{"id":356401,"date":"2024-03-11T14:53:19","date_gmt":"2024-03-11T14:53:19","guid":{"rendered":"\/forum\/forums\/topic\/user-defined-hyperelastic-material-model-for-workbench-structural-simulation\/"},"modified":"2024-03-11T14:53:19","modified_gmt":"2024-03-11T14:53:19","slug":"user-defined-hyperelastic-material-model-for-workbench-structural-simulation","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/user-defined-hyperelastic-material-model-for-workbench-structural-simulation\/","title":{"rendered":"User-defined hyperelastic material model for workbench structural simulation"},"content":{"rendered":"<p>Hi all,<\/p>\n<p>I am simulating an anisotropic hyperelastic material using AHYPER exponential model, and implementing APDL commands in workbench simulation. The AHYPER constant is obtained by fitting experimental data. However, I cannot fit compression data well which causes the material model to be stiffer than expected.&nbsp;<\/p>\n<p>Is there any method for workbench simulation to is to apply multiple material models for one object? such as AHYPER for tension and another softer material model for compression by using APDL command?&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>Sincerely,<\/p>\n<p>Eric<\/p>\n","protected":false},"template":"","class_list":["post-356401","topic","type-topic","status-closed","hentry","topic-tag-ansysstructuresolveIssue-1","topic-tag-ansysworkbench-ansys-staticstructural","topic-tag-anisotropic-hyperelastic-2","topic-tag-ansys-apdl"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hi all,I am simulating an anisotropic hyperelastic material using AHYPER exponential model, and implementing APDL commands in workbench simulation. The AHYPER constant is obtained by fitting experimental data. 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Is there any method for workbench simulation to is to apply\" \/>\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\\\/user-defined-hyperelastic-material-model-for-workbench-structural-simulation\\\/#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-tag\\\/ansys-apdl\\\/#listItem\",\"name\":\"ansys-apdl\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/ansys-apdl\\\/#listItem\",\"position\":3,\"name\":\"ansys-apdl\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/ansys-apdl\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/user-defined-hyperelastic-material-model-for-workbench-structural-simulation\\\/#listItem\",\"name\":\"User-defined hyperelastic material model for workbench structural simulation\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/user-defined-hyperelastic-material-model-for-workbench-structural-simulation\\\/#listItem\",\"position\":4,\"name\":\"User-defined hyperelastic material model for workbench structural simulation\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/ansys-apdl\\\/#listItem\",\"name\":\"ansys-apdl\"}}]},{\"@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\\\/user-defined-hyperelastic-material-model-for-workbench-structural-simulation\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/user-defined-hyperelastic-material-model-for-workbench-structural-simulation\\\/\",\"name\":\"User-defined hyperelastic material model for workbench structural simulation | Ansys Learning Forum\",\"description\":\"Hi all,I am simulating an anisotropic hyperelastic material using AHYPER exponential model, and implementing APDL commands in workbench simulation. 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