{"id":23069,"date":"2019-12-18T10:08:54","date_gmt":"2019-12-18T10:08:54","guid":{"rendered":"https:\/\/www.simscale.com\/?post_type=epkb_post_type_1&#038;p=23069"},"modified":"2021-03-28T11:22:41","modified_gmt":"2021-03-28T11:22:41","slug":"when-do-i-need-a-nonlinear-static-analysis","status":"publish","type":"epkb_post_type_1","link":"https:\/\/www.simscale.com\/knowledge-base\/when-do-i-need-a-nonlinear-static-analysis\/","title":{"rendered":"When Do I Need a Nonlinear Static Analysis?"},"content":{"rendered":"\n\t\t<div id=\"eckb-article-page-container-v2\" class=\"eckb-article-page-content-counter eckb_ap_active_theme_simscale \" data-mobile_breakpoint=\"768\">    \t\t\t\t<a href=\"#eckb-article-content\" class=\"eckb-skip-link eckb-screen-reader-text\">Skip to main content<\/a>   <div id=\"eckb-article-header\" ><\/div>\n\t\t\t<div id=\"eckb-article-body\">  <div id=\"eckb-article-left-sidebar\" ><\/div>\n\t\t        <article id=\"eckb-article-content\" tabindex=\"-1\" data-article-id=\"23069\" >                        <div id=\"eckb-article-content-header-v2\" ><div id=\"eckb-article-content-header-row-3\"><div class=\"eckb-article-content-header-row-left-group\">\n\t\t<div class=\"eckb-article-content-created-date-container\">\t\t<span class=\"eckb-meta-data-feature-icon epkbfa epkbfa-calendar\"><\/span><span class=\"eckb-meta-data-feature-text\">Created On<\/span><span class=\"eckb-meta-data-feature-value\"><time class=\"entry-date\" datetime=\"2019-12-18T10:08:54+00:00\">December 18, 2019<\/time><\/span>\t\t<\/div> \n\t\t<div class=\"eckb-article-content-author-container\">\t\t<span class=\"eckb-meta-data-feature-icon epkbfa epkbfa-user\"><\/span><span class=\"eckb-meta-data-feature-text\">by<\/span><span class=\"eckb-meta-data-feature-value\">David Short<\/span>\t\t<\/div> <\/div><\/div><\/div><div id=\"eckb-article-content-body\" >\n<p class=\"wp-block-paragraph\">SimScale provides the capabilities to consider nonlinear behaviour in your structural analysis. But when is nonlinear analysis necessary? This article answers this very question.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"solution\" >Solution<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A nonlinear static analysis is required for any static application in which the stiffness of the entire structure changes during the loading scenario. The simulation must be solved incrementally to account for the stiffness changes.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">There are three situations in which the stiffness of a structure changes,<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>The deformation of the structure is so large that equilibrium must be considered at the deformed position rather than the original position.<\/li><li>The material&#8217;s mechanical properties change during loading, in other words the internal stress does not remain directly proportional to the internal strain caused by the external load. This is the case for materials that display plastic or hyper-elastic behaviour. <\/li><li>Changes in physical contacts allow stress transfer between structural components.<\/li><\/ol>\n\n\n\n<p class=\"wp-block-paragraph\"> <div class=\"hw-note hw-note--info mathjax\">    <div class=\"hw-note__title\">        <p><i class=\"fa fa-exclamation-circle\" aria-hidden=\"true\"><\/i> Important Information<\/p>    <\/div>    <div class=\"hw-note__body\">        <p>If none of the above suggestions did solve your problem, then please post the issue on our <a href=\"https:\/\/www.simscale.com\/forum\/\">forum<\/a> or <a href=\"mailto:support@simscale.com\">contact us<\/a>.