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

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...

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Bibliographic Details
Published in:WIT Transactions on the Built Environment 1997-01, Vol.31
Main Authors: Kelliher, Denis, Robinson, James C, Campbell, John S
Format: Article
Language:English
Subjects:
Boundary element method
Computation
Design
Design optimization
Finite element method
Mathematical models
Sensitivity analysis
Online Access:Get full text
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Summary: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
ISSN:1746-4498
1743-3509
DOI:10.2495/OP970401