Abstract:A dynamic formulation based on the component mode synthesis method is proposed for solving the oblique contact-impact problems in multibody system. The contact bodies are divided into contact zones and un-contact zones. The degrees of freedom of the un-contact zones can be reduced by modal reduction, which improves the computational efficiency on condition that the accuracy is guaranteed. Impacts in the normal direction and tangential direction are modeled using the penalty method and the modified Coulumb friction model, respectively. A contact system consisting a steel rod and a PVC plate is considered. An eccentric collision considering the friction effects is investigated experimentally, and the strain and velocity response of the plate are measured by the strain gauges and the 3D-DIC measuring technique. The comparison between the numerical results and the experimental results proves the accuracy of the formulation proposed in this paper. Meanwhile, the influence of the relative velocity on the friction coefficient is investigated.
陈 鹏, 刘锦阳,洪嘉振. 考虑摩擦的柔性多体系统斜碰撞理论与实验研究[J]. 振动与冲击, 2018, 37(1): 1-7.
CHEN Peng LIU Jin-yang HONG Jia-zhen . Simulation and experimental investigation of eccentric collision in multi-body system involving friction. JOURNAL OF VIBRATION AND SHOCK, 2018, 37(1): 1-7.
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