{"id":394276,"date":"2024-11-19T12:53:50","date_gmt":"2024-11-19T12:53:50","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/eqivalent-plastic-strain-not-corresponding-to-fomulas\/"},"modified":"2024-11-19T12:53:50","modified_gmt":"2024-11-19T12:53:50","slug":"eqivalent-plastic-strain-not-corresponding-to-fomulas","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/eqivalent-plastic-strain-not-corresponding-to-fomulas\/","title":{"rendered":"Eqivalent plastic strain not corresponding to fomulas"},"content":{"rendered":"<p>&lt;p&gt;hello&lt;br&gt;iam using differnt materials on a tensile test to check different things.&nbsp;&lt;br&gt;I came across something i cant figure out, someone please help me explain&#8230;&lt;br&gt;&lt;br&gt;i have a tensile test, the section in the middle is 50mm long. i apply a displacement of 40mm in one end and its fixed in another&#8230;&lt;\/p&gt;&lt;p&gt;By the strain formula, this &epsilon;= &Delta;L\/L, this should give a strain of 80% in my analysis&#8230;&nbsp;&lt;\/p&gt;&lt;p&gt;But in my analysis the strain varies from 56%-67%, depending on which material properties i use. Can someone explain why it is like this?&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/19-11-2024-1732020502-mceclip0.png\" width=\"432\" height=\"318\" \/>&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/19-11-2024-1732020559-mceclip1.png\" \/>&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/19-11-2024-1732020603-mceclip2.png\" \/>&lt;\/p&gt;&lt;p&gt;Same boundary conditions as above, but different material:&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/19-11-2024-1732020705-mceclip3.png\" \/>&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/19-11-2024-1732020781-mceclip4.png\" \/>&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-394276","topic","type-topic","status-publish","hentry","topic-tag-elastic-plastic-material","topic-tag-equivalentplasticstrain-1","topic-tag-material","topic-tag-plasticstrain-1","topic-tag-tensile-test","topic-tag-test"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["48790","480261","275204"],"_bbp_author_ip":["212.33.144.253"],"_btv_view_count":["252"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["394276"],"_bbp_forum_id":["27791"],"_bbp_engagement":["48790","275204","480261"],"_bbp_voice_count":["3"],"_bbp_reply_count":["4"],"_bbp_last_reply_id":["394609"],"_bbp_last_active_id":["394609"],"_bbp_last_active_time":["2024-11-20 17:55:36"]},"test":"mloelandslb-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/394276","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\/394276\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=394276"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}