论文部分内容阅读
We have recently proposed a stress-based topology optimization approach using bi-directional evolutionary structural optimization (BESO) method[1].The discrete nature of the BESO method avoids naturally the well-known "singularity" problem in density-based methods with degenerated materials.The p-norm stress aggregation scheme is adopted for the measure of global stress level.A computationally efficient sensitivity number formulation is derived from the adjoint sensitivity of the global stress measure.