{"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\/ro\/glossary\/foundation-stiffness\/","title":{"rendered":"Ce este rigiditatea funda\u021biei? Dinamica structural\u0103"},"content":{"rendered":"<h1>\u00cen\u021belegerea rigidit\u0103\u021bii funda\u021biei<\/h1>\n\t\t<section class=\"woocommerce hestia-shop products is-shortcode\" id=\"products\" data-sorder=\"hestia_shop\" >\n\t\t\t\t\t\t<div class=\"\">\n\t\t\t\t\t\t<div class=\"hestia-shop-content\">\n\t\t\t<div class=\"row\" data-aos=\"fade-up\" >\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/balanset-1\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/balanset-1\/\" title=\"Echilibrator portabil \u0219i analizor de vibra\u021bii Balanset-1A\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Balanset-1A kit complet \u2014 echilibrator portabil \u0219i analizor de vibra\u021bii\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-272x182.webp 272w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/ro\/product-category\/devices\/\" rel=\"tag\">Dispozitive<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/ro\/product\/balanset-1\/\" title=\"Echilibrator portabil \u0219i analizor de vibra\u021bii Balanset-1A\">Echilibrator portabil \u0219i analizor de vibra\u021bii Balanset-1A<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>1,975.00<\/span> + TVA (dac\u0103 este cazul)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/ro\/wp-json\/wp\/v2\/glossary\/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=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/ro\/wp-json\/wp\/v2\/glossary\/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=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Portable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u201ePortable balancer &amp; Vibration analyzer Balanset-1A\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_986\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/vibration-sensor\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/vibration-sensor\/\" title=\"Senzor de vibra\u021bii\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Prim-plan senzor de vibra\u021bii Balanset-1A\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3.webp 1280w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/ro\/product-category\/parts\/\" rel=\"tag\">Piese<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/ro\/product\/vibration-sensor\/\" title=\"Senzor de vibra\u021bii\">Senzor de vibra\u021bii<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>90.00<\/span> + TVA (dac\u0103 este cazul)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/ro\/wp-json\/wp\/v2\/glossary\/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=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/ro\/wp-json\/wp\/v2\/glossary\/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=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Vibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u201eVibration sensor\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1820\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/optical-sensor-for-balanset-and-arbalance\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Senzor optic (tahometru cu laser)\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Senzor optic (tahometru cu laser)\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1536x1023.webp 1536w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU.webp 