


{"id":395274,"date":"2024-11-26T05:02:19","date_gmt":"2024-11-26T05:02:19","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/issue-with-mat_318-mat_tnm_polymer\/"},"modified":"2024-11-26T05:02:19","modified_gmt":"2024-11-26T05:02:19","slug":"issue-with-mat_318-mat_tnm_polymer","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/issue-with-mat_318-mat_tnm_polymer\/","title":{"rendered":"Issue with *MAT_318 : *MAT_TNM_POLYMER"},"content":{"rendered":"<p>&lt;p&gt;Hello,&lt;\/p&gt;&lt;p&gt;I am trying to set up an explicit dynamic simulation with the TNM material model. According to the Ls dyna keyword manual , volume 2 ( dev), this material model supports ELFORM 3, which, to the best of my knowledge, refers to 20 node hexahedral elements. However, when I run the .k file containing 20 node hexahedral element model in Ls Dyna R14 I get the following error : &ldquo;Material type 318 is not available for solid element type 3&#8243;. I previously tried 8 node and 27 node hexahedral elements but received the same error.&nbsp;&lt;\/p&gt;&lt;p&gt;Besides, I tried to assign the TNM model to the geometric part overwriting the default structural steel in Workbench Ls Dyna using the command snippet option. I am able to run the simulation without any error in this case but from analysis of the result it appears that the solver is not considering the TNM parameters I have assigned.&nbsp;&lt;\/p&gt;&lt;p&gt;I am not sure what I am missing&nbsp;here. Can anybody please point out the right way to implementing the TNM_Polymer model with Ls dyna? I would highly appreciate any suggestions or insights in this regard.&nbsp;&lt;\/p&gt;&lt;p&gt;Thanks in advance.&lt;\/p&gt;&lt;p&gt;Shahriar.&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;&nbsp; <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/26-11-2024-1732596760-Screenshot%202024-11-25%20232702.png\" alt=\"\" width=\"795\" height=\"228\" \/><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/26-11-2024-1732597257-mceclip0.png\" width=\"857\" height=\"447\" \/>&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-395274","topic","type-topic","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=\"Hello,I am trying to set up an explicit dynamic simulation with the TNM material model. According to the Ls dyna keyword manual , volume 2 ( dev), this material model supports ELFORM 3, which, to the best of my knowledge, refers to 20 node hexahedral elements. However, when I run the .k file containing 20\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/issue-with-mat_318-mat_tnm_polymer\/\" \/>\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=\"Issue with *MAT_318 : *MAT_TNM_POLYMER | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Hello,I am trying to set up an explicit dynamic simulation with the TNM material model. According to the Ls dyna keyword manual , volume 2 ( dev), this material model supports ELFORM 3, which, to the best of my knowledge, refers to 20 node hexahedral elements. However, when I run the .k file containing 20\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/issue-with-mat_318-mat_tnm_polymer\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2024-11-26T05:02:19+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2024-11-26T05:02:19+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Issue with *MAT_318 : *MAT_TNM_POLYMER | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Hello,I am trying to set up an explicit dynamic simulation with the TNM material model. According to the Ls dyna keyword manual , volume 2 ( dev), this material model supports ELFORM 3, which, to the best of my knowledge, refers to 20 node hexahedral elements. However, when I run the .k file containing 20\" \/>\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\\\/topic\\\/issue-with-mat_318-mat_tnm_polymer\\\/#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\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"position\":2,\"name\":\"Topics\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/issue-with-mat_318-mat_tnm_polymer\\\/#listItem\",\"name\":\"Issue with *MAT_318 : *MAT_TNM_POLYMER\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/issue-with-mat_318-mat_tnm_polymer\\\/#listItem\",\"position\":3,\"name\":\"Issue with *MAT_318 : *MAT_TNM_POLYMER\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"name\":\"Topics\"}}]},{\"@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\\\/topic\\\/issue-with-mat_318-mat_tnm_polymer\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/issue-with-mat_318-mat_tnm_polymer\\\/\",\"name\":\"Issue with *MAT_318 : *MAT_TNM_POLYMER | Ansys Learning Forum\",\"description\":\"Hello,I am trying to set up an explicit dynamic simulation with the TNM material model. 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