空间可展桁架结构等效动力学模型研究进展与展望

Research Progress and Prospect of Equivalent Dynamics Model of Space Deployable Truss Structures

随着航天重大工程的逐步实施,桁架式空间可展结构正朝着大型化、轻量化和多功能等方向发展,该类桁架结构具有周期性、大柔度、构型复杂等特点。为满足大型空间结构的高精度、高可靠性要求,其动力学建模、非线性振动与振动控制等问题越来越复杂且难于处理。因此,大型空间可展结构的等效连续体建模成为研究热点。着重介绍大型空间可展桁架结构等效动力学建模的研究现状,综述了等效动力学建模的研究对象、方法及已取得的成果,提炼出等效动力学建模和与之相应的非线性振动与振动控制研究领域中亟待深入研究的关键科学问题。

With the gradual implementation of the major projects in aerospace engineering,space deployable truss structure is heading towards the direction of large-scale,lightweight and multi-function,and this type of truss has the features of repeatability,flexibility and complex configuration.To satisfy the high precision and high reliability demands of the large space structure,the studies on dynamic modeling,nonlinear vibration and vibration control are getting more and more complicated and difficult to deal with.Therefore,the research on the equivalent continuum modeling of the large space deployable structure has become a crucial and hot topic.The paper presents the research situation about the equivalent dynamic modeling of the large space deployable truss structure,and provides an overview of the achievements in the equivalent dynamic modeling object and method.The key scientific issues seriously needed to be further studied in the fields of equivalent dynamic modeling and the corresponding nonlinear vibration and vibration control are extracted.