1600w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/ro\/product-category\/parts\/\" rel=\"tag\">Piese<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/ro\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Senzor optic (tahometru cu laser)\">Senzor optic (tahometru cu laser)<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>124.00<\/span> + TVA (dac\u0103 este cazul)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/ro\/wp-json\/wp\/v2\/glossary\/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=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/ro\/wp-json\/wp\/v2\/glossary\/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=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Optical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201eOptical Sensor (Laser Tachometer)\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1832\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/balanset-4\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/balanset-4\/\" title=\"Balanset-4\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Kit de echilibrare a rotorului Vibromera: geant\u0103 de transport, condi\u021bioner de semnal multicanal, analizor portabil, baz\u0103 magnetic\u0103, senzori de vibra\u021bii \u0219i cabluri spiralate.\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4.webp 640w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/ro\/product-category\/devices\/\" rel=\"tag\">Dispozitive<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/ro\/product\/balanset-4\/\" title=\"Balanset-4\">Balanset-4<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>6,803.00<\/span> + TVA (dac\u0103 este cazul)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/ro\/wp-json\/wp\/v2\/glossary\/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=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/ro\/wp-json\/wp\/v2\/glossary\/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=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Balanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201eBalanset-4\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1833\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div><!-- \/.row --><div class=\"row\">\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/magnet-stand\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/magnet-stand\/\" title=\"Stand magnetic Insize-60-kgf\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Baza magnetic\u0103.\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36.webp 1280w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/ro\/product-category\/parts\/\" rel=\"tag\">Piese<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/ro\/product\/magnet-stand\/\" title=\"Stand magnetic Insize-60-kgf\">Stand magnetic Insize-60-kgf<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>46.00<\/span> + TVA (dac\u0103 este cazul)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/ro\/wp-json\/wp\/v2\/glossary\/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=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/ro\/wp-json\/wp\/v2\/glossary\/123?add-to-cart=1852\" 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class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/ro\/product-category\/parts\/\" rel=\"tag\">Piese<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/ro\/product\/reflective-tape\/\" title=\"Band\u0103 reflectorizant\u0103\">Band\u0103 reflectorizant\u0103<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>10.00<\/span> + TVA (dac\u0103 este cazul)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/ro\/wp-json\/wp\/v2\/glossary\/123?add-to-cart=2329\" data-quantity=\"1\" data-product_id=\"2329\" 