Dynamic transient analysis of squealing vibration of a reciprocating sliding system

Abstract

A dynamic transient model of a reciprocating sliding system is established and a numerical study of friction-induced vibrations of the model is performed. Firstly, the propensity of friction-induced vibrations and noise during a reciprocating sliding is predicted using the finite element complex eigenvalue method. Secondly, a dynamic transient analysis of the model is carried out using the ABAQUS software. The result predicted by the complex eigenvalue analysis is compared with the experimental test result. It is found that these two results have a good agreement in frequency. A comparison between the dynamic transient analysis results and the experimental results is carried out, and it is found that the agreement between the simulation results and the experimental results is generally good (in time and frequency domains). The dynamic transient analysis results demonstrate that when squeal occurred, the normal accelerations and the tangential accelerations have the same vibration frequency. This phenomenon indicates that the coupling of normal and tangential vibration is a main cause resulting in squeal occurrence. Moreover, parameter sensitivity analysis shows that the normal load, the frequency and the displacement of reciprocating sliding have important influences on the friction-induced vibrations of the metal reciprocating sliding system.