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Multi-parameter optimization of lightweight composite triangular truss structure based on response surface methodology

Multi-parameter optimization of lightweight composite triangular truss structure based on response surface methodology
Multi-parameter optimization of lightweight composite triangular truss structure based on response surface methodology
A multi-parameter optimization approach for a lightweight FRP composite triangular truss under nonlinear structural response constraints is presented in this paper. The composite truss exhibited bilinear behavior under three-point bending which was observed by both experimental and numerical investigation. Sensitivity analysis was conducted to evaluate the effects of geometric parameters on the flexural performance of the composite truss. A response surface, developed from a finite element analysis, was employed to replicate the outputs of nonlinear structural responses with respect to four key geometric parameters. Gradient-based and Genetic Algorithm optimization processes were selected and implemented from the MATLAB Optimization Toolbox. Final adjustments to the optimal design, obtained using MATLAB, were made according to the results of sensitivity analysis. The results show that significant improvement in terms of weight saving were achieved by adopting the proposed optimization design procedure.
A. polymer–matrix composites (PMCs), B. mechanical properties, C. finite element analysis (FEA), D. statistical method
0263-8223
107-116
Ju, S.
ac05b221-9216-4c15-b8ba-cceb1ac8439f
Shenoi, R.A.
a37b4e0a-06f1-425f-966d-71e6fa299960
Jiang, D.
62f7c7c4-4812-476c-a3f2-17bf08f35ed8
Sobey, A.J.
e850606f-aa79-4c99-8682-2cfffda3cd28
Ju, S.
ac05b221-9216-4c15-b8ba-cceb1ac8439f
Shenoi, R.A.
a37b4e0a-06f1-425f-966d-71e6fa299960
Jiang, D.
62f7c7c4-4812-476c-a3f2-17bf08f35ed8
Sobey, A.J.
e850606f-aa79-4c99-8682-2cfffda3cd28

Ju, S., Shenoi, R.A., Jiang, D. and Sobey, A.J. (2013) Multi-parameter optimization of lightweight composite triangular truss structure based on response surface methodology. Composite Structures, 97, 107-116. (doi:10.1016/j.compstruct.2012.10.025).

Record type: Article

Abstract

A multi-parameter optimization approach for a lightweight FRP composite triangular truss under nonlinear structural response constraints is presented in this paper. The composite truss exhibited bilinear behavior under three-point bending which was observed by both experimental and numerical investigation. Sensitivity analysis was conducted to evaluate the effects of geometric parameters on the flexural performance of the composite truss. A response surface, developed from a finite element analysis, was employed to replicate the outputs of nonlinear structural responses with respect to four key geometric parameters. Gradient-based and Genetic Algorithm optimization processes were selected and implemented from the MATLAB Optimization Toolbox. Final adjustments to the optimal design, obtained using MATLAB, were made according to the results of sensitivity analysis. The results show that significant improvement in terms of weight saving were achieved by adopting the proposed optimization design procedure.

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e-pub ahead of print date: 7 November 2012
Published date: March 2013
Keywords: A. polymer–matrix composites (PMCs), B. mechanical properties, C. finite element analysis (FEA), D. statistical method
Organisations: Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 349499
URI: http://eprints.soton.ac.uk/id/eprint/349499
ISSN: 0263-8223
PURE UUID: 27497c80-12cd-4d28-a9c9-a011e257888d
ORCID for A.J. Sobey: ORCID iD orcid.org/0000-0001-6880-8338

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Date deposited: 06 Mar 2013 12:22
Last modified: 05 Nov 2019 01:45

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Contributors

Author: S. Ju
Author: R.A. Shenoi
Author: D. Jiang
Author: A.J. Sobey ORCID iD

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