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data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_2329\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/dynamic-balancer-balanset-1a\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/ro\/product\/dynamic-balancer-balanset-1a\/\" title=\"Echilibrator dinamic &quot;Balanset-1A&quot; OEM\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Con\u021binutul kitului Balanset-1A cu unitate de interfa\u021b\u0103, senzori, tahometru \u0219i accesorii\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-1024x683.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-1536x1024.webp 1536w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-2048x1366.webp 2048w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-e1732998877834.webp 708w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/ro\/product-category\/devices\/\" rel=\"tag\">Dispozitive<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/ro\/product\/dynamic-balancer-balanset-1a\/\" title=\"Echilibrator dinamic &quot;Balanset-1A&quot; OEM\">Echilibrator dinamic \"Balanset-1A\" OEM<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>1,735.00<\/span> + TVA (dac\u0103 este cazul)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/ro\/wp-json\/wp\/v2\/glossary\/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=\"Adaug\u0103 \u00een co\u0219\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adaug\u0103 \u00een co\u0219\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/ro\/wp-json\/wp\/v2\/glossary\/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=\"Adaug\u0103 \u00een co\u0219: &amp;lbquo;Dynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"\u201eDynamic balancer \u201cBalanset-1A\u201d OEM\u201d a fost ad\u0103ugat \u00een co\u0219\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adaug\u0103 \u00een co\u0219<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_4193\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/section>\n\t\t\n<p><strong>Rigiditatea funda\u021biei<\/strong> este rezisten\u021ba \u00eentregii structuri de sus\u021binere a unei ma\u0219ini \u2014 placa de baz\u0103, mortarul, blocurile de beton, soclurile \u0219i solul de dedesubt \u2014 la deformare sub ac\u021biunea for\u021belor statice \u0219i dinamice pe care o ma\u0219in\u0103 \u00een rota\u021bie le exercit\u0103 asupra acesteia. Aceasta se cuantific\u0103 ca for\u021b\u0103 pe unitate de deformare (N\/mm, N\/m sau lbf\/in) \u0219i r\u0103spunde la o \u00eentrebare aparent simpl\u0103: c\u00e2t de mult se deplaseaz\u0103 funda\u021bia atunci c\u00e2nd ma\u0219ina exercit\u0103 o for\u021b\u0103 asupra ei? Aceast\u0103 singur\u0103 valoare se propag\u0103 \u00een \u00eentreaga ma\u0219in\u0103, deoarece rigiditatea funda\u021biei este una dintre componentele <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/stiffness\/\">rigiditate<\/a> lan\u021bul care, \u00eempreun\u0103 cu rigiditatea rotorului \u0219i a rulmentului, determin\u0103 <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/rotor-dynamics\/\">rotor dynamic<\/a> comportament. Dac\u0103 gre\u0219e\u0219ti, o ma\u0219in\u0103 care altfel ar fi excelent\u0103 poate avea performan\u021be reduse <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/critical-speed\/\">viteze critice<\/a>, amplified <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/vibration\/\">vibra\u021bii<\/a>, alinierea incorect\u0103 \u0219i durata de via\u021b\u0103 redus\u0103.