Multi-objective engineering shape optimization using differential evolution interfaced to the Nimrod/O tool

Riley, Mike J. W. and Peachey, Tom and Abramson, David and Jenkins, Karl W. (2010) Multi-objective engineering shape optimization using differential evolution interfaced to the Nimrod/O tool. Conference Series: Materials Science and Engineering, 10 (1). pp. 1-10. ISSN 1757-8981

Full content URL: http://dx.doi.org/10.1088/1757-899X/10/1/012189

Documents
1757-899X_10_1_012189.pdf
[img]
[Download]
[img]
Preview
PDF
1757-899X_10_1_012189.pdf - Whole Document

751kB
Item Type:Article
Item Status:Live Archive

Abstract

This paper presents an enhancement of the Nimrod/O optimization tool by interfacing DEMO, an external multiobjective optimization algorithm. DEMO is a variant of differential evolution – an algorithm that has attained much popularity in the research community, and this work represents the first time that true multiobjective optimizations have been performed with Nimrod/O. A modification to the DEMO code enables multiple objectives to be evaluated concurrently. With Nimrod/O’s support for parallelism, this can reduce the wall-clock time significantly for compute intensive objective function evaluations. We describe the usage and implementation of the interface and present two optimizations. The first is a two objective mathematical function in which the Pareto front is successfully found after only 30 generations. The second test case is the three-objective shape optimization of a rib-reinforced wall bracket using the Finite Element software, Code_Aster. The interfacing of the already successful packages of Nimrod/O and DEMO yields a solution that we believe can benefit a wide community, both industrial and academic.

Additional Information:9th World Congress on Computational Mechanics and 4th Asian Pacific Congress on Computational Mechanics 19–23 July, 2010, Sydney, Australia
Keywords:Shape Optimisation, Multi-objective Optimisation, Evolutionary Algorithm
Subjects:H Engineering > H150 Engineering Design
G Mathematical and Computer Sciences > G160 Engineering/Industrial Mathematics
Divisions:College of Science > School of Engineering
ID Code:12081
Deposited On:06 Oct 2013 19:13

Repository Staff Only: item control page