Application of coupled multi-body dynamics–discrete element method for optimization of particle damper for cable vibration attenuation

Abstract

With the application of the particle damping technology to cable vibration attenuation, the rootless cable damper overcomes the limit in installation height of existing dampers. Damping is achieved through energy dissipation by collisions and friction. In this paper, a coupled multi-body dynamics–discrete element method is proposed to simulate the damping of the damper–cable system under a harmonic excitation. The analyses are done by combining the discrete element method in EDEM and multi-body dynamics in ADAMS. The simulation results demonstrate the damping efficiency of rootless particle damper under different excitations and reveal the influence of the design parameters on its performance, including the filling ratio, particle size, coefficient of restitution, and coefficient of friction.

Keywords

granular material / vibration control / discrete element method / particle damper / cable vibration

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Acknowledgements

This study was supported by the National Natural Science Foundation of China (Grant No. 5187849); National Key R&D Program of China (2017YFF0205605); Shanghai Urban Construction Design Research Institute Project “Bridge Safe Operation Big Data Acquisition Technology and Structure Monitoring System Research”; and Ministry of Transport Construction Science and Technology Project “Medium–Small Span Bridge Structure Network Level Safety Monitoring and Evaluation.”

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