<\/p>\n<h2>1. Defini\u021bie \u0219i de ce este important\u0103<\/h2>\n<p>O funda\u021bie este rareori acea ancor\u0103 rigid\u0103 \u0219i imobil\u0103 pe care ne-o imagin\u0103m. Ea se deformeaz\u0103, iar cu c\u00e2t este mai rigid\u0103, cu at\u00e2t se deformeaz\u0103 mai pu\u021bin sub ac\u021biunea unei for\u021be date. Deoarece rotorul, rulmen\u021bii acestuia \u0219i funda\u021bia se comport\u0103 ca ni\u0219te arcuri conectate \u00een serie, funda\u021bia poate deveni veriga slab\u0103 care determin\u0103 r\u0103spunsul combinat \u2014 iar restul acestui articol explic\u0103 exact cum se \u00eent\u00e2mpl\u0103 acest lucru.<\/p>\n<h3>Efectul asupra vitezelor critice<\/h3>\n<p>Rigiditatea funda\u021biei influen\u021beaz\u0103 direct sistemul <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/natural-frequency\/\">frecven\u021be naturale<\/a>:<\/p>\n<ul>\n<li>Rigiditatea total\u0103 a sistemului reprezint\u0103 suma \u00een serie a rigidit\u0103\u021bilor rotorului, rulmentului \u0219i funda\u021biei, astfel \u00eenc\u00e2t elementul cel mai flexibil are cea mai mare influen\u021b\u0103.<\/li>\n<li>O funda\u021bie moale reduce rigiditatea total\u0103, ceea ce duce la sc\u0103derea vitezelor critice.<\/li>\n<li>Acest lucru poate reduce viteza critic\u0103 sub limita de siguran\u021b\u0103 \u0219i o poate aduce \u00een domeniul de func\u021bionare.<\/li>\n<li>Deoarece viteza critic\u0103 variaz\u0103 propor\u021bional cu \u221a(rigiditatea total\u0103), chiar \u0219i o sc\u0103dere modest\u0103 a rigidit\u0103\u021bii funda\u021biei are un efect real \u2014 po\u021bi estima amploarea acestei schimb\u0103ri cu ajutorul unui <a href=\"https:\/\/vibromera.eu\/ro\/calculators\/rotor-critical-speed\/\">Calculator de vitez\u0103 critic\u0103 a rotorului<\/a>.<\/li>\n<\/ul>\n<h3>Controlul amplitudinii vibra\u021biilor<\/h3>\n<ul>\n<li><strong>At resonance:<\/strong> Funda\u021biile mai rigide produc, \u00een general, amplitudini de vibra\u021bii de v\u00e2rf mai mici<\/li>\n<li><strong>Sub rezonan\u021b\u0103:<\/strong> o funda\u021bie foarte rigid\u0103 poate <em>cre\u0219te<\/em> vibra\u021bii transmise, deoarece nu asigur\u0103 izolare.<\/li>\n<li><strong>Design optim:<\/strong> R\u0103spunsul corect const\u0103 \u00een g\u0103sirea unui echilibru \u00eentre rigiditate \u0219i izolare pentru gama de frecven\u021be specific\u0103 a ma\u0219inii.<\/li>\n<\/ul>\n<h3>Stabilitatea aliniamentului<\/h3>\n<ul>\n<li>O funda\u021bie flexibil\u0103 permite echipamentelor s\u0103 se deplaseze sub sarcinile de exploatare.<\/li>\n<li>Extinderea termic\u0103 a ma\u0219inii poate deforma o funda\u021bie elastic\u0103.<\/li>\n<li>Precizie <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/laser-shaft-alignment\/\">alinierea arborilor cu laser<\/a> este greu de \u021binut pe o suprafa\u021b\u0103 moale.<\/li>\n<li>Deformarea funda\u021biei cauzat\u0103 de sarcinile externe generate de proces, cum ar fi for\u021bele exercitate de conducte, afecteaz\u0103 treptat alinierea \u2014 iar acest lucru r\u0103m\u00e2ne ascuns <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/soft-foot\/\">picior moale<\/a> pot imita sau agrava problema.<\/li>\n<\/ul>\n<h2>2. Componente care contribuie la rigiditatea funda\u021biei<\/h2>\n<p>Rigiditatea este determinat\u0103 de veriga cea mai slab\u0103 dintr-un lan\u021b de elemente, fiecare av\u00e2nd propria contribu\u021bie:<\/p>\n<h3>Bloc de funda\u021bie din beton<\/h3>\n<ul>\n<li><strong>Rigiditatea materialului:<\/strong> Modulul de elasticitate al betonului este de aproximativ 25\u201340 GPa.