多体结构连接部件的有限单元模型  

Finite Element Model for the Joints in Multi body Structures

作　　者：李东旭[1] 孙丕忠[1] 唐乾刚[1] 

机构地区：[1]国防科技大学航天与材料工程学院,湖南 长沙 410073

出　　处：《国防科技大学学报》2000年第6期6-9,共4页Journal of National University of Defense Technology

基　　金：国家"863"应用基础研究项目基金资助(863-2)

摘　　要：针对多体结构中连接部位带来的运动不连续问题 ,提出了将连接部件不作节点处理而作单元看待的设想。从力学基本原理出发推导了单元的刚度矩阵与阻尼矩阵 。A finite element model for the joints in multi body structures has been presented. Based on the mechanical principles, the stiffness matrix and damping matrix of the finite element of the joint have been deduced. By this way, the non continuous physical system becomes continuous mathematically. So, the idea presented in this paper gives us another way to analyze the dynamical problem in a multi body structures.

关 键 词：多体结构 连接部件 连接单元 有限单元模型 航天 

分 类 号：V414[航空宇航科学与技术—航空宇航推进理论与工程]