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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.

发布期刊链接：https://doi.org/10.1016/j.advengsoft.2019.102733