<\/li>\n<li><strong>Geometrie:<\/strong> grosimea, l\u0103\u021bimea \u0219i arm\u0103tura determin\u0103 rigiditatea general\u0103 a blocului.<\/li>\n<li><strong>Masa:<\/strong> un bloc mai mare asigur\u0103, de obicei, o rigiditate mai mare.<\/li>\n<li><strong>Stare:<\/strong> fisurile \u0219i deteriorarea reduc semnificativ rigiditatea.<\/li>\n<\/ul>\n<h3>Sol \u0219i reazem al terenului<\/h3>\n<ul>\n<li>Solul de sub bloc func\u021bioneaz\u0103 ca un suport elastic \u00een sine.<\/li>\n<li>Rigiditatea solului variaz\u0103 enorm \u2014 de la aproximativ 10 N\/mm\u00b3 \u00een cazul argilei moi p\u00e2n\u0103 la peste 1000 N\/mm\u00b3 \u00een cazul rocii.<\/li>\n<li>Adesea, acesta este elementul cel mai vulnerabil din \u00eentregul lan\u021b.<\/li>\n<li>\u00cen sol slab, acesta poate influen\u021ba \u00een mod decisiv rigiditatea total\u0103 a sistemului, indiferent de calitatea blocului situat deasupra lui.<\/li>\n<\/ul>\n<h3>Plac\u0103 de baz\u0103 a ma\u0219inii<\/h3>\n<ul>\n<li>Cadrul din o\u021bel sau font\u0103 care fixeaz\u0103 echipamentul de beton.<\/li>\n<li>Grosimea, nervurile \u0219i dispunerea sa sunt elementele care \u00eei determin\u0103 rolul.<\/li>\n<li>Pentru a fi valid, trebuie s\u0103 fie fixat corespunz\u0103tor de bloc.<\/li>\n<\/ul>\n<h3>Socluri \u0219i suporturi<\/h3>\n<ul>\n<li><a href=\"https:\/\/vibromera.eu\/ro\/glossary\/bearing-pedestal\/\">Piedestale de lag\u0103r<\/a> leag\u0103 rulmen\u021bii de placa de baz\u0103.<\/li>\n<li>St\u00e2lpii \u0219i consolele transmit sarcina \u00een jos.<\/li>\n<li>Soclurile \u00eenalte sau zvelte pot introduce o flexibilitate surprinz\u0103toare \u2014 \u0219i pot excita <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/structural-resonance\/\">rezonan\u021b\u0103 structural\u0103<\/a>.<\/li>\n<\/ul>\n<h3>Grout layer<\/h3>\n<ul>\n<li>Umple spa\u021biul dintre placa de baz\u0103 \u0219i beton pentru a transfera sarcina.<\/li>\n<li>Cimentarea corespunz\u0103toare este esen\u021bial\u0103 pentru asigurarea rigidit\u0103\u021bii.<\/li>\n<li>Chitul deteriorat sau lips\u0103 las\u0103 puncte slabe care ac\u021bioneaz\u0103 ca ni\u0219te balamale.<\/li>\n<li>Mortarul este, de obicei, mai pu\u021bin rigid dec\u00e2t o\u021belul sau betonul pe care \u00eel une\u0219te.<\/li>\n<\/ul>\n<h2>3. M\u0103surare \u0219i evaluare<\/h2>\n<h3>Testarea rigidit\u0103\u021bii statice<\/h3>\n<ul>\n<li><strong>Metod\u0103:<\/strong> aplica\u021bi o for\u021b\u0103 cunoscut\u0103 \u0219i m\u0103sura\u021bi deforma\u021bia rezultat\u0103.<\/li>\n<li><strong>Calcul:<\/strong> k = F \/ \u03b4 \u2014 for\u021ba \u00eemp\u0103r\u021bit\u0103 la deforma\u021bie.<\/li>\n<li><strong>Typical test:<\/strong> un cric hidraulic care ac\u021bioneaz\u0103 asupra pl\u0103cii de baz\u0103.<\/li>\n<li><strong>M\u0103surare:<\/strong> indicatorii cu cadran sau senzorii de deplasare m\u0103soar\u0103 mi\u0219carea.<\/li>\n<\/ul>\n<h3>Rigiditatea dinamic\u0103 \u2014 testarea modal\u0103<\/h3>\n<ul>\n<li>A <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/bump-test\/\">testul cu impact<\/a> cu ajutorul unui ciocan cu senzori se aplic\u0103 o for\u021b\u0103 asupra structurii.<\/li>\n<li>The <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/frequency-response-function\/\">func\u021bia de r\u0103spuns \u00een frecven\u021b\u0103<\/a> se m\u0103soar\u0103 pe baza r\u0103spunsului.<\/li>\n<li><a href=\"https:\/\/vibromera.eu\/ro\/glossary\/modal-analysis\/\">Analiz\u0103 modal\u0103<\/a> extrag frecven\u021bele naturale, formele modale \u0219i rigiditatea efectiv\u0103.