<\/p>    <\/div><\/div> <\/p>\n<\/div><div id=\"eckb-article-content-footer\" ><div class=\"eckb-tag-container\"  ><span class=\"eckb-tag-description\">Tags:  <\/span><ul class=\"eckb-tag-list\"><li><a href=\"https:\/\/www.simscale.com\/knowledge-base\/tag\/fea\/\" rel=\"tag\">FEA<\/a><\/li><li><a href=\"https:\/\/www.simscale.com\/knowledge-base\/tag\/fem\/\" rel=\"tag\">FEM<\/a><\/li><li><a href=\"https:\/\/www.simscale.com\/knowledge-base\/tag\/non-linear\/\" rel=\"tag\">Non-linear<\/a><\/li><\/ul><\/div><\/div>\n\t\t        <\/article><!-- \/#eckb-article-content -->     <div id=\"eckb-article-right-sidebar\" ><\/div>\n\t\t\t<\/div><!-- \/#eckb-article-body -->              <div id=\"eckb-article-footer\" ><\/div>\n\t\t<\/div><!-- \/#eckb-article-page-container-v2 -->\n\n\t\t<style id=\"eckb-article-styles\" type=\"text\/css\">@media only screen and (min-width:768px){#eckb-article-page-container-v2 #eckb-article-body #eckb-article-content #eckb-article-content-header-v2 #eckb-article-content-header-row-1,#eckb-article-page-container-v2 #eckb-article-body #eckb-article-content #eckb-article-content-header-v2 #eckb-article-content-header-row-2,#eckb-article-page-container-v2 #eckb-article-body #eckb-article-content #eckb-article-content-header-v2 #eckb-article-content-header-row-3,#eckb-article-page-container-v2 #eckb-article-body #eckb-article-content #eckb-article-content-header-v2 #eckb-article-content-header-row-4,#eckb-article-page-container-v2 #eckb-article-body #eckb-article-content #eckb-article-content-header-v2 #eckb-article-content-header-row-5{flex-direction:row;}}#eckb-article-content-header-row-3{margin-bottom:32px;}#eckb-article-content-header-row-3 .eckb-article-content-header-row-left-group,#eckb-article-content-header-row-3 .eckb-article-content-header-row-right-group{align-items:flex-end;}<\/style>   ","protected":false},"excerpt":{"rendered":"<p>Skip to main content Created OnDecember 18, 2019 byDavid Short SimScale provides the capabilities to consider nonlinear...","protected":false},"author":103,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_crdt_document":"","inline_featured_image":false,"footnotes":""},"epkb_post_type_1_category":[1779],"epkb_post_type_1_tag":[1870,1874,1872],"class_list":["post-23069","epkb_post_type_1","type-epkb_post_type_1","status-publish","hentry","epkb_post_type_1_category-structural-analysis","epkb_post_type_1_tag-fea","epkb_post_type_1_tag-fem","epkb_post_type_1_tag-non-linear"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.simscale.com\/wp-json\/wp\/v2\/epkb_post_type_1\/23069","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.simscale.com\/wp-json\/wp\/v2\/epkb_post_type_1"}],"about":[{"href":"https:\/\/www.simscale.com\/wp-json\/wp\/v2\/types\/epkb_post_type_1"}],"author":[{"embeddable":true,"href":"https:\/\/www.simscale.com\/wp-json\/wp\/v2\/users\/103"}],"replies":[{"embeddable":true,"href":"https:\/\/www.simscale.com\/wp-json\/wp\/v2\/comments?post=23069"}],"version-history":[{"count":0,"href":"https:\/\/www.simscale.com\/wp-json\/wp\/v2\/epkb_post_type_1\/23069\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.simscale.com\/wp-json\/wp\/v2\/media?parent=23069"}],"wp:term":[{"taxonomy":"epkb_post_type_1_category","embeddable":true,"href":"https:\/\/www.simscale.com\/wp-json\/wp\/v2\/epkb_post_type_1_category?post=23069"},{"taxonomy":"epkb_post_type_1_tag","embeddable":true,"href":"https:\/\/www.simscale.com\/wp-json\/wp\/v2\/epkb_post_type_1_tag?post=23069"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}