期刊
CMES-COMPUTER MODELING IN ENGINEERING & SCIENCES
卷 128, 期 3, 页码 1179-1196出版社
TECH SCIENCE PRESS
DOI: 10.32604/cmes.2021.016950
关键词
Thermoelastic structure; topology optimization; moving morphable components; minimum structural compliance; minimum strain energy
资金
- National Nat-ural Science Foundation of China [11672057, 12002278, U1906233]
- National Key R&D Program of China [2017YFC0307201]
- Key R&D Program of Shandong Province [2019JZZY010801]
- Fundamental Research Funds for the Central Universities [NWPUG2020KY05308]
This study investigates structural topology optimization of thermoelastic structures considering two kinds of objectives with a specified available volume constraint. The moving morphable components (MMC) framework is adopted to explicitly express the configuration evolution and can substantially reduce the number of design variables. The optimization results show that the objective function with the minimum structural strain energy can achieve a better performance than that from structural compliance design for thermoelastic structural strength optimization.
This study investigates structural topology optimization of thermoelastic structures considering two kinds of objectives of minimum structural compliance and elastic strain energy with a specified available volume constraint. To explicitly express the configuration evolution in the structural topology optimization under combination of mechanical and thermal load conditions, the moving morphable components (MMC) framework is adopted. Based on the characteristics of the MMC framework, the number of design variables can be reduced substantially. Corresponding optimization formulation in the MMC topology optimization framework and numerical solution procedures are developed for several numerical examples. Different optimization results are obtained with structural compliance and elastic strain energy as objectives, respectively, for thermoelastic problems. The effectiveness of the proposed optimization formulation is validated by the numerical examples. It is revealed that for the optimization design of the thermoelastic structural strength, the objective function with the minimum structural strain energy can achieve a better performance than that from structural compliance design.
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