{"id":398417,"date":"2024-12-24T10:00:48","date_gmt":"2024-12-24T10:00:48","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/centrifugal-stress-in-compressor-impeller-static-structural-analysis\/"},"modified":"2024-12-24T10:00:48","modified_gmt":"2024-12-24T10:00:48","slug":"centrifugal-stress-in-compressor-impeller-static-structural-analysis","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/centrifugal-stress-in-compressor-impeller-static-structural-analysis\/","title":{"rendered":"Centrifugal stress in compressor impeller &#8211; static structural analysis"},"content":{"rendered":"<p>&lt;p&gt;Greetings,&nbsp;&lt;\/p&gt;&lt;p&gt;I am doing static structural analysis of a sector of a compressor impeller, with rotational velocity applied as inertial load. cyclic symmetry is applied, the hub faces are arrested with the following constraints,&nbsp;&lt;\/p&gt;&lt;p data-olk-copy-source=&#8221;MessageBody&#8221;&gt;Remote displacement &#8211; x = 0; y = 0; z = 0; rotx = 0; roty = 0; rotz = free;&lt;\/p&gt;&lt;p&gt;Remote displacement 2 &#8211; x = 0; y = 0; z = 0; rotx = 0; roty = 0; rotz = 0;&nbsp;&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/12\/24-12-2024-1735028539-mceclip0.png\" width=\"399\" height=\"361\" \/>&lt;\/p&gt;&lt;p&gt;Normal stress in rotating axis is obtained to get centrifugal stresses in the impeller.&nbsp;&lt;\/p&gt;&lt;p&gt;Is this method right? when trying to validate with analytical method (approximated as a disc) using hoop stress formula (&sigma; = (&omega;^2<em>r^2<\/em>&rho;)\/ 3), the results do not match.&lt;\/p&gt;&lt;p&gt;Analytically, for a radius of 52mm, 100000 rpm, &amp; 2850kg\/m^3 desnity, average hoop stress is 280MPa.&nbsp;&lt;\/p&gt;&lt;p&gt;Is there something fundamentally wrong with the method followed.&nbsp;&lt;\/p&gt;&lt;p&gt;Any insight will be helpful, thank you.&nbsp;&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-398417","topic","type-topic","status-publish","hentry","topic-tag-centrifugal","topic-tag-compressor","topic-tag-static-structural","topic-tag-structures"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Greetings, I am doing static structural analysis of a sector of a compressor impeller, with rotational velocity applied as inertial load. cyclic symmetry is applied, the hub faces are arrested with the following constraints, Remote displacement - x = 0; 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