Energetic Coefficient of Restitution for a Planar Two-Body Oblique Collision with Friction

Energetic Coefficient of Restitution for a Planar

Two-Body Oblique Collision with Friction

姚文莉;陈滨;刘才山

【期刊名称】《清华大学学报（英文版）》 【年(卷),期】2004(009)006

【摘要】Although the coefficient of restitution was originally thought to be only a material property, the coefficient of restitution also depends upon initial conditions as well as on the frictional effect for oblique collisions. The objective of this paper is to demonstrate a method for obtaining the coefficient of restitution for oblique collisions and thereby to provide a theoretical guide for collision experiments. In this paper, we derive expressions for the energetic coefficient of restitution (e*) based on general normal contact deformation law, by which the value of e* can be obtained according to the initial conditions. An example shows that the results calculated by the derived expressions are reasonable. 【总页数】5页(684-687,693)

【关键词】oblique collision;energetic coefficient of restitution;tangential contact modes

【作者】姚文莉;陈滨;刘才山

【作者单位】Department of Mechanics and Engineering Science,Peking University,Beijing 100871,China;College of Science,Shandong University of

Science

and

Technology,Taian

271019,China;Department

of