Structural optimisation based on the boundary element and level set methods

Ullah, B.; Trevelyan, J.; Matthews, P.C.

Abstract

A new method of structural topology optimisation is proposed in which an evolutionary approach is used with boundary element and level set methods. During the optimisation iterations, the proposed method automatically introduces internal cavities and does not rely on an initial guess topology with pre-existing holes. The zero level set contours describing both the external geometry and the internal cavities are converted to non-uniform rational B-splines (NURBS) for smooth boundary element meshing at each iteration. The optimal geometries generated by the proposed method for two-dimensional cases closely resemble to those available in the literature for a range of benchmark examples in the field of topology optimisation.

Citation

Ullah, B., Trevelyan, J., & Matthews, P. (2014). Structural optimisation based on the boundary element and level set methods. Computers and Structures, 137, 14-30. https://doi.org/10.1016/j.compstruc.2014.01.004

• Journal Article Type: Article
• Acceptance Date: Jan 2, 2014
• Online Publication Date: Feb 5, 2014
• Publication Date: Jun 1, 2014
• Deposit Date: May 15, 2014
• Publicly Available Date: May 29, 2014
• Journal: Computers and Structures
• Print ISSN: 0045-7949
• Electronic ISSN: 1879-2243
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 137
• Pages: 14-30
• DOI: https://doi.org/10.1016/j.compstruc.2014.01.004
• Keywords: Structural optimisation, Boundary element method, Level set method, NURBS.
• Public URL: https://durham-repository.worktribe.com/output/1433523