Title: The structural topology optimisation based on parameterised level-set method in isogeometric analysis

Authors: Zijun Wu; Shuting Wang

Addresses: School of Mechanical Science and Engineering, Huazhong University of Science and Engineering, Wuhan, China ' School of Mechanical Science and Engineering, Huazhong University of Science and Engineering, Wuhan, China

Abstract: The isogeometric analysis (IGA), which establishes a bridge between CAD and CAE, offers a new convenient framework of optimisation. This article develops an approach to apply the non-uniform rational basis splines (NURBS)-based IGA to the topology optimisation using parameterised level set method. Here, the objective function is evaluated according to the basis function of NURBS and the level set function is constructed through collocation points using the compactly supported radial basis function. To evaluate the equivalent strain energy for each element, the level-set function value of every node is calculated from the corresponding value of collocation points. We have compared the numerical result accuracy as well as the time cost of the proposed method, and it turns out to be very promising.

Keywords: isogeometric analysis; IGA; topology optimisation; level set method; LSM; radial basis functions.

DOI: 10.1504/IJCSM.2017.085861

International Journal of Computing Science and Mathematics, 2017 Vol.8 No.4, pp.353 - 363

Received: 24 Jun 2016
Accepted: 12 Feb 2017

Published online: 16 Aug 2017 *

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