{"id":393079,"date":"2024-11-07T01:26:36","date_gmt":"2024-11-07T01:26:36","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/creep-strain-energy-density-user-defined-results\/"},"modified":"2024-11-07T01:26:36","modified_gmt":"2024-11-07T01:26:36","slug":"creep-strain-energy-density-user-defined-results","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/creep-strain-energy-density-user-defined-results\/","title":{"rendered":"Creep Strain Energy Density User Defined Results"},"content":{"rendered":"<p>&lt;p&gt;Hi,&lt;\/p&gt;&lt;p&gt;In Ansys Mechanical, nlcrwk and SENDCREEP are two expressions that calculate the creep strain energy density.&lt;\/p&gt;&lt;p&gt;However, these two expressions calculated different results as shown below.&lt;\/p&gt;&lt;p&gt;What is the difference between these two functions?&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/07-11-2024-1730942376-mceclip1.png\" width=\"728\" height=\"170\" \/>&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/07-11-2024-1730942319-mceclip0.png\" width=\"730\" height=\"170\" \/>&lt;\/p&gt;&lt;p&gt;In another case, I managed to use the SENDCREEP expression but I will get an error if I use the nlcrwk expression.&lt;\/p&gt;&lt;p&gt;Please see below the error.&lt;\/p&gt;&lt;p&gt;What should I do to fix this?&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/07-11-2024-1730942667-mceclip2.png\" width=\"327\" height=\"200\" \/>&lt;\/p&gt;&lt;p&gt;For added context, I am trying to do a solder joint reliability study.&lt;\/p&gt;&lt;p&gt;Let me know if more information is needed.&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-393079","topic","type-topic","status-publish","hentry","topic-tag-creep-analysis-1","topic-tag-solder-joint"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hi,In Ansys Mechanical, nlcrwk and SENDCREEP are two expressions that calculate the creep strain energy density.However, these two expressions calculated different results as shown below.What is the difference between these two functions?In another case, I managed to use the SENDCREEP expression but I will get an error if I use the nlcrwk expression.Please see below\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/creep-strain-energy-density-user-defined-results\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta 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