Multi-objective optimization for composite thin-walled circular tube hinge of space deployable structures

被引：0
|
作者：
Zhang Y. [1 ]
Sun B. [1 ]
Wang Z. [2 ]
Zhao Z. [2 ]
Chen Y. [2 ]
机构：
[1] School of Mechanical Engineering, Southeast University, Nanjing
[2] Shanghai Institute of Satellite Engineering, Shanghai
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2019年 / 38卷 / 19期
关键词：
Composite thin-walled circular pipe hinges; Multi-objective optimization; NSGA-Ⅱ genetic algorithm; RBF neural network; Space deployable structure;
D O I：
10.13465/j.cnki.jvs.2019.19.033
中图分类号：
学科分类号：
摘要：
Composite thin-walled circular tube hinges have broad application prospects in large space deployable structures, such as, satellite antennas and solar wings, and their structural parametric design greatly affects their working performance in space. Here, in order to improve their mechanical performance, firstly, the analytical and finite element models for a composite tape measure spring were established to analyze its bending characteristics. Then the finite element model for a composite thin-walled circular tube hinge was established to study its folding and torsional characteristics and analyze effect laws of structural parameters on the hinge performance. The results showed that increasing the ratio of slotting length to width and reducing the ratio of hinge thickness to diameter can obviously improve the hinge's bending and torsional performance. The hinge's structural parameters were taken as design variables to build a multi-objective optimization mathematical model. The optimal Latin hyper-cubic test design method was used to construct the RPF neutral network agent model among structural parameters and hinge's peak bending moment, maximum stress and torsional stiffness, and it was optimized using the NSGA-Ⅱ genetic algorithm. The optimization results showed that the hinge's peak bending moment is increased by 44.8%, its torsional rigidity is increased by 110%, and its mass is decreased by 20.4%, so the hinge's mechanical performance is improved and meanwhile its mass is reduced to enhance the hinge mechanism's self-driving ability and self-locking one; the study results provide a theoretical basis for practical engineering application of composite thin-walled circular tube hinges in space deployable structures. © 2019, Editorial Office of Journal of Vibration and Shock. All right reserved.
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页码：218 / 225and241
相关论文
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