<\/li>\n<li>Rezultatul dinamic reflect\u0103 mai bine comportamentul funda\u021biei \u00een timpul func\u021bion\u0103rii ma\u0219inii.<\/li>\n<\/ul>\n<h3>Evaluare opera\u021bional\u0103<\/h3>\n<ul>\n<li>Compara\u021bi vibra\u021biile m\u0103surate la rulment cu cele de la funda\u021bie.<\/li>\n<li>O transmisibilitate ridicat\u0103 \u2014 funda\u021bia mi\u0219c\u00e2ndu-se aproape la fel de mult ca \u0219i rulmentul \u2014 indic\u0103 un suport moale \u00een raport cu ma\u0219ina.<\/li>\n<li>O transmisibilitate redus\u0103 indic\u0103 o funda\u021bie rigid\u0103 sau o izolare eficient\u0103.<\/li>\n<li><a href=\"https:\/\/vibromera.eu\/ro\/glossary\/bode-plot\/\">Diagrame Bode<\/a> de la pornire sau <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/coastdown\/\">decelerare libera<\/a> s\u0103 dezv\u0103luie modurile funda\u021biei pe m\u0103sur\u0103 ce sunt parcurse.<\/li>\n<\/ul>\n<p>Aceast\u0103 compara\u021bie se realizeaz\u0103 cu u\u0219urin\u021b\u0103 pe teren, folosind un analizor portabil cu dou\u0103 canale. Un instrument precum <a href=\"https:\/\/vibromera.eu\/ro\/produs\/balanset-1\/\">Balanset-1A<\/a> poate m\u0103sura simultan vibra\u021biile la capacul rulmentului \u0219i la placa de baz\u0103 sau la soclu, astfel \u00eenc\u00e2t un inginer poate stabili direct la fa\u021ba locului dac\u0103 structura se mi\u0219c\u0103 odat\u0103 cu ma\u0219ina \u2014 o verificare rapid\u0103 \u0219i practic\u0103 pentru a depista o funda\u021bie flexibil\u0103 sau deteriorat\u0103, \u00eenainte de a se angaja \u00een lucr\u0103ri structurale costisitoare.<\/p>\n<h2>4. Cerin\u021be de proiectare<\/h2>\n<h3>Orient\u0103ri generale<\/h3>\n<ul>\n<li><strong>Construc\u021bie rigid\u0103 (peste rezonan\u021b\u0103):<\/strong> frecven\u021ba natural\u0103 a funda\u021biei trebuie s\u0103 dep\u0103\u0219easc\u0103 de dou\u0103 ori viteza maxim\u0103 a ma\u0219inii.<\/li>\n<li><strong>Construc\u021bie flexibil\u0103 (izolat\u0103):<\/strong> alternativ, seta\u021bi-o la o valoare mai mic\u0103 de 0,5 ori viteza minim\u0103 a ma\u0219inii.<\/li>\n<li><strong>Evita:<\/strong> rezonan\u021be ale funda\u021biei cuprinse \u00eentre 0,5\u00d7 \u0219i 2,0\u00d7 viteza de func\u021bionare.<\/li>\n<li><strong>\u0162int\u0103:<\/strong> rigiditatea funda\u021biei s\u0103 fie de aproximativ 10 ori mai mare dec\u00e2t rigiditatea lag\u0103rului, astfel \u00eenc\u00e2t influen\u021ba acesteia asupra dinamicii rotorului r\u0103m\u00e2ne redus\u0103. Pute\u021bi verifica modul structural \u00een func\u021bie de viteza de rota\u021bie cu ajutorul unui <a href=\"https:\/\/vibromera.eu\/ro\/calculators\/foundation-natural-frequency\/\">Calculator pentru frecven\u021ba natural\u0103 a funda\u021biei<\/a>.<\/li>\n<\/ul>\n<h3>Cerin\u021be specifice echipamentelor<\/h3>\n<ul>\n<li><strong>Turbine:<\/strong> fundamente extrem de rigide, cu o mas\u0103 de beton de obicei de 3\u20135 ori mai mare dec\u00e2t masa rotorului.<\/li>\n<li><strong>Compresoare cu piston:<\/strong> funda\u021bii masive pentru a absorbi sarcinile pulsatorii.<\/li>\n<li><strong>Ma\u0219ini de mare vitez\u0103:<\/strong> suficient de rigid pentru a asigura separarea la viteza critic\u0103.<\/li>\n<li><strong>Echipamente de precizie:<\/strong> extrem de rigid\u0103 pentru a preveni devierea aliniamentului.<\/li>\n<\/ul>\n<h2>5. Probleme cauzate de rigiditatea insuficient\u0103<\/h2>\n<h3>Viteze critice reduse<\/h3>\n<ul>\n<li>Vitezele critice scad p\u00e2n\u0103 \u00een domeniul de func\u021bionare.