Shape optimisation for crashworthiness followed by a robustness analysis with respect to shape variables

Shape optimisation for crashworthiness followed by a robustness analysis with respect to shape variables

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Article ID: iaor20133793
Volume: 48
Issue: 2
Start Page Number: 367
End Page Number: 378
Publication Date: Aug 2013
Journal: Structural and Multidisciplinary Optimization
Authors: , , ,
Keywords: design
Abstract:

This paper presents the results of a study on shape optimisation for crashworthiness design of passenger cars based on the software SFE CONCEPT. In contrast to classical morphing approaches, SFE CONCEPT allows for larger geometrical modifications via an implicit parameterisation technique. This is advantageous in particular in the early design phases where different design alternatives are investigated and the optimal and robust geometry needs to be identified. As a first example, the front rail of a standard passenger car is optimised here. This is – as one of the main parts of the body in white – an appropriate example for exploration of optimisation methods. The performance of a classical optimisation approach is analysed and complemented by a robustness analysis where uncertainties in shape parameters are considered.

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