{"id":425624,"date":"2025-03-13T21:47:29","date_gmt":"2025-03-13T21:47:29","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/defining-transformation-temperatures-for-shape-memory-alloys\/"},"modified":"2025-03-13T21:47:29","modified_gmt":"2025-03-13T21:47:29","slug":"defining-transformation-temperatures-for-shape-memory-alloys","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/defining-transformation-temperatures-for-shape-memory-alloys\/","title":{"rendered":"Defining Transformation Temperatures for Shape Memory Alloys"},"content":{"rendered":"<p>&lt;p&gt;Hi,&lt;\/p&gt;&lt;p&gt;I need to define specific transformation temperatures for the martensite and austenite phase transformations of nitinol. When I use the custom material model to implement martensite start temperature, martensite finish temperature, austenite start temperature, and austenite finish temperature, then run my test model I get two errors. Is there something I need to do specifically to user-define parameters to ensure Ansys simulates the correct physics?&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2025\/03\/13-03-2025-1741902360-SMAproperties.png\" alt=\"\" \/>&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2025\/03\/13-03-2025-1741902431-Screen Shot 2025-03-13 at 2.44.41 PM.png\" alt=\"\" \/>&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-425624","topic","type-topic","status-publish","hentry","topic-tag-create-custom-model","topic-tag-custom-materials-1","topic-tag-shape-memory-alloy"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27791"],"_bbp_topic_id":["425624"],"_bbp_subscription":["498379","276552"],"_bbp_author_ip":["130.191.100.172"],"_bbp_last_reply_id":["425937"],"_bbp_last_active_id":["425937"],"_bbp_last_active_time":["2025-03-17 16:14:31"],"_bbp_reply_count":["1"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["2"],"_bbp_engagement":["498379","276552"],"_btv_view_count":["266"],"_bbp_topic_status":["unanswered"]},"test":"lcrisostomo9564sdsu-edu"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/425624","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\/425624\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=425624"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}