双层超弹性铰链展开冲击分析与优化

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振动与冲击 ›› 2016, Vol. 35 ›› Issue (9) : 20-27.

论文

双层超弹性铰链展开冲击分析与优化

杨慧，郭宏伟，王岩，刘荣强，陶建国

作者信息 +

Dynamic analysis and optimization of double-layer tape-spring hinge

YANG Hui, LIU Rong-qiang, WANG Yan, GUO Hong-wei, TAO Jian-guo

Author information +

文章历史 +

摘要

超弹性铰链依靠自身大挠度弹性折叠存储的弹性势能实现弹性展开，集驱动、旋转和锁定于一体。研究了双层超弹性铰链展开冲击性能，提出了降低双层超弹性铰链展开冲击优化方法。为了确保有限元模型的准确性，搭建实验平台对双层超弹性铰链进行动力学展开性能测试，基于实验结果对有限元模型进行修正。采用正交法试验设计建立展开冲击特性代理模型。以展开冲击角度和锁定时间最小为目标函数，采用改进的非支配遗传算法对双层超弹性铰链进行参数化优化设计，得到最优结构尺寸。对最优结构尺寸进行有限元展开分析，误差不大于5.008%，表明代理模型准确性。最优非等厚度与等厚度双层超弹性铰链对比，发现前者冲击角度和锁定时间分别降低52.154%和29.104 %，优化后结构的冲击得到明显改善。通过参数研究发现，展开冲击对外侧带簧厚度较为敏感，锁定时间随带簧厚度增加表现出先减少后增大的趋势。

Abstract

Flexible tape-spring hinges can be folded elastically and are able to self-deploy by releasing stored strain energy with fewer component parts and slight weights. Deploying dynamics behaviors of double-layer tape-spring (DLTS) hinge was optimized for reducing deployment shock angle. A deploying experiment is set up to verify the validation of the numerical models for the double-layer tape-spring hinge. The deployment shock angle and locked time are set as objectives, the thickness of outer and inner layer tape-spring on outer bending direction of the DLTS hinge are set as design variables. The modified non-dominated sorting genetic algorithm is employed to achieve the optimal design of the DLTS hinge. The finite element models for the non-equal thickness optimal design based on numerical method are established and validated the optimization results with relative errors no more than 5.008 %. Compared deployment behaviors between the non-equal thickness optimal design and equal thickness configuration for the DLTS hinge, the deployment shock angle and locked time for the former configuration are reduced by 52.154 % and 29.104 % respectively. The parameter study shows that the deployment shock angle is more sensitive to the outer layer thickness of tape-spring, and the locked time is first decreased and then increased with the thickness greater.

导出引用

杨慧，郭宏伟，王岩，刘荣强，陶建国. 双层超弹性铰链展开冲击分析与优化[J]. 振动与冲击, 2016, 35(9): 20-27

YANG Hui, LIU Rong-qiang, WANG Yan, GUO Hong-wei, TAO Jian-guo. Dynamic analysis and optimization of double-layer tape-spring hinge[J]. Journal of Vibration and Shock, 2016, 35(9): 20-27

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