Vol.122, No.3, 2020, pp.1119-1140, doi:10.32604/cmes.2020.08859
OPEN ACCESS
RESEARCH ARTICLE
Multiresolution Isogeometric Topology Optimisation Using Moving Morphable Voids
  • Bingxiao Du1, Yong Zhao1, *, Wen Yao2, Xuan Wang3, Senlin Huo1
1 College of Aerospace Science and Engineering, National University of Defense Technology, Changsha, 410073, China.
2 National Innovation Institute of Defense Technology, Chinese Academy of Military Science, Beijing, 100000, China.
3 School of Civil Engineering, Hefei University of Technology, Hefei, 230009, China.
* Corresponding Author: Yong Zhao. Email: zhaoyong@nudt.edu.cn.
(This article belongs to this Special Issue: Recent Developments of Isogeometric Analysis and its Applications in Structural Optimization)
Received 19 October 2019; Accepted 19 November 2019; Issue published 01 March 2020
Abstract
A general and new explicit isogeometric topology optimisation approach with moving morphable voids (MMV) is proposed. In this approach, a novel multiresolution scheme with two distinct discretisation levels is developed to obtain high-resolution designs with a relatively low computational cost. Ersatz material model based on Greville abscissae collocation scheme is utilised to represent both the Young’s modulus of the material and the density field. Two benchmark examples are tested to illustrate the effectiveness of the proposed method. Numerical results show that high-resolution designs can be obtained with relatively low computational cost, and the optimisation can be significantly improved without introducing additional DOFs.
Keywords
Isogeometric analysis (IGA), multiresolution, moving morphable voids (MMV), topology optimisation.
Cite This Article
Du, B., Zhao, Y., Yao, W., Wang, X., Huo, S. (2020). Multiresolution Isogeometric Topology Optimisation Using Moving Morphable Voids. CMES-Computer Modeling in Engineering & Sciences, 122(3), 1119–1140.