid, eftersom det ofta \u00e4r det mest praktiska. Excitation fr\u00e5n rotor <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/unbalance\/\">obalans<\/a> \u00e4r den dynamiska kraft som fundamentet m\u00e5ste ta upp; minska obalansen och du minskar belastningen p\u00e5 konstruktionen. Balansering p\u00e5 plats <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/faltbalansering\/\">f\u00e4ltbalansering<\/a> kan d\u00e4rf\u00f6r d\u00e4mpa fundamentdrivet vibrationer utan att vidr\u00f6ra betongen alls \u2014 ofta den snabbaste och billigaste \u00e5tg\u00e4rden medan en mer l\u00e5ngsiktig konstruktiv \u00e5tg\u00e4rd planeras.<\/p>\n<h2>7. B\u00e4sta praxis vid fundamentkonstruktion<\/h2>\n<h3>Nya installationer<\/h3>\n<ul>\n<li>Utf\u00f6r en geoteknisk unders\u00f6kning av markf\u00f6rh\u00e5llandena.<\/li>\n<li>Ber\u00e4kna erforderlig fundamentmassa och geometri.<\/li>\n<li>Inkludera en dynamisk analys av egenfrekvenser och respons p\u00e5 obalans.<\/li>\n<li>Dimensionera f\u00f6r tillr\u00e4cklig styvhet och massa tillsammans.<\/li>\n<li>S\u00e4kerst\u00e4ll isolering fr\u00e5n angr\u00e4nsande konstruktioner.<\/li>\n<li>Inkludera f\u00f6rberedelser f\u00f6r ingjutning och inriktning.<\/li>\n<\/ul>\n<h3>Bed\u00f6mning av befintliga fundament<\/h3>\n<ul>\n<li>M\u00e4t vibration vid fundamentet och j\u00e4mf\u00f6r det med lagervibration.<\/li>\n<li>Utf\u00f6r modalanalys f\u00f6r att identifiera fundamentets egenfrekvenser.<\/li>\n<li>Kontrollera om det finns sprickor, f\u00f6rs\u00e4mring och s\u00e4ttningar.<\/li>\n<li>Kontrollera att injekteringsbrukets integritet under bottenplattorna \u00e4r intakt.<\/li>\n<li>J\u00e4mf\u00f6r faktiska v\u00e4rden mot de ursprungliga konstruktionsspecifikationerna.<\/li>\n<\/ul>\n<p>Fundamentets styvhet \u00e4r l\u00e4tt att f\u00f6rbise och \u00e4nd\u00e5 grundl\u00e4ggande f\u00f6r roterande maskiners prestanda. Tillr\u00e4cklig styvhet h\u00e5ller kritiska varvtal v\u00e4l \u00e5tskilda, uppr\u00e4tth\u00e5ller stabilt inriktning och undviker resonans; otillr\u00e4cklig styvhet kan f\u00e5 annars v\u00e4lljudande utrustning att g\u00e5 oj\u00e4mnt och op\u00e5litligt. Att behandla fundamentet som en aktiv del av <a href=\"https:\/\/vibromera.eu\/sv\/glossary\/rotor-bearing-system\/\">rotorlagersystem<\/a> \u2014 uppm\u00e4tt, utv\u00e4rderat och underh\u00e5llet som vilken annan komponent som helst \u2014 \u00e4r k\u00e4nnetecknet p\u00e5 ett grundligt vibrationsprogram.<\/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 grundstyvhet, maskinst\u00f6dstrukturers motst\u00e5ndskraft mot nedb\u00f6jning, vilket \u00e4r avg\u00f6rande f\u00f6r kritiska hastigheter, vibrationsamplituder och uppriktningsstabilitet.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,110],"tags":[],"class_list":["post-123","glossary","type-glossary","status-publish","hentry","category-glossary","category-vibration-diagnostics"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/sv\/wp-json\/wp\/v2\/glossary\/123","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\/123\/revisions"}],"predecessor-version":[{"id":101383,"href":"https:\/\/vibromera.eu\/sv\/wp-json\/wp\/v2\/glossary\/123\/revisions\/101383"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/sv\/wp-json\/wp\/v2\/media?parent=123"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/sv\/wp-json\/wp\/v2\/categories?post=123"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/sv\/wp-json\/wp\/v2\/tags?post=123"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}