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| Multi-objective topology optimization of support structure for flexible telescope skin |
| Received:November 26, 2016 Revised:May 19, 2017 |
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| DOI：10.7511/jslx20161126001 |
| KeyWord:topology optimization multi-objective optimization flexible skin telescope morphing genetic algorithm |
| Author | Institution |
| 纪斌 |
南京航空航天大学 机械结构力学及控制国家重点实验室, 南京 |
| 金栋平 |
南京航空航天大学 机械结构力学及控制国家重点实验室, 南京 |
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| Abstract: |
| NSGA-Ⅱ with connectivity analysis is employed for the multi-objective topology optimization of the support structure for flexible telescope skin,in which bit-matrix is used as the representation of a chromosome.The objective functions of multi-objective topology optimization are established by analyzing the optimization target of the support structure.The design domain is discretized by hexagon and the mapping between design domain and the bit-matrix is established subsequently.In order to improve the efficiency,the connectivity analysis is put forward.The objectives such as the performance of in-plane and out-of-plane of the feasible individuals are obtained by FEA,and the NSGA-Ⅱ is realized by penalizing the infeasible individuals.A sequence of the feasible configurations of the support structure is obtained finally.It can be seen from the results that the method in this paper can provide feasible and effective solutions for multi-objective topology optimization of the support structure for flexible telescope skin and also solve other multi-objective topology optimization problems in 2D. |