期刊
MECHANISM AND MACHINE THEORY
卷 85, 期 -, 页码 172-188出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.mechmachtheory.2014.11.020
关键词
Contact-impact events; Viscoelastic force models; Dynamic response
资金
- Portuguese Foundation for the Science and Technology [SFRH/BD/78251/2011, SFRH/BPD/77831/2011]
- Fundação para a Ciência e a Tecnologia [SFRH/BD/78251/2011, SFRH/BPD/77831/2011] Funding Source: FCT
The nature of the constitutive contact force law utilized to describe contact-impact events in solid contact interfaces plays a key role in predicting the response of multibody mechanical systems and in the simulation of engineering applications. The goal of this work is to present a comparative study on the most relevant existing viscoelastic contact force models. In the sequel of this process, their fundamental characteristics are examined and their performances evaluated. Models developed based on the Hertz contact theory and augmented with a damping term to accommodate the dissipation of energy during the impact process, which typically is a function of the coefficient of restitution between the contacting solids, are considered in this study. In particular, the identified contact force models are compared in the present study for simple solid impact problems with the sole purpose of comparing the performance of the various models and examining the corresponding system behavior. The outcomes indicate that the prediction of the dynamic behavior of contacting solids strongly depends on the selection of the contact force model. (C) 2014 Elsevier Ltd. All rights reserved.
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