| 考虑铰摩擦的柔性太阳阵展开动力学研究 |
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| 引用本文： | 段柳成,李海泉,刘晓峰,蔡国平.考虑铰摩擦的柔性太阳阵展开动力学研究[J].力学学报,2014,46(6):957-970. |
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| 作者姓名： | 段柳成 李海泉 刘晓峰 蔡国平 |
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| 作者单位： | 上海交通大学工程力学系, 海洋工程国家重点实验室, 上海 200240 |
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| 基金项目： | 国家自然科学基金(11132001,11272202);航空科学基金(20120157002);上海市教委科研重点项目(14ZZ021)资助~~ |
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| 摘 要： | 研究了空间漂浮航天器太阳阵展开与锁定过程的刚柔耦合动力学问题. 基于Jourdain 速度变分原理和单项递推组集方法, 建立了太阳阵展开与锁定过程的刚柔耦合多体系统动力学模型,采用虚功率原理推导了铰摩擦对系统动力学方程的贡献. 在以上动力学模型中引入3-D 鬃毛摩擦模型来研究铰链的摩擦特性对太阳阵展开动力学的影响. 所建动力学模型的正确性通过与商业软件ADAMS 和NASTRAN 的联合仿真对比得到了验证,该模型能够有效地预测太阳阵的展开历程以及航天器姿态的动态行为.
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| 关 键 词： | 柔性太阳阵 展开动力学 铰摩擦 单向递推组集 虚功率原理 |
| 收稿时间： | 2014-05-30 |
DEPLOYMENT DYNAMICS OF FLEXIBLE SOLAR ARRAYS CONSIDERING FRICTIONAL JOINT |
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| Institution: | Department of Engineering Mechanics, State Key Laboratory of Ocean Engineering, Shanghai Jiaotong University, Shanghai 200240, China |
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| Abstract: | The deployment and locking of solar arrays of a free-floating spacecraft is studied in this paper. The rigid-flexible coupling dynamic model for describing the deployment and locking process is established using the Jourdain's velocity variational principle and the approach of forward recursive formulation. The contribution of joint friction to the dynamic equation of the system is derived based on the virtual power principle. The 3-D bristle friction model is introduced to study the influence of joint friction on the deployment dynamics of solar arrays. The validity of the proposed model is verified through the comparison of simulation results with those using the commercial software ADAMS and NASTRAN, and this model is available for predicting the deployment process of solar arrays and the attitude motion of spacecraft. |
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