AN IMPROVED APPROACH IN THE APPLICATIONOF AN ELASTIC-PLASTIC CONTACT FORCE MODELIN THE MODELLING OF MULTIPLE IMPACTS

Q3 Engineering
M. Warzecha, R. Grzejda
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引用次数: 0

Abstract

This paper presents the modelling of a simultaneous multiple collision occurring between several bodies ofa kinematic chain. An algorithm is proposed that when used with an elastoplastic contact model, allows thephenomena that can occur during a multiple-body collision to be taken into account. These phenomena includethe transition of the collision state from the restitution phase directly to the compression phase or successivecollisions occurring along the same normal. The proposed algorithm can be used with any elastoplastic contactmodel. This paper presents its use with a selected model in a three-body system. Numerical calculations basedon the model have been verified using the Finite Element Method (FEM). The use of the proposed improvedapproach reduces the post-collision velocity prediction error by 2.34% compared to the baseline descriptionof collisions known from the literature.
弹塑性接触力模型在多重碰撞建模中的改进方法
本文建立了运动链多个体间同时发生多重碰撞的模型。提出了一种算法,当与弹塑性接触模型一起使用时,允许考虑在多体碰撞期间可能发生的现象。这些现象包括碰撞状态从恢复阶段直接过渡到压缩阶段或沿同一法线发生的连续碰撞。该算法适用于任何弹塑性接触模型。本文介绍了该方法在三体系统中的应用。基于该模型的数值计算已经用有限元法进行了验证。与文献中已知的碰撞基线描述相比,使用改进的方法将碰撞后速度预测误差降低了2.34%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Tribologia: Finnish Journal of Tribology
Tribologia: Finnish Journal of Tribology Materials Science-Surfaces, Coatings and Films
CiteScore
2.20
自引率
0.00%
发文量
4
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