| TOPOLOGY OPTIMIZATION OF TRUSS STRUCTURE WITH FUNDAMENTAL FREQUENCY AND FREQUENCY DOMAIN DYNAMIC RESPONSE CONSTRAINTS |
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| 引用本文： | Pan Jin Wang De-yu. TOPOLOGY OPTIMIZATION OF TRUSS STRUCTURE WITH FUNDAMENTAL FREQUENCY AND FREQUENCY DOMAIN DYNAMIC RESPONSE CONSTRAINTS[J]. Acta Mechanica Solida Sinica, 2006, 19(3): 231-240. DOI: 10.1007/s10338-006-0628-2 |
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| 作者姓名： | Pan Jin Wang De-yu |
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| 作者单位： | State Key Lab of Ocean Engineering，School of Naval Architecture，Ocean and Civil Engineering，Shanghai Jiao Tong University，Shanghai 200030，China |
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| 基金项目： | Project supported by the Innovation Fund of Space Technology. |
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| 摘 要： | In this paper, adaptive genetic algorithm (AGA) is applied to topology optimization of truss structure with frequency domain excitations. The optimization constraints include fundamental frequency, displacement responses under force excitations and acceleration responses under foundation acceleration excitations. The roulette wheel selection operator, adaptive crossover and mutation operators are used as genetic operators. Some heuristic strategies are put forward to direct the deletion of the extra bars and nodes on truss structures. Three examples demonstrate that the proposed method can yield the optimum structure form and the lightest weight of the given ground structure while satisfying dynamic response constraints.
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| 关 键 词： | 基础频率 动态响应 适应遗传算法 拓扑最优化 桁架结构 |
| 收稿时间： | 2005-04-29 |
| 修稿时间： | 2006-07-28 |
TOPOLOGY OPTIMIZATION OF TRUSS STRUCTURE WITH FUNDAMENTAL FREQUENCY AND FREQUENCY DOMAIN DYNAMIC RESPONSE CONSTRAINTS |
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| Pan Jin,Wang De-yu. TOPOLOGY OPTIMIZATION OF TRUSS STRUCTURE WITH FUNDAMENTAL FREQUENCY AND FREQUENCY DOMAIN DYNAMIC RESPONSE CONSTRAINTS[J]. Acta Mechanica Solida Sinica, 2006, 19(3): 231-240. DOI: 10.1007/s10338-006-0628-2 |
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| Authors: | Pan Jin Wang De-yu |
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| Affiliation: | 1. IDMEC, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal;2. ISEL – Instituto Superior de Engenharia de Lisboa, Rua Conselheiro Emídio Navarro 1, 1959-007 Lisboa, Portugal |
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| Abstract: | In this paper, adaptive genetic algorithm (AGA) is applied to topology optimization of truss structure with frequency domain excitations. The optimization constraints include fundamental frequency, displacement responses under force excitations and acceleration responses under foundation acceleration excitations. The roulette wheel selection operator, adaptive crossover and mutation operators are used as genetic operators. Some heuristic strategies are put forward to direct the deletion of the extra bars and nodes on truss structures. Three examples demonstrate that the proposed method can yield the optimum structure form and the lightest weight of the given ground structure while satisfying dynamic response constraints. |
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| Keywords: | fundamental frequency dynamic response adaptive genetic algorithm topology optimization truss structure |
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