{"id":162129,"date":"2023-01-25T07:34:24","date_gmt":"2023-01-25T07:34:24","guid":{"rendered":"\/knowledge\/forums\/topic\/q-why-does-nonlinear-adaptive-remeshing-nlad-not-resolve-a-metal-plasticity-application-failing-to-convergence-with-element-distortion-error\/"},"modified":"2023-07-31T12:36:49","modified_gmt":"2023-07-31T12:36:49","slug":"q-why-does-nonlinear-adaptive-remeshing-nlad-not-resolve-a-metal-plasticity-application-failing-to-convergence-with-element-distortion-error","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/q-why-does-nonlinear-adaptive-remeshing-nlad-not-resolve-a-metal-plasticity-application-failing-to-convergence-with-element-distortion-error\/","title":{"rendered":"Q.  Why does nonlinear adaptive remeshing (NLAD) not resolve a metal plasticity application failing to convergence with element distortion error?"},"content":{"rendered":"<p>A.  In this particular case, the issue appeared to be that the plastic strain is beyond the last data point of the KINH curve resulting in zero stiffness.  NLAD only makes this worse.  The solution was to switch to BKIN and define a small nonzero tangent modulus for stability.  With this change, the model solved without the need for NLAD.<\/p>\n","protected":false},"template":"","class_list":["post-162129","topic","type-topic","status-publish","hentry","topic-tag-18-2","topic-tag-materials","topic-tag-mechanical","topic-tag-nlad","topic-tag-plasticity","topic-tag-structural-mechanics"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"A. In this particular case, the issue appeared to be that the plastic strain is beyond the last data point of the KINH curve resulting in zero stiffness. NLAD only makes this worse. The solution was to switch to BKIN and define a small nonzero tangent modulus for stability. With this change, the model solved\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/q-why-does-nonlinear-adaptive-remeshing-nlad-not-resolve-a-metal-plasticity-application-failing-to-convergence-with-element-distortion-error\/\" \/>\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 Knowledge | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Q. Why does nonlinear adaptive remeshing (NLAD) not resolve a metal plasticity application failing to convergence with element distortion error? | Ansys Knowledge\" \/>\n\t\t<meta property=\"og:description\" content=\"A. In this particular case, the issue appeared to be that the plastic strain is beyond the last data point of the KINH curve resulting in zero stiffness. NLAD only makes this worse. The solution was to switch to BKIN and define a small nonzero tangent modulus for stability. With this change, the model solved\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/q-why-does-nonlinear-adaptive-remeshing-nlad-not-resolve-a-metal-plasticity-application-failing-to-convergence-with-element-distortion-error\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2023-01-25T07:34:24+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2023-07-31T12:36:49+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Q. Why does nonlinear adaptive remeshing (NLAD) not resolve a metal plasticity application failing to convergence with element distortion error? | Ansys Knowledge\" \/>\n\t\t<meta name=\"twitter:description\" content=\"A. In this particular case, the issue appeared to be that the plastic strain is beyond the last data point of the KINH curve resulting in zero stiffness. NLAD only makes this worse. The solution was to switch to BKIN and define a small nonzero tangent modulus for stability. With this change, the model solved\" \/>\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\\\/knowledge\\\/forums\\\/topic\\\/q-why-does-nonlinear-adaptive-remeshing-nlad-not-resolve-a-metal-plasticity-application-failing-to-convergence-with-element-distortion-error\\\/#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge#listItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/topics\\\/#listItem\",\"position\":2,\"name\":\"Topics\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/topics\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic-tag\\\/structural-mechanics\\\/#listItem\",\"name\":\"structural-mechanics\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic-tag\\\/structural-mechanics\\\/#listItem\",\"position\":3,\"name\":\"structural-mechanics\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic-tag\\\/structural-mechanics\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/q-why-does-nonlinear-adaptive-remeshing-nlad-not-resolve-a-metal-plasticity-application-failing-to-convergence-with-element-distortion-error\\\/#listItem\",\"name\":\"Q.  Why does nonlinear adaptive remeshing (NLAD) not resolve a metal plasticity application failing to convergence with element distortion error?\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/q-why-does-nonlinear-adaptive-remeshing-nlad-not-resolve-a-metal-plasticity-application-failing-to-convergence-with-element-distortion-error\\\/#listItem\",\"position\":4,\"name\":\"Q.  Why does nonlinear adaptive remeshing (NLAD) not resolve a metal plasticity application failing to convergence with element distortion error?