{"id":379196,"date":"2024-08-15T16:40:32","date_gmt":"2024-08-15T16:40:32","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/laminated-composite-stiffened-platestiffened-panels\/"},"modified":"2024-08-15T16:40:32","modified_gmt":"2024-08-15T16:40:32","slug":"laminated-composite-stiffened-platestiffened-panels","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/laminated-composite-stiffened-platestiffened-panels\/","title":{"rendered":"laminated composite stiffened plate\/stiffened panels"},"content":{"rendered":"

I simulated a laminated composite plate that has a ‘foot’ supported halfway. However, the analytical results are different from the numerical simulation and the numerical simulation presents two different results. The plate has the stacking [-45 90 45 0]s and the ‘foot’ [45 0 -45 0 -45 0 45].  The thickness of the layers is 0.125 mm. The foot was connected to the plate by bonded contact. The following simulation results were obtained:<\/p>\n

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The buckling load was 61.958 kN<\/p>\n

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However, if only a plate is modeled in which half of it has stacking of [-45 90 45 0 0 45 90 -45 45 0 -45 0 -45 0 45] (superposition of plate+stiffener stacking) and the other half of [-45 90 45 0]s, the buckling load obtained was from 181.64 kN<\/p>\n

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Why did this large difference in buckling loads occur?<\/p>\n

When a uniform thickness plate with the stacking of [-45 90 45 0]s is modeled, the buckling load is 62.89 kN . When the stacking of [-45 90 45 0 0 45 90 -45 45 0 -45 0 -45 0 45] is considered, the load is 464 kN. <\/p>\n

other question: bonded contact couples all degrees of freedom of the plate and foot nodes with equal coordinates?<\/p>\n

If not, how do I do that?<\/p>\n

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Thank you!<\/p>\n","protected":false},"template":"","class_list":["post-379196","topic","type-topic","status-publish","hentry","topic-tag-acp","topic-tag-acp-compositematerials-2","topic-tag-acp-pre","topic-tag-ansys-acp","topic-tag-AnsysWorkbenchacpBCs-1","topic-tag-carbon-fiber-composite","topic-tag-composite-analysis","topic-tag-composite-laminates-1","topic-tag-composite-modeling","topic-tag-plate-1","topic-tag-rectangular-plate","topic-tag-thin-plate"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["205194","5977"],"_bbp_author_ip":["2804:5c:4d9c:c300:44d3:592:12e5:2b8c"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["373"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["379196"],"_bbp_forum_id":["27791"],"_bbp_engagement":["5977","205194"],"_bbp_voice_count":["2"],"_bbp_reply_count":["2"],"_bbp_last_reply_id":["380477"],"_bbp_last_active_id":["380477"],"_bbp_last_active_time":["2024-08-26 14:49:18"]},"test":"lidianne-pintoaluno-ufop-edu-br"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/379196","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\/379196\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=379196"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}