.png){kind=icon}
返回
Body-fitted bi-directional evolutionary structural optimization using nonlinear diffusion regularization
.png){kind=icon}
PRE
AI
DOI：10.1016/j.cma.2022.115114.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
The bi-directional evolutionary structural optimization (BESO) method effectively uses basic strategies of removing and adding material based on element sensitivity. However, challenges remain in generating smooth boundaries to improve the finite element analysis accuracy and achieve structural aesthetics. This work develops a body-fitted triangular/tetrahedral mesh generation algorithm to yield smooth boundaries in the BESO method. The optimization problem is regularized by adding a diffusion term in the objective function. We found that the first has the best regularization effect of Lorentzian, Tikhonov, Perona-Malik, Huber, and Tukey functions. The void elements are excluded from spatial optimization to save computation costs and computer memory. Numerical examples show that the proposed method converges quickly, only taking dozens of iterations to converge. Also, the smooth boundaries of the optimized structures in 2D/3D scenarios are naturally obtained from the proposed method, not from smoothing post-processing. Compared with the optimization toolbox in Abaqus, the example of the automotive control arm demonstrates smoother boundaries and lower average mean compliance. (c) 2022 Elsevier B.V. All rights reserved.
Keyword:
Topology optimization
Body-fitted mesh
Bi-directional evolutionary structural optimization
Nonlinear diffusion regularization
期刊
IF:
7.3
论文数:
1.3W
被引数:
5.6W
机构
引用论文
.png){kind=icon}
Nonlinear vibration of full-filled fluid corrugated sandwich functionally graded cylindrical shells
PREAI
分享收藏Convergent and mesh-independent solutions for the bi-directional evolutionary structural optimization method双向进化结构优化方法的收敛和网格无关解
PREAI
分享收藏Body-fitted topology optimization of 2D and 3D fluid-to-fluid heat exchangers二维和三维流体对流体换热器的贴体拓扑优化
OAAI
OAAI分享收藏SURF: A connectivity-based space filling curve construction algorithm in high genus 3D surface WSNsSURF: 一种基于连通性的高属三维曲面WSNs空间填充曲线构建算法
PREAI
分享收藏Large-scale stochastic topology optimization using adaptive mesh refinement and coarsening through a two-level parallelization scheme通过两级并行化方案使用自适应网格细化和粗化的大规模随机拓扑优化OAAI
OAAI分享收藏Bi-directional Evolutionary Structural Optimization on Advanced Structures and Materials: A Comprehensive Review先进结构和材料的双向进化结构优化: 综述
PREAI
分享收藏
查看更多内容