{"id":310926,"date":"2023-10-10T18:44:04","date_gmt":"2023-10-10T18:44:04","guid":{"rendered":"\/forum\/forums\/topic\/erosion-criteria-understanding-for-continuum-damage-mechanics-models-in-ls-dyna\/"},"modified":"2023-10-10T18:44:04","modified_gmt":"2023-10-10T18:44:04","slug":"erosion-criteria-understanding-for-continuum-damage-mechanics-models-in-ls-dyna","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/erosion-criteria-understanding-for-continuum-damage-mechanics-models-in-ls-dyna\/","title":{"rendered":"Erosion Criteria Understanding For Continuum Damage Mechanics Models in LS-DYNA"},"content":{"rendered":"<p>Hi all,<\/p>\n<p>On my quest to understand all the parameters involved in preparing a successful high-speed impact simulation, I found a thread called, &#8220;On Erosion&#8221; (see here: \/forum\/forums\/topic\/on-erosion\/) that spurred a few questions about how MAT_ADD_EROSION works. If an element is removed from the calculation, say after some EFFEPS condition is met, then does the energy from that eroded element get averaged to the other neighboring elements? How does an eroded node still carry momentum (stated in link) since it is effectively removed from the simulation?<\/p>\n<p>If I have an impact configuration with a brittle ceramic projectile hitting a rigid wall (fictitious situation just to have some complete fracture\/shatter or material), I&#8217;m assuming then finite element is just not appropriate for this case even with erosion criteria?<\/p>\n<p>Any clarification\/understanding is greatly appreciated.<\/p>\n<p>Peter&nbsp;<\/p>\n","protected":false},"template":"","class_list":["post-310926","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["39634","3136"],"_bbp_author_ip":["23.52.43.81"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["1169"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["310926"],"_bbp_forum_id":["27814"],"_bbp_engagement":["3136","39634"],"_bbp_voice_count":["2"],"_bbp_reply_count":["3"],"_bbp_last_reply_id":["311269"],"_bbp_last_active_id":["311269"],"_bbp_last_active_time":["2023-10-12 14:18:12"]},"test":"yipxx043umn-edu"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/310926","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\/310926\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=310926"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}