An efficient isogeometric topology optimization using multilevel mesh, MGCG and local-update strategy
发布时间：2020-12-04
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- 论文类型：
- 期刊论文
- 发表刊物：
- Advances in Engineering Software
- 收录刊物：
- SCI
- 学科门类：
- 工学
- 一级学科：
- 机械工程
- 关键字：
- Isogeometric topology optimizationHigh-efficiencyMultilevel meshMultigrid conjugate gradient methodLocal-update
- DOI码：
- 10.1016/j.advengsoft.2019.102733
- 摘要：
- This paper proposes a new high-efficiency isogeometric topology optimization (HITO), including three part: multilevel mesh, multigrid conjugate gradient method (MGCG) and local-update strategy, which improves the efficiency in three aspects: mesh scale reduction, solving acceleration and design variables reduction. Four benchmark examples are used to evaluate proposed method, and the results show that the proposed HITO successfully reduces 37%–93% computational time compared to the conventional isogeometric topology optimization (CITO) and obtains consistent optimization results, which demonstrates the high-efficiency of the HITO. Furthermore, the efficiency improvement of the HITO will be more significant for the large-scale problems.