有争议的碰撞恢复系数研究进展  

Advance in controversial restitution coefficient study for impact problems

作　　者：姚文莉[1] 岳嵘[2] 

机构地区：[1]青岛理工大学理学院,山东青岛266520 [2]山东科技大学数学与系统科学学院,山东青岛266590

出　　处：《振动与冲击》2015年第19期43-48,共6页Journal of Vibration and Shock

基　　金：国家自然科学基金(11272167)

摘　　要：碰撞恢复系数是研究碰撞问题的重要且颇具争议的参数,对于该参数争议的焦点在于:1哪一个碰撞恢复系数的定义更合理;2碰撞恢复系数是否只与材料相关;3可否表达为其他变量的函数;4是否还存在其他更稳定的碰撞过程中的不变量;5不同类型的碰撞恢复系数如何应用。围绕上述焦点问题,从定义等价性、优劣、研究方法以及应用方式等各个角度进行了回顾,分析了利用碰撞恢复系数来解决碰撞问题中存在的问题,并探讨了今后的研究发展方向。Restitution coefficient for impact problems is an important and controversial parameter. The controversial problems are as follows： which definition is more appropriate among those in common use; whether or not the coefficients are only related to material of colliding bodies; whether restitution coefficients can be expressed as a function of other variables; whether is there any another coefficient with stable and constant properties during collision; how to use different types of restitution coefficients？ Here,revolving around these problems,the review on impact problems was made. The existing problems were analyzed when solving the collision problems by using restitution coefficients and the future study direction was discussed.

关 键 词：碰撞恢复系数 斜碰撞 多体系统 摩擦 瞬时冲量法 

分 类 号：O313.4[理学—一般力学与力学基础]