{"id":29792,"date":"2018-07-25T06:24:56","date_gmt":"2018-07-25T06:24:56","guid":{"rendered":"\/forum\/forums\/topic\/shape-memory-alloy\/"},"modified":"2018-07-25T06:24:56","modified_gmt":"2018-07-25T06:24:56","slug":"shape-memory-alloy","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/shape-memory-alloy\/","title":{"rendered":"Shape memory alloy"},"content":{"rendered":"<p>I am trying to model shape memory effect with the geometry like horseshoe. i am doing it in 3 load step with initial body temperature 278.15 k<\/p>\n<p><\/p>\n<p>&nbsp; &nbsp; &nbsp; 1 Displacement loading of 5 mm on each end i;e to widen the opening<\/p>\n<p><\/p>\n<p>&nbsp; &nbsp; &nbsp; 2 Unloading i;e applying 0 displacement load at the two faces for elastic recovery<\/p>\n<p><\/p>\n<p>&nbsp; &nbsp; &nbsp; 3 Temperature loading 310.15 k to recover the plastic strain remains after unloading.<\/p>\n<p><\/p>\n<p>To avoid nonlinear convergence problem, i used newton raphson method UNSYMMETRICAL, LARGE DEFLECTION ON, APPLY LOAD IN 300 SUB-STEP, ELEMENT SOLID 185(supportable for sma).<\/p>\n<p><\/p>\n<p>Solution converges for 2 load step i;e loading and unloading, but at the start of very first sub-step of 3rd load step the solution i non convergent with error as some elements are HIGHLY DISTORTED.<\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"template":"","class_list":["post-29792","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["1961"],"_bbp_old_topic_author_name_id":["Anonymous"],"_bbp_old_is_topic_anonymous_id":["false"],"_bbp_old_closed_status_id":["publish"],"_bbp_author_ip":[null],"_bbp_old_sticky_status_id":["normal"],"_bbp_likes_count":["0","0","0","0","0"],"_btv_view_count":["1805"],"_bbp_subscription":["236727"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["29792"],"_bbp_forum_id":["27791"],"_bbp_engagement":["897","157988"],"_bbp_voice_count":["2"],"_bbp_reply_count":["3"],"_bbp_last_reply_id":["60938"],"_bbp_last_active_id":["60938"],"_bbp_last_active_time":["2018-07-25 17:15:08"]},"test":"ankusham"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/29792","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\/29792\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=29792"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}