We usually use Strain Energy as objective with volume constraint in topology tasks. But if I want to obtain a lightweight structure that the stress in it does not exceed material strength, I should optimize the structure with volume as objective function and a stress constraint.
During the iterations, the value of stress can exceed what I set for the constraint (say, I set stress constraint to be smaller than 785 MPa, but the output of the topology task has stress = 1.96e+5 MPa)
Anyone tried to use a stress constraint? How to deal with the errors? I just want to have an reasonable optimized shape. Thank a lot!
These links may help you
http://www.simulia.com/download/rum11/GL/Sandeep-Urankar-ATOM-SGL-RUM-2011.pdf
https://www.chalmers.se/SiteCollectionDocuments/Produkt-%20och%20produktionsutveckling/Nationell%20kompetensarena%20kring%20produktoptimering/Methodology_for_Topology_and_Shape_Optimization_report.pdf://www.simulia.com/download/pdf2009/Furbatto_SCC2009.pdf
If the error is just local, maybe it can be just a visualization/interpolation error.
Have you followed the std procedure (http://www.simulia.com/download/rum11/GL/Sandeep-Urankar-ATOM-SGL-RUM-2011.pdf)?
Franco
https://www.sciencedirect.com/search?qs=Topology%20Optimization%20using%20Abaqus%20with%20stress%20as%20constraint&show=25&sortBy=relevance
http://www.google.com/search?ei=0sc8W9rjDIjpvgSrzqLQBg&q=Topology+Optimization+using+Abaqus+with+stress+as+constraint&oq=Topology+Optimization+using+Abaqus+with+stress+as+constraint&gs_l=psy-ab.3..33i160k1.1355450.1357524.0.1358630.1.1.0.0.0.0.254.254.2-1.1.0....0...1.1j2.64.psy-ab..0.1.254....0.DYUGZxJ4s5I
https://www.youtube.com/results?search_query=Topology+Optimization+using+Abaqus+with+stress+as+constraint
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