<\/li>\n<li>La viteze care ar trebui s\u0103 fie sigure apar vibra\u021bii puternice.<\/li>\n<li>Este posibil ca ma\u0219ina s\u0103 nu poat\u0103 atinge deloc viteza nominal\u0103.<\/li>\n<li>Solu\u021bia const\u0103 \u00een rigidizarea funda\u021biei sau \u00een limitarea vitezei.<\/li>\n<\/ul>\n<h3>Vibra\u021bii excesive<\/h3>\n<ul>\n<li>Mi\u0219carea funda\u021biei amplific\u0103 nivelul general de vibra\u021bii.<\/li>\n<li>Structura \u00een sine poate rezona.<\/li>\n<li>Vibra\u021biile se transmit c\u0103tre echipamentele din apropiere.<\/li>\n<li>\u00cendoirea repetat\u0103 poate provoca deterior\u0103ri structurale <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/fatigue\/\">oboseal\u0103<\/a> daune.<\/li>\n<\/ul>\n<h3>Instabilitatea aliniamentului<\/h3>\n<ul>\n<li>Echipamentul se deplaseaz\u0103 pe o baz\u0103 flexibil\u0103, astfel \u00eenc\u00e2t alinierea ob\u021binut\u0103 cu at\u00e2ta efort se pierde.<\/li>\n<li>Efectele legate de dilatarea termic\u0103 sunt amplificate.<\/li>\n<li>Varia\u021biile sarcinilor de proces determin\u0103 devierea aliniamentului.<\/li>\n<\/ul>\n<h2>6. Metode de \u00eembun\u0103t\u0103\u021bire<\/h2>\n<h3>Consolidarea funda\u021biilor din beton<\/h3>\n<ul>\n<li><strong>Ad\u0103uga\u021bi masa:<\/strong> m\u0103ri\u021bi dimensiunea sau grosimea funda\u021biei.<\/li>\n<li><strong>Consolida\u021bi:<\/strong> s\u0103 se adauge arm\u0103turi din o\u021bel sau s\u0103 se realizeze post-tensionarea.<\/li>\n<li><strong>Repair cracks:<\/strong> Injectarea cu r\u0103\u0219in\u0103 epoxidic\u0103 sau repararea betonului restabile\u0219te rigiditatea pierdut\u0103.<\/li>\n<li><strong>Extindere p\u00e2n\u0103 la roca de baz\u0103:<\/strong> pilonii sau chesoanele ajung la straturile de sol solide.<\/li>\n<\/ul>\n<h3>Rigidizarea pl\u0103cii de baz\u0103<\/h3>\n<ul>\n<li>Ad\u0103uga\u021bi \u00eent\u0103rituri sau nervuri la cadrul structural.<\/li>\n<li>M\u0103ri\u021bi grosimea pl\u0103cii de baz\u0103.<\/li>\n<li>\u00cembun\u0103t\u0103\u021bi\u021bi acoperirea \u0219i calitatea mortarului, elimin\u00e2nd golurile.<\/li>\n<li>Ad\u0103uga\u021bi elemente de rigidizare \u00eentre socluri.<\/li>\n<\/ul>\n<h3>\u00cembun\u0103t\u0103\u021birea solului<\/h3>\n<ul>\n<li>Stabilizarea solului sau injectarea sub presiune.<\/li>\n<li>Funda\u021bii ad\u00e2nci (pilo\u021bi) care ocolesc solul de slab\u0103 calitate din apropierea suprafe\u021bei.<\/li>\n<li>Compactarea sau densificarea.<\/li>\n<li>Consultan\u021b\u0103 geotehnic\u0103 pentru probleme grave legate de sol.<\/li>\n<\/ul>\n<h3>Solu\u021bii opera\u021bionale<\/h3>\n<ul>\n<li><strong>Modificarea vitezei:<\/strong> func\u021bioneaz\u0103 f\u0103r\u0103 a intra \u00een rezonan\u021b\u0103 cu funda\u021bia.<\/li>\n<li><strong>Izolarea \u00eempotriva vibra\u021biilor:<\/strong> instala\u021bi izolatoare pentru a decupla utilajul de funda\u021bie.<\/li>\n<li><strong>Echilibrarea:<\/strong> Toleran\u021bele de echilibrare mai stricte reduc problema la surs\u0103 \u2014 solu\u021bia la care apeleaz\u0103 de obicei echipele de \u00eentre\u021binere.<\/li>\n<li><strong>Amortizare:<\/strong> s\u0103 se aplice tratamente de amortizare la structur\u0103.