{"id":41389,"date":"2020-03-01T17:56:24","date_gmt":"2020-03-01T17:56:24","guid":{"rendered":"\/forum\/forums\/topic\/avoiding-self-peneteration-in-explicit-dynamics\/"},"modified":"2020-03-01T17:56:24","modified_gmt":"2020-03-01T17:56:24","slug":"avoiding-self-peneteration-in-explicit-dynamics","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/avoiding-self-peneteration-in-explicit-dynamics\/","title":{"rendered":"Avoiding self-peneteration in explicit dynamics"},"content":{"rendered":"<p>Hello<\/p>\n<p><\/p>\n<p>I am analyzing a simple compression on a lattice structure. I have enabled the body interaction (trajectory) so the body does not penetrate into itself. However, in large deformation, it does not work and the body penetrates into itself as shown in the below image:<\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/fb70fc07-7f8f-4fca-afe1-ab34011355d5\/0972b44c-687d-4dfb-ae50-ab710124fd15_2.jpg?width=690&amp;upscale=false\" alt=\"\"><\/p>\n<p><\/p>\n<p>I cannot use the &#8220;proximity-based&#8221; either as the below error pops up with &#8220;proximity-based contact&#8221;:<\/p>\n<p><\/p>\n<p>&#8220;The physical distance between bodies in the model falls within the selected tolerance for proximity-based contact.<br \/>Try using a smaller body interactions &ldquo;Pinball Factor&rdquo;, moving bodies to give sufficient separation<br \/>or switching contact detection to use trajectory contact.&#8221;<\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n<p><\/p>\n<p>I wonder if there is a way to avoid self penetration in this model.<\/p>\n<p><\/p>\n<p>Thanks<\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"template":"","class_list":["post-41389","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["13569"],"_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"],"_btv_view_count":["1444"],"_bbp_subscription":["246198"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["41389"],"_bbp_forum_id":["27791"],"_bbp_engagement":["121","200","240","171867"],"_bbp_voice_count":["4"],"_bbp_reply_count":["7"],"_bbp_last_reply_id":["107675"],"_bbp_last_active_id":["107675"],"_bbp_last_active_time":["2020-03-12 16:34:38"]},"test":"hamednik"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/41389","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\/41389\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=41389"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}