Analysis Dynamics of Brake System

摘要

Abnormity oscillation is caused sometimes in allusion to vehicle brake system, at the same time this abnormity oscillation is not understudied. This paper proposes simulating practical braking friction by a new friction model. In the interest of mechanism analysis, brake system is simplified. This paper analyzes 2 freedoms model, confirmed that there is instability point in the dynamical system and obtained instability forms. It discusses possibility oscillation and analyzes dynamics characteristic beyond periodic perturbation, obtained Hopf-Hopf bifurcation in T~2 torus. Because brake system may affect vehicle, considering it in vehicle dynamics system, this paper analyzes brake pad and bogie frame oscillation influenced by negative friction and stick-slip friction.