{"id":275771,"date":"2023-03-21T20:54:55","date_gmt":"2023-03-21T20:54:55","guid":{"rendered":"\/forum\/forums\/topic\/pipe-pressure-load-error-with-shared-topology\/"},"modified":"2023-03-21T20:55:54","modified_gmt":"2023-03-21T20:55:54","slug":"pipe-pressure-load-error-with-shared-topology","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/pipe-pressure-load-error-with-shared-topology\/","title":{"rendered":"Pipe pressure load error with shared topology"},"content":{"rendered":"<p class=\"MsoNormal\"><span lang=\"EN-US\">Hello everyone,<\/span><\/p>\n<p class=\"MsoNormal\">&nbsp;<\/p>\n<p class=\"MsoNormal\"><span lang=\"EN-US\">I am trying to simulate an inflatable structure with pipe and shell elements, the elements are mechanically attached so as to transfer the loads between them, so I use the share topology option in my SpaceClaim geometry.<\/span><\/p>\n<p class=\"MsoNormal\"><span lang=\"EN-US\">However, when importing it to ANSYS Mechanical, I am no table to apply the internal inner pressure to the pipes, I tried to un-share the pipe structure from the outer shell envelope and attach them with bounding connections but I am getting an ill matrix error upon solution.<\/span><\/p>\n<p class=\"MsoNormal\"><span lang=\"EN-US\">I cannot upload any details about the project, but I replicated an example of the configuration with a cube, the edges are modelled as beam elements and the faces as Shell, all of them with 0.1 mm thickness. When I try to share the topology, I get the following error:<\/span><\/p>\n<p class=\"MsoNormal\"><span lang=\"EN-US\"><a class=\"wp-colorbox-image cboxElement\" href=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/03\/21-03-2023-1679431829-1.PNG\"><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/03\/21-03-2023-1679431829-1.PNG\" alt=\"\"><\/a><\/span><\/p>\n<p class=\"MsoNormal\"><span lang=\"EN-US\">And disabling the share topology and setting up manual bonding connections I do manage to get it working and obtain a reasonable solution:<\/span><\/p>\n<p class=\"MsoNormal\"><span lang=\"EN-US\"><a class=\"wp-colorbox-image cboxElement\" href=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/03\/21-03-2023-1679431920-2.PNG\"><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/03\/21-03-2023-1679431920-2.PNG\" alt=\"\"><\/a><\/span><\/p>\n<p class=\"MsoNormal\"><span lang=\"EN-US\"><a class=\"wp-colorbox-image cboxElement\" href=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/03\/21-03-2023-1679431952-3.PNG\"><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/03\/21-03-2023-1679431952-3.PNG\" alt=\"\"><\/a><\/span><\/p>\n<p class=\"MsoNormal\"><span lang=\"EN-US\">The pipe element sizing not matching the face sizing was done on purpose.<\/span><\/p>\n<p class=\"MsoNormal\"><span lang=\"EN-US\">Nevertheless, the automatic contacts are not working in the entire model I am having issues with and establishing hundreds of contacts manually would be my last resource.<\/span><\/p>\n<p class=\"MsoNormal\">&nbsp;<\/p>\n<p class=\"MsoNormal\"><span lang=\"EN-US\">Any suggestions would be highly appreciated.<\/span><\/p>\n<p class=\"MsoNormal\"><span lang=\"EN-US\">&nbsp;<\/span><\/p>\n<p class=\"MsoNormal\"><span lang=\"EN-US\">Best regards.<\/span><\/p>\n","protected":false},"template":"","class_list":["post-275771","topic","type-topic","status-closed","hentry","topic-tag-ansys-mechanical","topic-tag-beams-and-shells","topic-tag-bonded-contact","topic-tag-circular-pipe","topic-tag-connection","topic-tag-mechanical","topic-tag-share-topology","topic-tag-shell","topic-tag-shell-and-tube-1"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["279819","126"],"_bbp_author_ip":["23.223.149.206"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["1089"],"_edit_lock":["1679432123:211755"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["275771"],"_bbp_forum_id":["27791"],"_bbp_engagement":["126","279819"],"_bbp_voice_count":["2"],"_bbp_reply_count":["2"],"_bbp_last_reply_id":["276589"],"_bbp_last_active_id":["276589"],"_bbp_last_active_time":["2023-03-27 12:29:33"]},"test":"mgonzt02estudiantes-unileon-es"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/275771","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\/275771\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=275771"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}