{"id":381533,"date":"2024-09-04T12:33:11","date_gmt":"2024-09-04T12:33:11","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/381533\/"},"modified":"2024-09-04T12:33:11","modified_gmt":"2024-09-04T12:33:11","slug":"381533","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/381533\/","title":{"rendered":"Reply To: Hyperelastic materials &#8211; input the strain energy density function"},"content":{"rendered":"<p>&lt;p class=&#8221;MsoNormal&#8221;&gt;The short answer is &lsquo;Yes&rsquo;.&nbsp; If you are referring to one of the standard strain energy density functions (See Section 4.6 of the MAPDL Material Reference Guide), you can enter the coefficients that define a specific function, via TB,HYPER,,, and TBDATA,,, commands.&lt;span style=&#8221;mso-spacerun: yes;&#8221;&gt;&nbsp; &lt;\/span&gt;This is assuming you already have these coefficients.&nbsp; Often folks have test data, but not coefficients. Hence, curve fitting is necessary to derive the coefficients for the strain energy density function of interest.&nbsp; &nbsp;If you are interested in a strain energy density expression that is not one of these standard options, then, you need to write your own routine via USERHYPER or USERMAT.&nbsp; However, even with a custom routine, you are probably still going to define the coefficients via TB,hyper,,,,user or TB,user,,,,&nbsp; to complete the customized expression.&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-381533","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=\"The short answer is \u2018Yes\u2019. If you are referring to one of the standard strain energy density functions (See Section 4.6 of the MAPDL Material Reference Guide), you can enter the coefficients that define a specific function, via TB,HYPER,,, and TBDATA,,, commands. This is assuming you already have these coefficients. Often folks\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/381533\/\" \/>\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: Hyperelastic materials \u2013 input the strain energy density function | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"The short answer is \u2018Yes\u2019. If you are referring to one of the standard strain energy density functions (See Section 4.6 of the MAPDL Material Reference Guide), you can enter the coefficients that define a specific function, via TB,HYPER,,, and TBDATA,,, commands. This is assuming you already have these coefficients. Often folks\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/381533\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2024-09-04T12:33:11+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2024-09-04T12:33:11+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Reply To: Hyperelastic materials \u2013 input the strain energy density function | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"The short answer is \u2018Yes\u2019. If you are referring to one of the standard strain energy density functions (See Section 4.6 of the MAPDL Material Reference Guide), you can enter the coefficients that define a specific function, via TB,HYPER,,, and TBDATA,,, commands. This is assuming you already have these coefficients. Often folks\" \/>\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\\\/381533\\\/#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\\\/381533\\\/#listItem\",\"name\":\"Reply To: Hyperelastic materials &#8211; input the strain energy density function\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/381533\\\/#listItem\",\"position\":2,\"name\":\"Reply To: Hyperelastic materials &#8211; input the strain energy density function\",\"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\\\/381533\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/381533\\\/\",\"name\":\"Reply To: Hyperelastic materials \\u2013 input the strain energy density function | Ansys Learning Forum\",\"description\":\"The short answer is \\u2018Yes\\u2019. If you are referring to one of the standard strain energy density functions (See Section 4.6 of the MAPDL Material Reference Guide), you can enter the coefficients that define a specific function, via TB,HYPER,,, and TBDATA,,, commands. This is assuming you already have these coefficients. 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If you are referring to one of the standard strain energy density functions (See Section 4.6 of the MAPDL Material Reference Guide), you can enter the coefficients that define a specific function, via TB,HYPER,,, and TBDATA,,, commands. This is assuming you already have these coefficients. 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If you are referring to one of the standard strain energy density functions (See Section 4.6 of the MAPDL Material Reference Guide), you can enter the coefficients that define a specific function, via TB,HYPER,,, and TBDATA,,, commands. This is assuming you already have these coefficients. Often folks","inLanguage":"en-US","isPartOf":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/#website"},"breadcrumb":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/381533\/#breadcrumblist"},"datePublished":"2024-09-04T12:33:11+00:00","dateModified":"2024-09-04T12:33:11+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: Hyperelastic materials \u2013 input the strain energy density function | Ansys Learning Forum","og:description":"The short answer is \u2018Yes\u2019. If you are referring to one of the standard strain energy density functions (See Section 4.6 of the MAPDL Material Reference Guide), you can enter the coefficients that define a specific function, via TB,HYPER,,, and TBDATA,,, commands. This is assuming you already have these coefficients. Often folks","og:url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/381533\/","article:published_time":"2024-09-04T12:33:11+00:00","article:modified_time":"2024-09-04T12:33:11+00:00","twitter:card":"summary_large_image","twitter:title":"Reply To: Hyperelastic materials \u2013 input the strain energy density function | Ansys Learning Forum","twitter:description":"The short answer is \u2018Yes\u2019. If you are referring to one of the standard strain energy density functions (See Section 4.6 of the MAPDL Material Reference Guide), you can enter the coefficients that define a specific function, via TB,HYPER,,, and TBDATA,,, commands. This is assuming you already have these coefficients. 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