Evolutionary topology optimization using the extended finite element method and isolines

Abdi, Meisam and Wildman, Ricky and Ashcroft, Ian (2014) Evolutionary topology optimization using the extended finite element method and isolines. Engineering Optimization, 46 (5). pp. 628-647. ISSN 1029-0273

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Abstract

This study presents a new algorithm for structural topological optimization of two-dimensional continuum structures by combining the extended finite element method (X-FEM) with an evolutionary optimization algorithm. Taking advantage of an isoline design approach for boundary representation in a fixed grid domain, X-FEM can be implemented to improve the accuracy of finite element solutions on the boundary during the optimization process. Although this approach does not use any remeshing or moving mesh algorithms, final topologies have smooth and clearly defined boundaries which need no further interpretation. Numerical comparisons of the converged solutions with standard bi-directional evolutionary structural optimization solutions show the efficiency of the proposed method, and comparison with the converged solutions using MSC NASTRAN confirms the high accuracy of this method.

Item Type: Article
Additional Information: This is an Accepted Manuscript of an article published by Taylor & Francis in Engineering Optimization on 13 March 2013, available online: http://www.tandfonline.com/10.1080/0305215X.2013.791815
Keywords: structural optimization, topology optimization, X-FEM, fixed grid, evolutionary algorithm
Schools/Departments: University of Nottingham, UK > Faculty of Engineering
Identification Number: 10.1080/0305215X.2013.791815
Depositing User: Eprints, Support
Date Deposited: 11 Oct 2017 13:09
Last Modified: 13 Oct 2017 16:35
URI: http://eprints.nottingham.ac.uk/id/eprint/47202

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