Conventionally, design domain of topology optimization is predefined and is not adjusted in the design optimization process since designers are required to specify the design domain in advance. However, it is difficult for a fixed design domain to satisfy design requirements such as domain sizing adjustment or boundaries change. In this paper, Domain Composition Method (DCM) for structural optimization is presented and it deals with the design domain adjustment and the material distribution optimization in one framework. Instead of treating design domain as a whole, DCM divides domain into several subdomains. Additional scaling factors and subdomain transformations are applied to describe changes between different designs. It then composites subdomains and solve it as a whole in the updated domain. Based on the domain composition, static analysis with DCM and sensitivity analysis are derived. Consequently, the design domain and the topology of the structure are optimized simultaneously. Finally, the effectiveness of the proposed DCM for structural optimization is demonstrated through different numerical examples.
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ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
August 17–20, 2014
Buffalo, New York, USA
Conference Sponsors:
- Design Engineering Division
- Computers and Information in Engineering Division
ISBN:
978-0-7918-4632-2
PROCEEDINGS PAPER
Domain Composition Method for Structural Optimization
Wei Song,
Wei Song
Rutgers, The State University of New Jersey, Piscataway, NJ
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Hae Chang Gea,
Hae Chang Gea
Rutgers, The State University of New Jersey, Piscataway, NJ
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Bin Zheng
Bin Zheng
Chinese Academy of Science, Chongqing, China
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Wei Song
Rutgers, The State University of New Jersey, Piscataway, NJ
Hae Chang Gea
Rutgers, The State University of New Jersey, Piscataway, NJ
Bin Zheng
Chinese Academy of Science, Chongqing, China
Paper No:
DETC2014-35059, V02BT03A012; 10 pages
Published Online:
January 13, 2015
Citation
Song, W, Gea, HC, & Zheng, B. "Domain Composition Method for Structural Optimization." Proceedings of the ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 2B: 40th Design Automation Conference. Buffalo, New York, USA. August 17–20, 2014. V02BT03A012. ASME. https://doi.org/10.1115/DETC2014-35059
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