{"id":168367,"date":"2022-04-11T12:24:57","date_gmt":"2022-04-11T12:24:57","guid":{"rendered":"\/forum\/forums\/topic\/adding-stiffeness-to-part\/"},"modified":"2022-04-21T10:16:16","modified_gmt":"2022-04-21T10:16:16","slug":"adding-stiffeness-to-part","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/adding-stiffeness-to-part\/","title":{"rendered":"Adding stiffeness to part"},"content":{"rendered":"<div class=\"Item-Body\">\n<div class=\"Message userContent\">\n<p>Hello all<\/p>\n<p><\/p>\n<\/p>\n<p>Question1 )<\/p>\n<p>I want apply stiffeness whose value I know to a cuboid geometry.<\/p>\n<p>Is it possible to apply stiffeness in Ansys mechanical? <\/p>\n<p>How? <\/p>\n<p>Question 2)<\/p>\n<p>If say I know modal frequency of my complex geometry(Car engine) , say (between 6 to 7 Hz), how I can calculate stiffeness of that geometry? <\/p>\n<p>Will I just need use that simple formula &quot; In which we can calculate natural frequency? But I guess that formula, is suitable only for simple geometry? (Photo attached)\/<\/p>\n<p>Question 3)<\/p>\n<p>Statement below from Internet :<\/p>\n<p>&quot;Six-order frequency means that exciting frequency in six times more than shaft rotation. If the speed range of m\/s engine is 80-110 rpm then six-order frequency is 8-11 Hz&quot;<\/p>\n<p>How they calculated frequency, I didnt understand?<\/p>\n<p><\/p>\n<\/p>\n<div class=\"embedExternal embedImage\">\n<div class=\"embedExternal-content\">\n<a class=\"embedImage-link\" href=\"\/forum\/wp-content\/uploads\/forum-uploads\/245\/4COPYYRCOT47.jpg\" rel=\"nofollow noopener\" target=\"_blank\"><br \/>\n<img decoding=\"async\" class=\"embedImage-img\" src=\"\/forum\/wp-content\/uploads\/forum-uploads\/245\/4COPYYRCOT47.jpg\" alt=\"16496805627292197397535858735083.jpg\" \/><br \/>\n<\/a><\/p>\n","protected":false},"template":"","class_list":["post-168367","topic","type-topic","status-closed","hentry","topic-tag-peteroznewman"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_btv_view_count":["406"],"_bbp_likes_count":["0"],"_bbp_subscription":["242290","167829"],"_bbpmt_movedon":["2022-08-26 07:36:55"],"_bbpmt_movedfrom":["27820"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["168367"],"_bbp_forum_id":["27791"],"_bbp_engagement":["88","240","167829"],"_bbp_voice_count":["3"],"_bbp_reply_count":["7"],"_bbp_last_reply_id":["251837"],"_bbp_last_active_id":["251837"],"_bbp_last_active_time":["2023-02-28 02:16:29"]},"test":"tumi"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/168367","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\/168367\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=168367"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}