{"id":39039,"date":"2019-11-19T05:04:23","date_gmt":"2019-11-19T05:04:23","guid":{"rendered":"\/forum\/forums\/topic\/coriolis-effect-in-harmonic-analysis-and-modal-analysis-coupled-together\/"},"modified":"2019-11-19T05:04:23","modified_gmt":"2019-11-19T05:04:23","slug":"coriolis-effect-in-harmonic-analysis-and-modal-analysis-coupled-together","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/coriolis-effect-in-harmonic-analysis-and-modal-analysis-coupled-together\/","title":{"rendered":"Coriolis Effect in Harmonic Analysis and Modal Analysis Coupled Together"},"content":{"rendered":"<p>&nbsp;<\/p>\n<p><\/p>\n<p class=\"MsoNormal\">I am working on the effect of an unbalance mass on a rotating shaft. For which I am performing Modal analysis followed by Harmonic Analysis. I have defined suitable supports as required by my model (cylindrical supports to model bearings). I have two issues linked together basically;<\/p>\n<p><\/p>\n<p class=\"MsoListParagraphCxSpFirst\" style=\"text-indent: -.25in; mso-list: l0 level1 lfo1;\"><!-- [if !supportLists]--><span style=\"mso-bidi-font-family: Calibri; mso-bidi-theme-font: minor-latin;\"><span style=\"mso-list: Ignore;\">1)<span style=\"font: 7.0pt 'Times New Roman';\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <\/span><\/span><\/span><!--[endif]-->In modal analysis, I have also defined a rotational velocity which is 3000 RPM. The moment I define rotational velocity, it asks me to turn Coriolis Effect &lsquo;ON&rsquo;. By turning it &lsquo;ON, I have to enable damping in the system otherwise it doesn&rsquo;t solve (screenshots attached)<\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n<p><\/p>\n<p class=\"MsoListParagraphCxSpLast\" style=\"text-indent: -.25in; mso-list: l0 level1 lfo1;\"><!-- [if !supportLists]--><span style=\"mso-bidi-font-family: Calibri; mso-bidi-theme-font: minor-latin;\"><span style=\"mso-list: Ignore;\">2)<span style=\"font: 7.0pt 'Times New Roman';\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <\/span><\/span><\/span><!--[endif]-->In Harmonic Analysis, I applied a force to create unbalance (screenshot attached). Rest of the settings are also shown (screenshot #4). When I start run, It gives me an error (MSUP harmonic doesn&rsquo;t support full damped&hellip;&hellip;.screenshot # 5 attached). I cannot turn off the damping, otherwise modal solution won&rsquo;t solve.<\/p>\n<p><\/p>\n<p class=\"MsoNormal\" style=\"margin-left: .25in;\">I am unable to understand where I&rsquo;m wrong. Any help in this matter will be highly appreciated.<\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n<p><\/p>\n<p class=\"MsoNormal\" style=\"margin-left: .25in;\">Regards.<\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"template":"","class_list":["post-39039","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["11218"],"_bbp_old_topic_author_name_id":["Anonymous"],"_bbp_old_is_topic_anonymous_id":["false"],"_bbp_old_closed_status_id":["publish"],"_bbp_author_ip":[null],"_bbp_old_sticky_status_id":["normal"],"_bbp_likes_count":["0"],"_btv_view_count":["2204"],"_bbp_subscription":["245044"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["39039"],"_bbp_forum_id":["27791"],"_bbp_engagement":["4","200","240","170679","170811"],"_bbp_voice_count":["5"],"_bbp_reply_count":["7"],"_bbp_last_reply_id":["100380"],"_bbp_last_active_id":["100380"],"_bbp_last_active_time":["2019-12-10 01:44:27"]},"test":"hamid"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/39039","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\/39039\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=39039"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}