{"id":390389,"date":"2024-10-18T10:32:40","date_gmt":"2024-10-18T10:32:40","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/geometric-stiffness-matrix-for-solid-elements\/"},"modified":"2024-10-21T13:20:27","modified_gmt":"2024-10-21T13:20:27","slug":"geometric-stiffness-matrix-for-solid-elements","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/geometric-stiffness-matrix-for-solid-elements\/","title":{"rendered":"Geometric stiffness matrix for solid elements"},"content":{"rendered":"<p>&lt;p&gt;&lt;p&gt;Hello, We have recently attempted to calculate the geometric stiffness matrix for solid elements using the methods described in the ANSYS help documentation, as well as the theories of Bathe, Cook, Borst, N\u011bmec, and Wriggers. However, the resulting geometric stiffness matrices consistently differ from those output by ANSYS APDL. We would like to confirm whether the computational principles used by ANSYS APDL for the geometric stiffness matrix differ from those documented in publicly available literature, or if there are any specific internal reference materials on this topic. Thank you for your response!&lt;\/p&gt;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-390389","topic","type-topic","status-publish","hentry","topic-tag-ansys-apdl","topic-tag-solid-element-1","topic-tag-stiffness-matrix","topic-tag-theory"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hello, We have recently attempted to calculate the geometric stiffness matrix for solid elements using the methods described in the ANSYS help documentation, as well as the theories of Bathe, Cook, Borst, N\u011bmec, and Wriggers. However, the resulting geometric stiffness matrices consistently differ from those output by ANSYS APDL. We would like to confirm whether\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/geometric-stiffness-matrix-for-solid-elements\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Ansys Learning Forum | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Geometric stiffness matrix for solid elements | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Hello, We have recently attempted to calculate the geometric stiffness matrix for solid elements using the methods described in the ANSYS help documentation, as well as the theories of Bathe, Cook, Borst, N\u011bmec, and Wriggers. However, the resulting geometric stiffness matrices consistently differ from those output by ANSYS APDL. We would like to confirm whether\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/geometric-stiffness-matrix-for-solid-elements\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2024-10-18T10:32:40+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2024-10-21T13:20:27+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Geometric stiffness matrix for solid elements | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Hello, We have recently attempted to calculate the geometric stiffness matrix for solid elements using the methods described in the ANSYS help documentation, as well as the theories of Bathe, Cook, Borst, N\u011bmec, and Wriggers. However, the resulting geometric stiffness matrices consistently differ from those output by ANSYS APDL. 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However, the resulting geometric stiffness matrices consistently differ from those output by ANSYS APDL. We would like to confirm whether","og:url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/geometric-stiffness-matrix-for-solid-elements\/","article:published_time":"2024-10-18T10:32:40+00:00","article:modified_time":"2024-10-21T13:20:27+00:00","twitter:card":"summary_large_image","twitter:title":"Geometric stiffness matrix for solid elements | Ansys Learning Forum","twitter:description":"Hello, We have recently attempted to calculate the geometric stiffness matrix for solid elements using the methods described in the ANSYS help documentation, as well as the theories of Bathe, Cook, Borst, N\u011bmec, and Wriggers. However, the resulting geometric stiffness matrices consistently differ from those output by ANSYS APDL. We would like to confirm whether"},"aioseo_meta_data":{"post_id":"390389","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"content","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":true,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"limit_modified_date":false,"created":"2024-10-28 16:22:39","updated":"2024-10-28 16:22:39","ai":null,"breadcrumb_settings":null,"seo_analyzer_scan_date":null},"aioseo_breadcrumb":"<div class=\"aioseo-breadcrumbs\"><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/innovationspace.ansys.com\/forum\" title=\"Home\">Home<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/innovationspace.ansys.com\/forum\/topics\/\" title=\"Topics\">Topics<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic-tag\/theory\/\" title=\"theory\">theory<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\tGeometric stiffness matrix for solid elements\n\t\t<\/span><\/div>","aioseo_breadcrumb_json":[{"label":"Home","link":"https:\/\/innovationspace.ansys.com\/forum"},{"label":"Topics","link":"https:\/\/innovationspace.ansys.com\/forum\/topics\/"},{"label":"theory","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic-tag\/theory\/"},{"label":"Geometric stiffness matrix for solid elements","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/geometric-stiffness-matrix-for-solid-elements\/"}],"acf":[],"custom_fields":[{"0":{"_bbp_author_ip":["218.203.224.81"],"_btv_view_count":["2820"],"_bbp_topic_status":["unanswered"],"_edit_last":["9935"],"_bbp_revision_log":["a:1:{i:390640;a:2:{s:6:\"author\";i:9935;s:6:\"reason\";s:0:\"\";}}"],"_bbp_subscription":["13934","468725"],"_bbp_likes_count":["1"],"_bbp_notification_enabled":["468725"],"_bbp_topic_id":["390389"],"_bbp_forum_id":["27791"],"_bbp_engagement":["13934","468725"],"_bbp_voice_count":["2"],"_bbp_reply_count":["5"],"_bbp_last_reply_id":["391681"],"_bbp_last_active_id":["391681"],"_bbp_last_active_time":["2024-10-29 06:11:58"]},"test":"3343534645qq-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/390389","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":1,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/390389\/revisions"}],"predecessor-version":[{"id":390640,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/390389\/revisions\/390640"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=390389"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}