<\/li>\n<\/ul>\n<p>Merit\u0103 s\u0103 ne oprim asupra acestei c\u0103i a echilibr\u0103rii, deoarece este adesea cea mai practic\u0103. Excita\u021bia rotorului <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/unbalance\/\">dezechilibru<\/a> este for\u021ba dinamic\u0103 la care trebuie s\u0103 reac\u021bioneze funda\u021bia; dac\u0103 reduci dezechilibrul, reduci \u0219i solicitarea asupra structurii. La fa\u021ba locului <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/echilibrarea-campului\/\">echilibrarea la fa\u021ba locului<\/a> poate astfel s\u0103 atenueze vibra\u021biile generate de funda\u021bie f\u0103r\u0103 a atinge deloc betonul \u2014 adesea fiind cea mai rapid\u0103 \u0219i mai ieftin\u0103 solu\u021bie de atenuare \u00een timp ce se planific\u0103 o solu\u021bie structural\u0103 pe termen lung.<\/p>\n<h2>7. Cele mai bune practici \u00een proiectarea funda\u021biilor<\/h2>\n<h3>Instala\u021bii noi<\/h3>\n<ul>\n<li>Efectua\u021bi o investiga\u021bie geotehnic\u0103 a condi\u021biilor solului.<\/li>\n<li>Calcula\u021bi masa \u0219i geometria funda\u021biei necesare.<\/li>\n<li>Include\u021bi o analiz\u0103 dinamic\u0103 a frecven\u021belor naturale \u0219i a r\u0103spunsului la dezechilibru.<\/li>\n<li>Proiecta\u021bi astfel \u00eenc\u00e2t rigiditatea \u0219i masa s\u0103 fie adecvate.<\/li>\n<li>Asigura\u021bi izolarea fa\u021b\u0103 de structurile adiacente.<\/li>\n<li>Prevede\u021bi m\u0103suri pentru chituire \u0219i aliniere.<\/li>\n<\/ul>\n<h3>Evaluarea funda\u021biilor existente<\/h3>\n<ul>\n<li>M\u0103sura\u021bi vibra\u021biile la funda\u021bie \u0219i compara\u021bi-le cu vibra\u021biile lag\u0103rului.<\/li>\n<li>Efectua\u021bi teste modale pentru a identifica frecven\u021bele naturale ale funda\u021biei.<\/li>\n<li>Verifica\u021bi dac\u0103 exist\u0103 fisuri, semne de uzur\u0103 \u0219i tas\u0103ri.<\/li>\n<li>Verifica\u021bi starea mortarului de sub pl\u0103cile de baz\u0103.<\/li>\n<li>Compara\u021bi valorile reale cu specifica\u021biile tehnice ini\u021biale.<\/li>\n<\/ul>\n<p>Rigiditatea funda\u021biei este un aspect u\u0219or de trecut cu vederea, dar esen\u021bial pentru performan\u021ba ma\u0219inilor rotative. O rigiditate adecvat\u0103 asigur\u0103 o distan\u021b\u0103 suficient\u0103 \u00eentre vitezele critice, men\u021bine alinierea stabil\u0103 \u0219i previne rezonan\u021ba; o rigiditate insuficient\u0103 poate face ca un echipament, altfel func\u021bional, s\u0103 func\u021bioneze neregulat \u0219i s\u0103 devin\u0103 nesigur. Considerarea funda\u021biei ca parte activ\u0103 a <a href=\"https:\/\/vibromera.eu\/ro\/glossary\/rotor-bearing-system\/\">sistem rotor-rulment<\/a> \u2014 m\u0103surat\u0103, evaluat\u0103 \u0219i \u00eentre\u021binut\u0103 la fel ca orice alt\u0103 component\u0103 \u2014 este semnul distinctiv al unui program riguros de gestionare a vibra\u021biilor.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/ro\/glossary\/\">\u2190 \u00cenapoi la indexul principal<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Afla\u021bi despre rigiditatea funda\u021biei, rezisten\u021ba structurilor de sus\u021binere a ma\u0219inilor la deformare, care afecteaz\u0103 critic vitezele critice, amplitudinile vibra\u021biilor \u0219i stabilitatea alinierii.<\/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\/ro\/wp-json\/wp\/v2\/glossary\/123","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/glossary\/123\/revisions"}],"predecessor-version":[{"id":101383,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/glossary\/123\/revisions\/101383"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/media?parent=123"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/categories?post=123"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/ro\/wp-json\/wp\/v2\/tags?post=123"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}