{"id":306888,"date":"2023-09-14T23:01:30","date_gmt":"2023-09-14T23:01:30","guid":{"rendered":"\/forum\/forums\/topic\/plastic-strain-increment-computation\/"},"modified":"2023-09-14T23:01:30","modified_gmt":"2023-09-14T23:01:30","slug":"plastic-strain-increment-computation","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/plastic-strain-increment-computation\/","title":{"rendered":"Plastic Strain Increment Computation"},"content":{"rendered":"<p>Hi All,<\/p>\n<p>I am reading up on the JH2 model for ceramics and trying to understand how the plastic strain increment is calculated. From literature, it says, &#8220;the plastic strain increment is the plastic strain during a cycle of integration&#8221;. I&#8217;m assuming that&#8217;s integrating the equivalent plastic strain rate, but then how does LS-DYNA compute the equivalent plastic strain rate using the JH2 model?<\/p>\n<p>I found another resource says that for the JH2 model, the plastic strain incremement can also be computed via the current equivalent stress state and the radial return algorithm. If that&#8217;s the case, where does the hardening modulus get derived from in the JH2 model, if at all?&nbsp;<\/p>\n<p>Clarification is greatly appreciated.<\/p>\n<p>PY<\/p>\n","protected":false},"template":"","class_list":["post-306888","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["39634","3136"],"_bbp_author_ip":["168.143.243.24"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["1149"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["306888"],"_bbp_forum_id":["27814"],"_bbp_engagement":["3136","39634"],"_bbp_voice_count":["2"],"_bbp_reply_count":["6"],"_bbp_last_reply_id":["307031"],"_bbp_last_active_id":["307031"],"_bbp_last_active_time":["2023-09-15 20:02:11"]},"test":"yipxx043umn-edu"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/306888","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\/306888\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=306888"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}