4.6 Article

A scaled boundary finite element based explicit topology optimization approach for three-dimensional structures

Journal

Publisher

WILEY
DOI: 10.1002/nme.6498

Keywords

moving morphable component (MMC); scaled boundary finite element method (SBFEM); three-dimensional (3D) problem; topology optimization

Funding

  1. National Key Research and Development Plan [2016YFB0201601]
  2. Foundation for Innovative Research Groups of the National Natural Science Foundation [11821202]
  3. National Natural Science Foundation of China [11922204, 11872141, 11732004]
  4. Liao Ning Revitalization Talents Program [XLYC1907119]
  5. Innovative Research Team in University
  6. 111 Project [B14013]
  7. Program for Changjiang Scholars

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This article proposes an efficient approach for solving three-dimensional (3D) topology optimization problem. In this approach, the number of design variables in optimization as well as the number of degrees of freedom in structural response analysis can be reduced significantly. This is accomplished through the use of scaled boundary finite element method (SBFEM) for structural analysis under the moving morphable component (MMC)-based topology optimization framework. In the proposed method, accurate response analysis in the boundary region dictates the accuracy of the entire analysis. In this regard, an adaptive refinement scheme is developed where the refined mesh is only used in the boundary region while relating coarse mesh is used away from the boundary. Numerical examples demonstrate that the computational efficiency of 3D topology optimization can be improved effectively by the proposed approach.

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