{"id":438008,"date":"2025-07-29T05:21:44","date_gmt":"2025-07-29T05:21:44","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/composite-modelling-2\/"},"modified":"2025-07-29T05:21:44","modified_gmt":"2025-07-29T05:21:44","slug":"composite-modelling-2","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/composite-modelling-2\/","title":{"rendered":"Composite Modelling"},"content":{"rendered":"<p>&lt;p&gt;Hello everyone, I am modelling composites for impact simulations but i am unable to validate existing literature.&nbsp;I have alligned the fibers into desired direction as well.&lt;\/p&gt;&lt;p&gt;I have given eroding surface to surface contact between projectile and composite layers and automatic surface to surface tiebreak between composite layers.&lt;\/p&gt;&lt;p&gt;After the impact, the elements of one composite layer are falling into other without maintaining the proper contact (image below). How can I solve this issue?&nbsp; What other possible errors could be there for my simulation to not match the previously published results apart from the material properties. Would symmetry plays a major role in results. I have set 3 boundary conditions, fixed and x and z symmetry by restricting the degree of freedom for respective case.&lt;\/p&gt;&lt;p&gt;Thankyou&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"Self\" alt=\"\" width=\"NaN\" height=\"NaN\" \/><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2025\/07\/29-07-2025-1753766127-img.jpeg\" alt=\"\" width=\"511\" height=\"383\" \/>&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-438008","topic","type-topic","status-publish","hentry","topic-tag-composite-analysis","topic-tag-composite-laminates-1","topic-tag-composite-modeling","topic-tag-composite-preppost"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27814"],"_bbp_topic_id":["438008"],"_bbp_subscription":["492369","523"],"_bbp_author_ip":["103.144.92.224"],"_bbp_last_reply_id":["438417"],"_bbp_last_active_id":["438417"],"_bbp_last_active_time":["2025-08-02 11:08:30"],"_bbp_reply_count":["2"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["2"],"_bbp_engagement":["492369","523"],"_btv_view_count":["181"],"_bbp_topic_status":["unanswered"]},"test":"b280cd373caf16321d8e711c23564ecdaa37144f"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/438008","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\/438008\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=438008"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}