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中文核心期刊

空间可展机构非光滑力学模型和动力学研究

STUDY ON THE NON-SMOOTH MECHANICAL MODELS AND DYNAMICS FOR SPACE DEPLOYABLE MECHANISMS

  • 摘要: 空间可展机构广泛应用于展开和支撑柔性太阳能帆板和航天工程领域中的有效载荷, 包括抛物面天线、平面相控阵雷达和合成孔径雷达等. 非光滑特性及其相应的动力学现象在空间可展机构的设计中有着非常重要的作用. 该文系统地综述了空间可展机构非光滑力学建模与非线性动力学的研究进展. 首先详细描述了含间隙铰链的接触碰撞力和摩擦力等非光滑特点;然后系统地介绍了含间隙机构的动力学建模方法、分析方法和参数设计;进一步简单介绍了含间隙铰链空间可展机构的非线性动力学特性, 如谐波共振、周期运动的稳定性和各类分岔等;最后提出了空间可展机构非光滑动力系统动力学、稳定性与控制中亟待解决的若干问题.

     

    Abstract: The space deployable mechanism is widely used to develop and support the flexible solar array and payloads including parabolic antenna, plane phased array radar, and synthetic aperture radar in the aerospace engineering field. Non-smooth characteristics and the corresponding dynamic phenomena play a very important role in the design of space deployable mechanism. This paper reviews the state-of-art of non-smooth mechanical modeling and nonlinear dynamics for the space deployable mechanisms. First of all, the non-smooth properties such as the contact impact forces and friction models are elaborated for hinges with clearances. Then, the dynamical modeling methods, analytical approach, and parametric design are systematically presented for the mechanisms with clearances. Moreover, the nonlinear dynamic phenomena such as harmonic resonance, existence and stability of periodic motions, and various kinds of bifurcations are presented for the space deployable mechanisms whose joints are with clearances. Finally, directions for further works on the dynamics, stability and control for the non-smooth dynamical system of space deployable mechanisms are proposed.

     

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