{"id":192448,"date":"2021-11-02T08:05:32","date_gmt":"2021-11-02T08:05:32","guid":{"rendered":"\/forum\/forums\/reply\/192448\/"},"modified":"2021-11-02T08:11:52","modified_gmt":"2021-11-02T08:11:52","slug":"192448","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/192448\/","title":{"rendered":"Reply To: How to calculate eigen frequencies using analytical approach?"},"content":{"rendered":"<p>,I couldn&#8217;t understand what you mean by saying that Hooke&#8217;s law is valid on local scale since the material remains linear. What do you mean by local scale? And you also said that for the global structure, Hooke&#8217;s law is not valid if force-displacement curve is not linear when Large Deflection = ON. If is not valid on a global scale, then how can it be valid for a local scale?<br \/>\nSo what does ANSYS consider? Does ANSYS consider a linear relation between stress-strain (i.e. Hooke&#8217;s law) to calculate the stresses from strains within an element, or it does not and uses some other formulation to do so when Large Deflection is turned ON?<\/p>\n","protected":false},"template":"","class_list":["post-192448","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\",I couldn&#039;t understand what you mean by saying that Hooke&#039;s law is valid on local scale since the material remains linear. What do you mean by local scale? And you also said that for the global structure, Hooke&#039;s law is not valid if force-displacement curve is not linear when Large Deflection = ON. If is\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/192448\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Ansys Learning Forum | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Reply To: How to calculate eigen frequencies using analytical approach? | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\",I couldn&#039;t understand what you mean by saying that Hooke&#039;s law is valid on local scale since the material remains linear. What do you mean by local scale? And you also said that for the global structure, Hooke&#039;s law is not valid if force-displacement curve is not linear when Large Deflection = ON. If is\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/192448\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2021-11-02T08:05:32+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2021-11-02T08:11:52+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Reply To: How to calculate eigen frequencies using analytical approach? | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\",I couldn&#039;t understand what you mean by saying that Hooke&#039;s law is valid on local scale since the material remains linear. What do you mean by local scale? And you also said that for the global structure, Hooke&#039;s law is not valid if force-displacement curve is not linear when Large Deflection = ON. If is\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/192448\\\/#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/192448\\\/#listItem\",\"name\":\"Reply To: How to calculate eigen frequencies using analytical approach?\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/192448\\\/#listItem\",\"position\":2,\"name\":\"Reply To: How to calculate eigen frequencies using analytical approach?\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"name\":\"Home\"}}]},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#organization\",\"name\":\"Ansys Learning Forum\",\"description\":\"Ansys Innovation Space\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/192448\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/192448\\\/\",\"name\":\"Reply To: How to calculate eigen frequencies using analytical approach? | Ansys Learning Forum\",\"description\":\",I couldn't understand what you mean by saying that Hooke's law is valid on local scale since the material remains linear. What do you mean by local scale? And you also said that for the global structure, Hooke's law is not valid if force-displacement curve is not linear when Large Deflection = ON. If is\",\"inLanguage\":\"en-US\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#website\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/192448\\\/#breadcrumblist\"},\"datePublished\":\"2021-11-02T08:05:32+00:00\",\"dateModified\":\"2021-11-02T08:11:52+00:00\"},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#website\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/\",\"name\":\"Ansys Learning Forum\",\"description\":\"Ansys Innovation Space\",\"inLanguage\":\"en-US\",\"publisher\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#organization\"}}]}\n\t\t<\/script>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"Reply To: How to calculate eigen frequencies using analytical approach? | Ansys Learning Forum","description":",I couldn't understand what you mean by saying that Hooke's law is valid on local scale since the material remains linear. What do you mean by local scale? And you also said that for the global structure, Hooke's law is not valid if force-displacement curve is not linear when Large Deflection = ON. If is","canonical_url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/192448\/","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"BreadcrumbList","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/192448\/#breadcrumblist","itemListElement":[{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum#listItem","position":1,"name":"Home","item":"https:\/\/innovationspace.ansys.com\/forum","nextItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/192448\/#listItem","name":"Reply To: How to calculate eigen frequencies using analytical approach?"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/192448\/#listItem","position":2,"name":"Reply To: How to calculate eigen frequencies using analytical approach?","previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum#listItem","name":"Home"}}]},{"@type":"Organization","@id":"https:\/\/innovationspace.ansys.com\/forum\/#organization","name":"Ansys Learning Forum","description":"Ansys Innovation Space","url":"https:\/\/innovationspace.ansys.com\/forum\/"},{"@type":"WebPage","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/192448\/#webpage","url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/192448\/","name":"Reply To: How to calculate eigen frequencies using analytical approach? | Ansys Learning Forum","description":",I couldn't understand what you mean by saying that Hooke's law is valid on local scale since the material remains linear. What do you mean by local scale? And you also said that for the global structure, Hooke's law is not valid if force-displacement curve is not linear when Large Deflection = ON. If is","inLanguage":"en-US","isPartOf":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/#website"},"breadcrumb":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/192448\/#breadcrumblist"},"datePublished":"2021-11-02T08:05:32+00:00","dateModified":"2021-11-02T08:11:52+00:00"},{"@type":"WebSite","@id":"https:\/\/innovationspace.ansys.com\/forum\/#website","url":"https:\/\/innovationspace.ansys.com\/forum\/","name":"Ansys Learning Forum","description":"Ansys Innovation Space","inLanguage":"en-US","publisher":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/#organization"}}]},"og:locale":"en_US","og:site_name":"Ansys Learning Forum | Ansys Innovation Space","og:type":"article","og:title":"Reply To: How to calculate eigen frequencies using analytical approach? | Ansys Learning Forum","og:description":",I couldn't understand what you mean by saying that Hooke's law is valid on local scale since the material remains linear. What do you mean by local scale? And you also said that for the global structure, Hooke's law is not valid if force-displacement curve is not linear when Large Deflection = ON. If is","og:url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/192448\/","article:published_time":"2021-11-02T08:05:32+00:00","article:modified_time":"2021-11-02T08:11:52+00:00","twitter:card":"summary_large_image","twitter:title":"Reply To: How to calculate eigen frequencies using analytical approach? | Ansys Learning Forum","twitter:description":",I couldn't understand what you mean by saying that Hooke's law is valid on local scale since the material remains linear. What do you mean by local scale? And you also said that for the global structure, Hooke's law is not valid if force-displacement curve is not linear when Large Deflection = ON. If is"},"aioseo_meta_data":{"post_id":"192448","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"content","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":true,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"limit_modified_date":false,"created":"2024-10-24 17:37:08","updated":"2026-09-07 00:15:49","ai":null,"breadcrumb_settings":null,"seo_analyzer_scan_date":null},"aioseo_breadcrumb":"<div class=\"aioseo-breadcrumbs\"><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/innovationspace.ansys.com\/forum\" title=\"Home\">Home<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\tReply To: How to calculate eigen frequencies using analytical approach?\n\t\t<\/span><\/div>","aioseo_breadcrumb_json":[{"label":"Home","link":"https:\/\/innovationspace.ansys.com\/forum"},{"label":"Reply To: How to calculate eigen frequencies using analytical approach?","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/192448\/"}],"acf":[],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/192448","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/reply"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/192448\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=192448"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}