Improvement of Contact Force Calculation Model Considering Influence of Yield Strength on Coefficient of Restitution

Xichun Liu, Wei Chen and Hu Shi
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Xichun Liu: Key Laboratory of Education Ministry for Modern Design and Roter-Bearing System, Xi’an Jiaotong University, Xi’an 710049, China
Wei Chen: Key Laboratory of Education Ministry for Modern Design and Roter-Bearing System, Xi’an Jiaotong University, Xi’an 710049, China
Hu Shi: School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an 710049, China

Energies, 2022, vol. 15, issue 3, 1-15

Abstract: Aiming at the problem that the current coefficient of restitution model cannot effectively predict energy dissipation in the multi-body system collision process, a coefficient of restitution model considering the yield strength is proposed in this article. As an important parameter for energy loss and material deformation prediction during collision, the coefficient of restitution has an important influence on the accurate calculation of contact force. The current main coefficient of restitution models are compared and analyzed in this article. In view of the large difference between the results obtained by different models on the same parameter, through the use of ANSYS/LS–DYNA for dynamic simulation, the influence of different yield strengths on the coefficient of restitution is studied. Then, the article establishes a new coefficient of restitution model considering the yield strength combined with the J–G model, and verifies the effectiveness of the model in the article using experimental results. At the same time, the article compares the new coefficient of restitution model with the constant coefficient of restitution model, and further studies the effect of the coefficient of restitution on the dynamic results.

Keywords: multi-body system; coefficient of restitution model; yield strength (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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