Structural stress minimization design based on floating projection topology optimization
Aiming at minimizing the global Mises stress level,the resolution of stress localization issues is ad-dressed through the incorporation of a stress concentration function.Based on the floating projection topology optimization(FPTO)method,the stress relaxation technique is used to overcome the singularity of element stress,and the global stress minimization design of the structure is realized.Numerical examples demonstrate that through stress minimization design,peak stresses in the structure can be reduced by 25.32%to 36.49%,with a marginal increase in flexibility ranging from 2.20%to 5.87%.These findings validate the effectiveness of the proposed stress design method.
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