{"id":162718,"date":"2021-10-01T11:45:32","date_gmt":"2021-10-01T11:45:32","guid":{"rendered":"\/forum\/forums\/topic\/stress-analysis-for-thermal-expansion-transient-thermal-and-static-structural-simulation\/"},"modified":"2021-10-19T10:24:49","modified_gmt":"2021-10-19T10:24:49","slug":"stress-analysis-for-thermal-expansion-transient-thermal-and-static-structural-simulation","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/stress-analysis-for-thermal-expansion-transient-thermal-and-static-structural-simulation\/","title":{"rendered":"Stress analysis for thermal expansion\/ Transient Thermal and Static Structural Simulation"},"content":{"rendered":"
\n
\n

I want to simulate the cooling of a wooden block and the tension which comes with it. <\/p>\n

As first I simulate with the Transient Thermal components the cooling of a block from 20°C to -200°C. Thats totally working fine. Then I import the loads from the thermal expansion coefficient into the Static Structural components. When I now try to simulate this I get following error multiple times:<\/p>\n

 *** ERROR ***                          CP =     19.453  TIME= 13:09:24<\/p>\n

 Thermal strain in element 87626 with material 29 has caused the element  to invert. Please check the thermal expansion definition and the  temperature change.<\/p>\n

The Zero-Thermal-Strain Reference Temperature, the Environmental Temperature and the Material Field Variables Temperature of all materials is set to 20°C because I read that they should be the same. <\/p>\n

I also used Direct Solver and put the Force Convergence and Displacmenet Convergence on . Large Deflection is also put on because I read in a post that this all helps in simulations with extreme thermal phenomena.<\/p>\n

I´m irritated a bit because I made some similar simulations befor and normally they worked. Maybe someone can help me out with a solution. <\/p>\n

\n
\n
\n\"1.PNG\"
\n<\/a><\/p>\n","protected":false},"template":"","class_list":["post-162718","topic","type-topic","status-closed","hentry","topic-tag-cooling","topic-tag-static-structural","topic-tag-thermal-expansion-2","topic-tag-thermal-strain","topic-tag-transient-thermal"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_author_ip":[""],"_bbp_old_reply_author_name_id":["Anonymous"],"_bbp_old_is_reply_anonymous_id":["false"],"_btv_view_count":["2433"],"_bbp_likes_count":["0"],"_bbp_subscription":["244563"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["162718"],"_bbp_forum_id":["27791"],"_bbp_engagement":["240","170192"],"_bbp_voice_count":["2"],"_bbp_reply_count":["2"],"_bbp_last_reply_id":["193653"],"_bbp_last_active_id":["193653"],"_bbp_last_active_time":["2021-10-19 10:24:49"]},"test":"mtothee"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/162718","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\/162718\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=162718"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}