{"id":235843,"date":"2022-09-20T23:03:07","date_gmt":"2022-09-20T23:03:07","guid":{"rendered":"\/forum\/forums\/topic\/error-in-mechanical-spurious-stress-results-from-geometric-parametric-variation\/"},"modified":"2022-09-20T23:03:07","modified_gmt":"2022-09-20T23:03:07","slug":"error-in-mechanical-spurious-stress-results-from-geometric-parametric-variation","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/error-in-mechanical-spurious-stress-results-from-geometric-parametric-variation\/","title":{"rendered":"Error in Mechanical- Spurious stress results from geometric parametric variation"},"content":{"rendered":"<p>Hello,<\/p>\n<p>I was running stress analysis in Ansys Mechanical. For running multiple cases I created a parametric variation. I am using the Nissan Leaf motor model (shown below) I obtained from the Ansys learning hub. The thickness of the I and V shape magnets are the parameters. I am considering stresses only on the hole edges.&nbsp;<\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2022\/09\/20-09-2022-1663714635-mceclip0.png\"><\/p>\n<p>Based on a response surface based DoE, only three designs were successfully evaluated. For the three design points which were successfully evaluated I manually ran the stress analysis for those cases. However, I observed that the results were different from the DoE based stress.&nbsp;<\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2022\/09\/20-09-2022-1663714706-mceclip1.png\"><\/p>\n<p>I have also checked the case where stress is checked for the entire rotor body. However, I observed that the DoE based iterations gave much higher stress values than the ones I obtained with manual iterations for the same design points. In order to further check this, I took the rotational velocity as a parameter instead of the width of the magnets. In this case the DoE based results matched with the manually checked results. Am I making a mistake here? Is it feasible to perform a geometric parametric study in Ansys Mechanical?<\/p>\n<p>Thank you.<\/p>\n","protected":false},"template":"","class_list":["post-235843","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["407","240"],"_bbp_author_ip":["23.192.164.14"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["468"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["235843"],"_bbp_forum_id":["27791"],"_bbp_engagement":["240","407"],"_bbp_voice_count":["2"],"_bbp_reply_count":["3"],"_bbp_last_reply_id":["235912"],"_bbp_last_active_id":["235912"],"_bbp_last_active_time":["2022-09-21 17:35:13"]},"test":"agarwa20mcmaster-ca"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/235843","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\/235843\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=235843"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}