Riley, Mike J. W., Peachey, Tom, 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
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1757-899X_10_1_012189.pdf - Whole Document 751kB |
Item Type: | Article |
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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 |
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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 |
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