WIT Press

A Hybrid Boundary-element/finite-element Method For The Computation Of Design Sensitivities In Structural Shape Optimisation

Price

Free (open access)

Paper DOI

10.2495/OP970401

Volume

31

Pages

10

Published

1997

Size

725 kb

Author(s)

Denis Kelliher, James C. Robinson & John S. Campbell

Abstract

This paper presents an accurate method of calculating design sensitivities of behaviour variables, such as displacements and stress, in FE structural shape optimisation problems. Its applicability to unstructured meshes is emphasised. The semi-analytical method is applied to the determination of the design sensitivities of behaviour variables in structural shape optimisation. It is shown how the computation of the geometric sensitivities (i.e. the sensitivity of internal points in the problem domain to boundary perturbations) is a primary task to carry out the sensitivity analysis. A

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