牛顿碰撞恢复系数评价下的碰撞力研究进展  

Advance in Impact Force Model Research with Evolution of Newton Restitution Coefficient

作　　者：王旭鹏[1] 林文周[1] 刘更[2] 马尚君[2] 佟瑞庭[2] Wang Xupeng;Lin Wenzhou;Liu Geng;Ma Shangjun;Tong Ruiting(Department of Industrial Design,Xi'an University of Technology,Xi'an 710048,China;School of Mechanical Engineering,Northwestern Polytechnical University,Xi'an 710072,China)

机构地区：[1]西安理工大学工业设计系,西安710048 [2]西北工业大学机电学院,西安710072

出　　处：《机械科学与技术》2020年第10期1526-1533,共8页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家自然科学基金项目(51275423,51505381,51675429);陕西省教育厅自然专项基金项目(17JK0551);西安理工大学博士启动基金项目(106-451117002)资助。

摘　　要：为了辨识间隙铰链处碰撞力的适用范围,更加准确地描述机械系统中普遍存在的碰撞现象及其对机械系统动态特性的影响规律,以牛顿碰撞恢复系数作为评价指标,以间隙铰链处轴、轴承间的碰撞和恢复过程为例,在不同恢复系数下和碰撞力模型下进行数值模拟及对比分析。研究发现,不同碰撞恢复系数下各模型碰撞过程的最大碰撞力、最大变形量及实际碰撞恢复系数差异较大。因此,实际选择碰撞力模型时应依据碰撞初始条件和材料特性等进行综合考虑。In order to identify the application scope of impact force models in clearance joint,and more accurately describe the collision phenomenon in mechanical system,the Newton restitution coefficient is defined as evaluation index,and the joint of journal-bearing is used as example.Then a great number of numerical results are presented based on different impact force models with different coefficient of restitution.It can be concluded that the maximum value of impact force and deformation,as well as actual restitution have obvious difference for different impact forces,so the selection of impact force model should be considered comprehensively with initial collision conditions and material properties.

关 键 词：间隙铰链 碰撞力模型 恢复系数 机械系统 

分 类 号：TG156[金属学及工艺—热处理]