{"id":457894,"date":"2026-05-08T19:13:32","date_gmt":"2026-05-08T19:13:32","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ls-dyna-2025-r2-user-defined-material-and-user-element-package\/"},"modified":"2026-05-08T19:13:32","modified_gmt":"2026-05-08T19:13:32","slug":"ls-dyna-2025-r2-user-defined-material-and-user-element-package","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ls-dyna-2025-r2-user-defined-material-and-user-element-package\/","title":{"rendered":"LS-DYNA 2025 R2 User-Defined Material and User-Element Package"},"content":{"rendered":"<p>&lt;p&gt;&lt;span data-olk-copy-source=&#8221;MessageBody&#8221;&gt;Hi,&lt;br&gt;&lt;br&gt;I have Ansys LS-DYNA 2025 R2 installed on a Windows workstation.&nbsp;&lt;\/span&gt;&lt;\/p&gt;&lt;div class=&#8221;x_elementToProof&#8221; data-olk-copy-source=&#8221;MessageBody&#8221;&gt;Currently, I am developing a custom phase-field fracture model in LS-DYNA, instead of using any inbuilt material models. Could anyone please help me with how to get (or whom to reach out at Ansys to get)&nbsp;the compatible\/matching&nbsp;<strong>LS-DYNA 2025 R2 \/ v252 Windows x64 user-defined material <\/strong>and <strong>user-defined element object\/static-linking package<\/strong>, including:&lt;\/div&gt;&lt;ul data-spread=&#8221;false&#8221;&gt;<\/p>\n<li><code>dyn21.F<\/code>&nbsp;\/&nbsp;<code>dyn21.f<\/code>&nbsp;for user-defined materials<\/li>\n<li><code>dyn21b.F<\/code>&nbsp;\/&nbsp;<code>dyn21b.f<\/code>&nbsp;for user-defined elements<\/li>\n<li>include files<\/li>\n<li>object\/static libraries<\/li>\n<li>Makefile or Windows build scripts<\/li>\n<li>example UMAT and user-element source files<\/li>\n<li>example keyword decks for user-defined elements<\/li>\n<li>recommended compiler and linker instructions<\/li>\n<\/ul>\n<p>&lt;div class=&#8221;x_elementToProof&#8221;&gt;Also, my current installation is using the&nbsp;<strong>SMP single-precision executable<\/strong>, but the phase-field fracture problems may become computationally heavy. Please also advise whether I should request or use:&lt;\/div&gt;&lt;ul data-spread=&#8221;false&#8221;&gt;<\/p>\n<li>SMP single precision, SMP double precision, or MPP double precision<\/li>\n<li>Windows MPP support, if available<\/li>\n<li>MS-MPI or another MPI package<\/li>\n<li>Intel oneAPI Fortran \/ Intel Fortran compiler version<\/li>\n<li>Microsoft Visual Studio \/ MSVC version<\/li>\n<li>Intel MKL \/ BLAS \/ LAPACK support, if needed for solving the equations<\/li>\n<\/ul>\n<p>&lt;div class=&#8221;x_elementToProof&#8221;&gt;Please let me know which exact package is compatible with my&nbsp;<strong>LS-DYNA 2025 R2 \/ v252<\/strong>&nbsp;installation and what additional software I need to install before compiling a custom executable.&lt;\/div&gt;&lt;div class=&#8221;x_elementToProof&#8221;&gt;Also, if Ansys has any tutorials, documentation, examples, training material, or technical notes on using the LS-DYNA user-defined material and user-defined element packages, especially for compiling custom executables on Windows, I would appreciate it if you could share them.&lt;br&gt;&lt;br&gt;&lt;\/div&gt;&lt;div class=&#8221;x_elementToProof&#8221;&gt;Thank you.&lt;\/div&gt;&lt;div class=&#8221;x_elementToProof&#8221;&gt;Sincerely,&lt;br&gt;&lt;br&gt;Umar&lt;br&gt;PhD student @GeorgiaTech&lt;\/div&gt;<\/p>\n","protected":false},"template":"","class_list":["post-457894","topic","type-topic","status-publish","hentry","topic-tag-user-defined-1","topic-tag-user-defined-functions","topic-tag-userdefinedfunction-1","topic-tag-userelem-usermat","topic-tag-usermat","topic-tag-usermat-coding-1"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27814"],"_bbp_topic_id":["457894"],"_bbp_subscription":["685452","58821"],"_bbp_author_ip":["2610:148:1f01:8e00::10a"],"_bbp_last_reply_id":["457921"],"_bbp_last_active_id":["457921"],"_bbp_last_active_time":["2026-05-11 06:43:58"],"_bbp_reply_count":["1"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["2"],"_bbp_engagement":["685452","58821"],"_btv_view_count":["71"],"_bbp_topic_status":["unanswered"]},"test":"ukhayaz3gatech-edu"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/457894","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/457894\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=457894"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}