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利用多体系统离散时间传递矩阵法(MS-DT-TMM)处理同时含有小运动小变形弹性体子系统和大运动多刚体子系统的机械系统,将两子系统的连接处作为各个子系统的边界,采用有限元法建立小变形弹性体子系统动力学方程,采用MS-DT-TMM模拟多体子系统动力学,联合这两套方程可进行总体系统动力学分析,形成了多体系统离散时间传递矩阵法与有限元法的混合方法。通过数值算例证明了方法有效,为扩展MS-DT-TMM的应用范围提供了途径。
The multi-body system discrete time transfer matrix method (MS-DT-TMM) is used to process the mechanical system which contains both the small-motion small deformation elastic body subsystem and the large-motion multi-rigid body subsystem. The connections of the two sub- Boundary, the finite element method is used to establish the dynamic equations of the small deformed elastomer subsystems. The MS-DT-TMM is used to simulate the dynamics of the multibody subsystems. Combined with the two sets of equations, the overall system dynamics analysis can be carried out to form a multi-body system discrete A Hybrid Method of Time Transfer Matrix Method and Finite Element Method. Numerical examples show that the method is effective and provide a way to extend the application of MS-DT-TMM.