首页|Prediction of Coefficient of Restitution for Impact Elastoplastic Spheres Considering Finite Plate Thickness
Prediction of Coefficient of Restitution for Impact Elastoplastic Spheres Considering Finite Plate Thickness
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Collisions between objects are a relatively common phenomenon in nature.Analyses of collision processes can greatly contribute to solving problems such as impact-rub faults and particle impacts.The coefficient of restitu-tion is a critical parameter in the analysis of collision processes.Many experiments have shown that the coefficient of restitution is closely related to the plate thickness,and the smaller the plate thickness,the more inaccurate the coefficient of restitution predicted by the existing model,which seriously affects the process of collision analysis.To remedy this shortcoming,this paper proposes a plate thickness influence factor with the ratio of sphere diameter to plate thickness as the variable.The plate thickness influence factor can optimize the coefficient of restitution model to effectively predict the coefficient of restitution of impacting elastoplastic spheres with finite plate thickness.Finally,the validity of the new model is verified using a large amount of experimental data.
CollisionCoefficient of restitutionEnergy lossSphere
Yunfeng Fan、Hao Wang、Tao Zhou、Limin Zou、Zhinong Jiang、Minghui Hu
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State Key Laboratory of High-end Compressor and System Technology,Beijing University of Chemical Technology,Beijing 100029,China
China Ship Research and Development Academy,Beijing 100101,China
Key Lab of Engine Health Monitoring-Control and Networking of Ministry of Education,Beijing University of Chemical Technology,Beijing 100029,China
Beijing Key Laboratory of High-End Mechanical Equipment Health Monitoring and Self-Recovery,Beijing University of Chemical Technology,Beijing 100029,China
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Joint Fund of the Ministry of Education of ChinaYouth Talent Support Project
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