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Revisiting p-refinement in structural topology optimization
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DOI：10.1016/j.istruc.2021.09.078.png)
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The results obtained in traditional topology optimization with a single density design variable assigned to each element, are typically improved through h-refinement where the resolution of the FE mesh is scaled up along with the number of density elements/voxels, without increasing the order of the finite element interpolation. Higher order elements allow a more realistic simulation of the physics without some of the spurious results associated with lower order elements, including improved numerical instability as a tertiary advantage. In this work, we conduct a detailed investigation of p-refinement in the context of SIMP topology optimization including optimized topologies, compliance values and CPU clock time, for various 2D classical benchmark problems.
Keyword:
Interpolation
Numerical instability
Finite element
Serendipity element
Lagrangian
期刊
IF:
4.3
论文数:
1.2W
被引数:
2.7W
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