| Energetic Coefficient of Restitution for a Planar Two-Body Oblique Collision with Friction |
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| 作者姓名： | 姚文莉 陈滨 刘才山 |
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| 作者单位： | [1]DepartmentofMechanicsandEngineeringScience,PekingUniversity,Beijing100871,China／／CollegeofScience,ShandongUniversityofScienceandTechnology,Taian271019,China [3]DepartmentofMechanicsandEngineeringScience,PekingUniversity,Beijing100871,China |
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| 基金项目： | SupportedbytheNationalNaturalScienceFoundationofChina(No.10272002) |
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| 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.
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| 关 键 词： | 碰撞实验 斜向碰撞 能量系数 切线接触模型 归因系数 摩擦 |
Energetic Coefficient of Restitution for a Planar Two-Body Oblique Collision with Friction |
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| YAO Wenli,CHEN Bin,LIU Caishan.Energetic Coefficient of Restitution for a Planar Two-Body Oblique Collision with Friction[J].Tsinghua Science and Technology,2004,9(6):684-687,693. |
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| Authors: | YAO Wenli CHEN Bin LIU Caishan |
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| Institution: | YAO Wenli,CHEN Bin,LIU CaishanDepartment of Mechanics and Engineering Science,Peking University,Beijing 100871,China College of Science,Shandong University of Science and Technology,Taian 271019,China |
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| Abstract: | 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. |
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| Keywords: | oblique collision energetic coefficient of restitution tangential contact modes |
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