航天器柔性多体结构锁定撞击动力学分析与试验验证

摘要

介绍了航天器柔性多体结构撞击动力学分析的工程背景和研究现状,阐述了撞击动力学分析软件FMIDASAD的理论模型和数值计算方法,并应用地面展开锁定试验验证了计算结果.研究表明:撞击动力学分析软件FMIDASAD能够合理模拟柔性多体结构在展开锁定撞击过程中的动力学基本特征,其预示的撞击载荷幅值与试验结果较为接近,可以满足工程需要.%The engineering background and research status of the impact dynamics for flexible multi-body spacecraft structures are introduced.The theoretical model and numerical solution of FMIDASAD software are described, and the computational results are verified by ground test.It is shown that FMIDASAD could capture the main dynamic features of the latching process for flexible multi-body structures, and its predictive impact load amplitude agrees well with test results.