Transient simulation of friction-induced vibrations using an elastic multibody approach
In this paper, by the use of elastic multibody dynamics and a master–slave contact approach with penalty formulation, computationally efficient time integrations of a brake system are performed for constant and time-dependent input parameters. As a result, the amplitudes of the friction-induced vibrations and the contact forces at the disc–pad interfaces are predicted. Besides, system outputs are viewed in phase diagrams, and the creation of a stable limit cycle for a low friction coefficient is identified. In this way, conclusions on the stability of the system are drawn, and statements based on frequency-domain analyses are complemented. Finally, a distinct need for a new criterion that quantifies the squeal propensity of such systems in the time domain is identified.
KeywordsElastic multibody system Self-excited vibration Friction-induced vibration Brake squeal Penalty formulation
The authors would like to thank the organizers of the ECCOMAS Thematic Conference on Multibody Dynamics 2015 in Barcelona for the kind invitation to submit a reviewed and extended version of the proceedings contribution to this thematic issue.
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