June 26, 2018 at 1:17 pmFrancescoSubscriber
i have to do a topology optimization of This turbine blisk.
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.
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 ?
June 26, 2018 at 8:25 pmpeteroznewmanSubscriber
You could slice the body in two, and put the two bodies into a multibody part so the mesh connects using Shared Topology. Then an entire body with the blade can be an excluded region, while just some faces on the other body can be excluded.
June 27, 2018 at 6:59 pmFrancescoSubscriber
Thanks for the reply !
June 27, 2018 at 7:06 pmSandeep MedikondaAnsys Employee
What version are you using? In 19.1, the manual says:
So, if you define local von-mises it should only work in the optimization region and shouldn't affect the whole part? Isn't this what you are seeing?
August 14, 2019 at 1:12 pmLiansenshaSubscriber
Hi,I also meet the same problem ,i set the consatraints as the max displacement,The result of the topolgy optimization is also "shell body" with no material inside but only i thin surface,and the max displacement of my new part is more than the max displacement which i set.I find it work in the whole region. Please help me solve this problem.
August 14, 2019 at 5:37 pmpeteroznewmanSubscriber
@Liansensha, please open a New Discussion so you can get notified of the replies. When you post, please insert some images so we can see your geometry.
- The topic ‘Global von -Misses stress constraint in Topology optimization’ is closed to new replies.
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