\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic-tag\\\/structural-mechanics\\\/#listItem\",\"name\":\"structural-mechanics\"}}]},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/#organization\",\"name\":\"Ansys Knowledge\",\"description\":\"Ansys Innovation Space\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/q-why-does-nonlinear-adaptive-remeshing-nlad-not-resolve-a-metal-plasticity-application-failing-to-convergence-with-element-distortion-error\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/q-why-does-nonlinear-adaptive-remeshing-nlad-not-resolve-a-metal-plasticity-application-failing-to-convergence-with-element-distortion-error\\\/\",\"name\":\"Q. Why does nonlinear adaptive remeshing (NLAD) not resolve a metal plasticity application failing to convergence with element distortion error? | Ansys Knowledge\",\"description\":\"A. In this particular case, the issue appeared to be that the plastic strain is beyond the last data point of the KINH curve resulting in zero stiffness. NLAD only makes this worse. The solution was to switch to BKIN and define a small nonzero tangent modulus for stability. With this change, the model solved\",\"inLanguage\":\"en-US\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/#website\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/q-why-does-nonlinear-adaptive-remeshing-nlad-not-resolve-a-metal-plasticity-application-failing-to-convergence-with-element-distortion-error\\\/#breadcrumblist\"},\"datePublished\":\"2023-01-25T07:34:24+00:00\",\"dateModified\":\"2023-07-31T12:36:49+00:00\"},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/#website\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/\",\"name\":\"Ansys Knowledge\",\"description\":\"Ansys Innovation Space\",\"inLanguage\":\"en-US\",\"publisher\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/#organization\"}}]}\n\t\t<\/script>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"Q. Why does nonlinear adaptive remeshing (NLAD) not resolve a metal plasticity application failing to convergence with element distortion error? | Ansys Knowledge","description":"A. In this particular case, the issue appeared to be that the plastic strain is beyond the last data point of the KINH curve resulting in zero stiffness. NLAD only makes this worse. The solution was to switch to BKIN and define a small nonzero tangent modulus for stability. With this change, the model solved","canonical_url":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/q-why-does-nonlinear-adaptive-remeshing-nlad-not-resolve-a-metal-plasticity-application-failing-to-convergence-with-element-distortion-error\/","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"BreadcrumbList","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/q-why-does-nonlinear-adaptive-remeshing-nlad-not-resolve-a-metal-plasticity-application-failing-to-convergence-with-element-distortion-error\/#breadcrumblist","itemListElement":[{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge#listItem","position":1,"name":"Home","item":"https:\/\/innovationspace.ansys.com\/knowledge","nextItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/topics\/#listItem","name":"Topics"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/topics\/#listItem","position":2,"name":"Topics","item":"https:\/\/innovationspace.ansys.com\/knowledge\/topics\/","nextItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic-tag\/structural-mechanics\/#listItem","name":"structural-mechanics"},"previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge#listItem","name":"Home"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic-tag\/structural-mechanics\/#listItem","position":3,"name":"structural-mechanics","item":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic-tag\/structural-mechanics\/","nextItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/q-why-does-nonlinear-adaptive-remeshing-nlad-not-resolve-a-metal-plasticity-application-failing-to-convergence-with-element-distortion-error\/#listItem","name":"Q.  Why does nonlinear adaptive remeshing (NLAD) not resolve a metal plasticity application failing to convergence with element distortion error?"},"previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/topics\/#listItem","name":"Topics"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/q-why-does-nonlinear-adaptive-remeshing-nlad-not-resolve-a-metal-plasticity-application-failing-to-convergence-with-element-distortion-error\/#listItem","position":4,"name":"Q.  