Simulation and experimental investigation on the eccentric collision in multi-body systems considering the friction effect

CHEN Peng,LIU Jinyang, HONG Jiazhen

Journal of Vibration and Shock ›› 2018, Vol. 37 ›› Issue (1) : 1-7.

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Journal of Vibration and Shock ›› 2018, Vol. 37 ›› Issue (1) : 1-7.

Simulation and experimental investigation on the eccentric collision in multi-body systems considering the friction effect

  • CHEN Peng ,   LIU Jinyang,  HONG Jiazhen 
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Abstract

A dynamic formulation based on the component mode synthesis method was proposed for solving the oblique contact-impact problems in multibody systems. The contact bodies were divided into the contact zone part and un-contact zone part. The degrees of freedom of the un-contact zone part were reduced by the modal reduction, which improves the computational efficiency on condition that the accuracy is guaranteed. Impacts in the normal direction and tangential direction were modeled using the penalty method and the modified Coulumb friction model respectively. A contact system consisting a steel rod and a PVC plate was considered. An eccentric collision considering the friction effects was investigated experimentally, and the strain and velocity response of the plate were measured by the strain gauges and the 3D-DIC measuring technique. The comparison between the numerical results and experimental results proves the accuracy of the formulation proposed. Meanwhile, the influence of the relative velocity on the friction coefficient was investigated. 

Key words

component mode synthesis method / contact-impact / friction / experiment

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CHEN Peng,LIU Jinyang, HONG Jiazhen . Simulation and experimental investigation on the eccentric collision in multi-body systems considering the friction effect[J]. Journal of Vibration and Shock, 2018, 37(1): 1-7

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