{"id":436143,"date":"2025-07-05T19:03:10","date_gmt":"2025-07-05T19:03:10","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/good-quality-meshing-in-3d-solid-honeycomb-sandwich-panel-and-surface-model\/"},"modified":"2025-07-05T19:03:10","modified_gmt":"2025-07-05T19:03:10","slug":"good-quality-meshing-in-3d-solid-honeycomb-sandwich-panel-and-surface-model","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/good-quality-meshing-in-3d-solid-honeycomb-sandwich-panel-and-surface-model\/","title":{"rendered":"Good quality meshing in 3D solid Honeycomb sandwich panel and surface model"},"content":{"rendered":"

<p>**Core Specification:** Cell Size: 6.4 mm, Foil Thickness: 0.025 mm, Material: Aluminium, Cover Plate Material: Aluminium This is the experimental model I am using to simulate the modal analysis of the Honeycomb Sandwich Panel. Currently, I am facing an issue where, when using default meshing with fixed support boundary conditions applied to the holes, I obtain different mode shape data. Conversely, when I refine the mesh size, setting the core’s element size to 1 mm and the cover plate’s element size to 2 mm, I find that mode no. 6 exhibits only edge deformation. I suspect that the small foil thickness is introducing errors. After conducting some research to address this problem, I learned that converting the sandwich model into a surface model can be beneficial. I attempted this using two methods: 1. **Mid-Surface Method:** In SpaceClaim, I created a mid-surface and bound the two solid cover sheets (made of aluminium) using a manual contact region. I then applied the boundary conditions. However, this approach resulted in only the core edges showing mode shapes, while the cover plates remained stiff, leading to incorrect results. 2. **Honeycomb Creator Extension:** In my second attempt, I used the honeycomb creator extension to model the core and created two surfaces on top to represent the cover sheets. Unfortunately, this method also failed. I am seeking guidance on how to effectively simulate the modal analysis of a honeycomb sandwich panel using a surface model with better mesh quality. It is essential to maintain an accurate representation of the honeycomb core, as I plan to procemessed to optimisation following the modal analysis.<\/p><p>\"\"<\/p><p>\"\"<\/p><p>\"\"<\/p><p>\"\"<\/p><p>\"\"<\/p><p>\"\"<\/p><p> <\/p><p> <\/p><p> <\/p><p> <\/p><p> <\/p><p>\"\"<\/p><\/p>\n","protected":false},"template":"","class_list":["post-436143","topic","type-topic","status-publish","hentry","topic-tag-modeextraction-1","topic-tag-Structuredmeshing-2","topic-tag-2d-meshing-1","topic-tag-3d-meshing","topic-tag-thin-solid-1","topic-tag-thin-surface","topic-tag-Wrongresults-1"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27791"],"_bbp_topic_id":["436143"],"_bbp_subscription":["469294","480261"],"_bbp_author_ip":["2402:3a80:c8e:55ee:7d3a:88c5:bff7:5eb3"],"_bbp_last_reply_id":["436152"],"_bbp_last_active_id":["436152"],"_bbp_last_active_time":["2025-07-06 04:39:34"],"_bbp_reply_count":["1"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["2"],"_bbp_engagement":["469294","480261"],"_btv_view_count":["183"],"_bbp_topic_status":["unanswered"]},"test":"devashish-wanjarigmail-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/436143","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\/436143\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=436143"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}