{"id":29579,"date":"2018-06-26T13:17:59","date_gmt":"2018-06-26T13:17:59","guid":{"rendered":"\/forum\/forums\/topic\/global-von-misses-stress-constraint-in-topology-optimization\/"},"modified":"2018-06-26T13:17:59","modified_gmt":"2018-06-26T13:17:59","slug":"global-von-misses-stress-constraint-in-topology-optimization","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/global-von-misses-stress-constraint-in-topology-optimization\/","title":{"rendered":"Global von -Misses stress constraint in Topology optimization"},"content":{"rendered":"

Hi everyone,<\/p>\n

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i have to do a topology optimization of This turbine blisk.<\/p>\n

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It is then divided in 60 sector. Below there is the image of a slice that i use for the analysis. I do a static structure analysis by setting the pressure on the blade ìand the rotational velocity. I upload the image of the static structural settings.<\/p>\n

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When i do the topology optimization i esclude the surfaces of the blade (suction side and pressure side, in red in the image ). Next i set the consatraints such the mass to retain and max stress. I have a question about the global stress constraint: it  is applied to the whole body, design region and esclusion region? The result of the topolgy optimization of the blade it is a “shell body” with no material inside but only i thin surface, that is the esclusion region. It is obviusly that this kind of body cannot support the pressure acting on it, and think that the max Von-Mises stress is applied only in the sìdesign region. It is possible set the max stress on the esclusion region ?<\/p>\n

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Regards,<\/p>\n

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Francesco<\/p>\n","protected":false},"template":"","class_list":["post-29579","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t