| 多点接触碰撞的数值计算 |
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| 引用本文： | 刘锦阳,洪嘉振.多点接触碰撞的数值计算[J].上海交通大学学报,1997,31(7):45-48,53. |
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| 作者姓名： | 刘锦阳 洪嘉振 |
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| 作者单位： | 上海交通大学工程力学系 |
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| 基金项目： | 国家教委博士点专项基金,国家自然科学基金 |
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| 摘 要： | 用子结构离散方法对我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，物体之间可反复碰撞。
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| 关 键 词： | 动力学 多点接触碰撞 数值计算 碰撞 |
Numeric Calculation of Multibody System with Contact Impact |
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| Liu Jinyang,Hong Jiazhen.Numeric Calculation of Multibody System with Contact Impact[J].Journal of Shanghai Jiaotong University,1997,31(7):45-48,53. |
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| Authors: | Liu Jinyang Hong Jiazhen |
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| Abstract: | 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. |
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| Keywords: | dynamic flexible multibody systems with contact impact impact several times numeric calculation |
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