Why does nonlinear adaptive remeshing (NLAD) not resolve a metal plasticity application failing to convergence with element distortion error?","previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic-tag\/structural-mechanics\/#listItem","name":"structural-mechanics"}}]},{"@type":"Organization","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/#organization","name":"Ansys Knowledge","description":"Ansys Innovation Space","url":"https:\/\/innovationspace.ansys.com\/knowledge\/"},{"@type":"WebPage","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/q-why-does-nonlinear-adaptive-remeshing-nlad-not-resolve-a-metal-plasticity-application-failing-to-convergence-with-element-distortion-error\/#webpage","url":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/q-why-does-nonlinear-adaptive-remeshing-nlad-not-resolve-a-metal-plasticity-application-failing-to-convergence-with-element-distortion-error\/","name":"Q. Why does nonlinear adaptive remeshing (NLAD) not resolve a metal plasticity application failing to convergence with element distortion error? | Ansys Knowledge","description":"A. In this particular case, the issue appeared to be that the plastic strain is beyond the last data point of the KINH curve resulting in zero stiffness. NLAD only makes this worse. The solution was to switch to BKIN and define a small nonzero tangent modulus for stability. With this change, the model solved","inLanguage":"en-US","isPartOf":{"@id":"https:\/\/innovationspace.ansys.com\/knowledge\/#website"},"breadcrumb":{"@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/q-why-does-nonlinear-adaptive-remeshing-nlad-not-resolve-a-metal-plasticity-application-failing-to-convergence-with-element-distortion-error\/#breadcrumblist"},"datePublished":"2023-01-25T07:34:24+00:00","dateModified":"2023-07-31T12:36:49+00:00"},{"@type":"WebSite","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/#website","url":"https:\/\/innovationspace.ansys.com\/knowledge\/","name":"Ansys Knowledge","description":"Ansys Innovation Space","inLanguage":"en-US","publisher":{"@id":"https:\/\/innovationspace.ansys.com\/knowledge\/#organization"}}]},"og:locale":"en_US","og:site_name":"Ansys Knowledge | Ansys Innovation Space","og:type":"article","og:title":"Q. Why does nonlinear adaptive remeshing (NLAD) not resolve a metal plasticity application failing to convergence with element distortion error? | Ansys Knowledge","og:description":"A. In this particular case, the issue appeared to be that the plastic strain is beyond the last data point of the KINH curve resulting in zero stiffness. NLAD only makes this worse. The solution was to switch to BKIN and define a small nonzero tangent modulus for stability. With this change, the model solved","og:url":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/q-why-does-nonlinear-adaptive-remeshing-nlad-not-resolve-a-metal-plasticity-application-failing-to-convergence-with-element-distortion-error\/","article:published_time":"2023-01-25T07:34:24+00:00","article:modified_time":"2023-07-31T12:36:49+00:00","twitter:card":"summary_large_image","twitter:title":"Q. Why does nonlinear adaptive remeshing (NLAD) not resolve a metal plasticity application failing to convergence with element distortion error? | Ansys Knowledge","twitter:description":"A. In this particular case, the issue appeared to be that the plastic strain is beyond the last data point of the KINH curve resulting in zero stiffness. NLAD only makes this worse. The solution was to switch to BKIN and define a small nonzero tangent modulus for stability. With this change, the model solved"},"aioseo_meta_data":{"post_id":"162129","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":"default","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":false,"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":"2025-10-17 19:41:11","updated":"2026-07-29 07:02:34","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\/knowledge\" title=\"Home\">Home<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/innovationspace.ansys.com\/knowledge\/topics\/\" title=\"Topics\">Topics<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic-tag\/structural-mechanics\/\" title=\"structural-mechanics\">structural-mechanics<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\tQ.  Why does nonlinear adaptive remeshing (NLAD) not resolve a metal plasticity application failing to convergence with element distortion error?\n\t\t<\/span><\/div>","aioseo_breadcrumb_json":[{"label":"Home","link":"https:\/\/innovationspace.ansys.com\/knowledge"},{"label":"Topics","link":"https:\/\/innovationspace.ansys.com\/knowledge\/topics\/"},{"label":"structural-mechanics","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic-tag\/structural-mechanics\/"},{"label":"Q.  Why does nonlinear adaptive remeshing (NLAD) not resolve a metal plasticity application failing to convergence with element distortion error?","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/q-why-does-nonlinear-adaptive-remeshing-nlad-not-resolve-a-metal-plasticity-application-failing-to-convergence-with-element-distortion-error\/"}],"acf":[],"custom_fields":[{"0":{"_wp_page_template":["default"],"_bbp_forum_id":["27814"],"_bbp_last_active_time":["1-24-2023  20:20:04"],"_bbp_author_ip":["23.56.168.180"],"_btv_view_count":["1384"],"siebel_km_number":["2052721"],"product_version":["18.2"],"km_published_date":["2017-12-30T00:11:39.000Z"],"family":["Structural Mechanics"],"application_name":["Mechanical"]},"test":"articlesansys-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/162129","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/162129\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/media?parent=162129"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}