摘要
用子结构离散方法对多点接触碰撞的动力学问题进行研究，导出了描述多体接触碰撞的动力学方程．通过与碰撞有关约束的Ｌａｇｒａｎｇｅ乘子在撞击方向的分量，确定各物体之间碰撞结束的时刻，通过对脱开的节点的相对矢径的计算，确定脱开的物体是否又一次接触碰撞．数值计算表明，物体之间可能反复碰撞．
The dynamic problems of flexible multibody systems with contact impact are analyzed. The substructure method is used to obtain dynamic equation of flexible multibody systems in impact. The seperation time can be got from the Lagrange multiplier in relation to constrained conditions with impact. It can also be told whether the seperated bodies will contact again by calculating the displacement between the two seperated nodes. It comes to the conclusion that bodies may impact several times according to the analysis.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
1997年第7期45-48,53,共5页
Journal of Shanghai Jiaotong University
基金
国家教委博士点专项基金
国家自然科学基金
关键词
动力学
多点接触碰撞
数值计算
碰撞
dynamic
flexible multibody systems with contact impact
impact several times
numeric calculation
