{"id":453965,"date":"2026-03-09T08:46:41","date_gmt":"2026-03-09T08:46:41","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/how-to-model-laminated-cfrp-in-autodyn\/"},"modified":"2026-03-09T08:46:41","modified_gmt":"2026-03-09T08:46:41","slug":"how-to-model-laminated-cfrp-in-autodyn","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/how-to-model-laminated-cfrp-in-autodyn\/","title":{"rendered":"How to model laminated CFRP in Autodyn"},"content":{"rendered":"<p>&lt;p&gt;Hi all,&lt;\/p&gt;&lt;p&gt;I am trying to simulate a hypervelocity impact (~5 km\/s) on a CFRP laminate consisting of 16 plies with 15 resin-rich interlayers using the SPH method.&lt;\/p&gt;&lt;p&gt;I already know the stacking sequence and fiber orientation of each ply. However, I am unsure how to properly construct the laminated structure in an SPH model.&lt;\/p&gt;&lt;p&gt;In particular, I would like to understand:&lt;\/p&gt;&lt;p&gt;&bull; How to assign the orthotropic fiber orientation for each ply when using SPH particles.&lt;br&gt;&bull; How to represent the interlaminar interfaces between plies (e.g., contact or cohesive behavior).&lt;br&gt;&bull; How to build the layered laminate structure itself so that ply-level damage mechanisms such as fiber breakage, fiber&ndash;matrix debonding, and ply delamination can be captured.&lt;\/p&gt;&lt;p&gt;What is the recommended approach to model the ply orientations, interply interfaces, and the laminate stacking structure when using SPH for CFRP impact simulations?&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-453965","topic","type-topic","status-publish","hentry","topic-tag-autodyn","topic-tag-carbon-fiber-composite","topic-tag-sph"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27814"],"_bbp_topic_id":["453965"],"_bbp_subscription":["644236","240"],"_bbp_author_ip":["140.116.202.64"],"_bbp_last_reply_id":["453985"],"_bbp_last_active_id":["453985"],"_bbp_last_active_time":["2026-03-09 12:43:59"],"_bbp_reply_count":["1"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["2"],"_bbp_engagement":["644236","240"],"_btv_view_count":["104"],"_bbp_topic_status":["unanswered"]},"test":"rileylau0913gmail-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/453965","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\/453965\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=453965"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}