{"id":167642,"date":"2022-03-23T12:13:22","date_gmt":"2022-03-23T12:13:22","guid":{"rendered":"\/forum\/forums\/topic\/why-the-maximum-equivalent-von-mises-stress-is-bigger-than-yield-and-ultimate-tensile-stress\/"},"modified":"2022-03-31T17:38:15","modified_gmt":"2022-03-31T17:38:15","slug":"why-the-maximum-equivalent-von-mises-stress-is-bigger-than-yield-and-ultimate-tensile-stress","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/why-the-maximum-equivalent-von-mises-stress-is-bigger-than-yield-and-ultimate-tensile-stress\/","title":{"rendered":"Why the Maximum Equivalent (von-Mises) stress is bigger than yield and Ultimate Tensile Stress?"},"content":{"rendered":"<div class=\"Item-Body\">\n<div class=\"Message userContent\">\n<p>hi everyone,<\/p>\n<p>i am doing stress analysis of turbine blade using the aerodynamic loads (pressure), Temperature profile of the blade at 15500 RPM. the model outline is attached. the material properties (800 C) is used are also attached. rotational velocity is 15500 rpm. but i am getting max stress much much more than UTS. what is the problem point which i am not considering. please help if anyone knows how to fix this. <\/p>\n<p>i used all the material properties at 800 C.<\/p>\n<p>yield strength of material is 870 MPa at 800 C and the stress i got from analysis is 2889 MPa. <\/p>\n<div class=\"embedExternal embedImage\">\n<div class=\"embedExternal-content\">\n<a class=\"embedImage-link\" href=\"\/forum\/wp-content\/uploads\/forum-uploads\/394\/D205JL5EB8DZ.jpg\" rel=\"nofollow noopener\" target=\"_blank\"><br \/>\n<img decoding=\"async\" class=\"embedImage-img\" src=\"\/forum\/wp-content\/uploads\/forum-uploads\/394\/D205JL5EB8DZ.jpg\" alt=\"FoS.jpg\" \/><br \/>\n<\/a><\/p>\n","protected":false},"template":"","class_list":["post-167642","topic","type-topic","status-closed","hentry","topic-tag-ansys","topic-tag-deformation","topic-tag-safety-factor","topic-tag-structural-analysis","topic-tag-von-mises-stress"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_btv_view_count":["4034"],"_bbp_likes_count":["0"],"_bbp_subscription":["251865"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["167642"],"_bbp_forum_id":["27791"],"_bbp_engagement":["157520","251865"],"_bbp_voice_count":["2"],"_bbp_reply_count":["2"],"_bbp_last_reply_id":["209340"],"_bbp_last_active_id":["209340"],"_bbp_last_active_time":["2022-03-31 17:38:15"]},"test":"abhatti-ms14aecaestudent-nust-edu-pk"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/167642","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\/167642\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=167642"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}