多体系统动力学碰撞问题研究综述  

REVIEW OF IMPACT PROBLEM FOR DYNAMICS OF MULTIBODY SYSTEM

作　　者：董富祥[1] 洪嘉振[1] 

机构地区：[1]上海交通大学工程力学系,上海200240

出　　处：《力学进展》2009年第3期352-359,共8页Advances in Mechanics

基　　金：国家自然科学基金(10772113)资助项目~~

摘　　要：对近年来多体系统碰撞动力学研究进展进行了评述,包括碰撞动力学建模理论、数值算法和实验方面的进展情况.根据各自不同假设条件将建模方法分为冲量动量法、连续碰撞力模型和基于连续介质力学的有限元方法,比较了各种建模方法在碰撞过程描述和数值性态方面的优势和局限性;对碰撞动力学实验在非接触式测量方面取得的最新进展进行了介绍,总结了实验对以上建模理论的验证研究,展示了实验研究方面的一些新发现.最后基于工程实际的需求提出多体系统碰撞动力学面临的新挑战.A review of recent developments in the impact dynamics of the multibody systems is presented, including recent advances in modeling theory of the impact dynamics, numerical algorithms and experiments. The modeling theories are divided into three groups： the impulse-momentum method, the continuous impact force model and the finite method based on continuum mechanics, the advantages and limitations of which are compared in respect of impact process description and numerical behavior. The latest developments of impact dynamics experiments in the field of non-contact measurement are reviewed, and relevant experimental studies are summarized for validating the above mentioned methods. Then some new discoveries in experiments are shown, and the new challenges in front of the impact dynamics of multibody systems are proposed based on the demand from engineering practice.

关 键 词：多体系统动力学 碰撞 冲量动量法 连续碰撞力模型 有限元方法 实验研究 

分 类 号：O313.7[理学—一般力学与力学基础] G633.7[理学—力学]