{"id":165219,"date":"2022-01-02T14:12:08","date_gmt":"2022-01-02T14:12:08","guid":{"rendered":"\/forum\/forums\/topic\/evaluate-failure-in-composite-specimen\/"},"modified":"2025-01-16T10:15:43","modified_gmt":"2025-01-16T10:15:43","slug":"evaluate-failure-in-composite-specimen","status":"answered","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/evaluate-failure-in-composite-specimen\/","title":{"rendered":"Evaluate failure in composite specimen"},"content":{"rendered":"<div class=\"Item-Body\">\n<div class=\"Message userContent\">\n<p>Hi everyone!<\/p>\n<p>I made a traction test of a composite specimen. I plotted the stress-strain curve and i want to identify the point where the failure occurs. I inserted inverse reserve factor but i have some questions about how it works: <\/p>\n<p>The IRF is the inverse of the safety factor, so it&#039;s the ratio between max stress and stress limit, but, if the IRF is related to the entire composite which are the stress limits? How can i use IRF to determine the failure stress of the composite?<\/p>\n<p>Another related question: i made two simulations, one with the damage initiation criteria and evolution law, and one without. If the damage occurs only when limits defined by a criteria are rached (I used Hashin), why the slope of the two curves (the one from damage and the one without damage) are different even before reaching the limit?<\/p>\n<p>Maybe these are dumb questions but i hope you&#039;ll help me. <\/p>\n<p>Thanks for your help!<\/p>\n","protected":false},"template":"","class_list":["post-165219","topic","type-topic","status-answered","hentry","topic-tag-damage-1","topic-tag-failure","topic-tag-s-1","topic-tag-static-structural"],"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":["3471"],"_bbp_likes_count":["0"],"_bbp_subscription":["243848"],"_bbpmt_movedon":["2022-08-26 07:46:59"],"_bbpmt_movedfrom":["27820"],"_bbp_topic_status":["answered"],"_bbp_status":["publish"],"_bbp_topic_id":["165219"],"_bbp_forum_id":["27791"],"_bbp_engagement":["6","203307"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["201646"],"_bbp_last_active_id":["201646"],"_bbp_last_active_time":["2022-01-03 18:51:16"]},"test":"andrea-preziusostudent-univaq-it"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/165219","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":1,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/165219\/revisions"}],"predecessor-version":[{"id":405199,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/165219\/revisions\/405199"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=165219"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}