The study on the influence of contact pressure distribution on brake squeal analysis

브레이크 스퀼 해석에서 접촉압력분포의 영향에 관한 연구

  • 이호건 (인제대학교 기계공학과) ;
  • 손민혁 (인제대학교 수송기계부품 기술혁신센터(TIC)) ;
  • 서영욱 (인제대학교 수송기계부품 기술혁신센터(TIC)) ;
  • 부광석 (인제대학교 기계자동차공학부) ;
  • 김흥섭 (인제대학교 기계자동차공학부)
  • Published : 2007.11.15

Abstract

Recently in the automotive brake industry brake squeal noise has become one of the top automotive quality warranty issues. The contact pressure is used to predict friction coupling in the brake squeal analysis. The formulation of friction coupling has performed by nonlinear static analysis prior to the complex eigenvalue analysis. This paper proposes a validation methodology of squeal analysis using modal testing and contact analysis and examines the effect of predicted contact pressure that leads to the discrepancy between unstable complex mode and squeal frequency. This studies compose a three step validation process : examining the modal characteristics of component and assembly loaded contact pressure using modal testing and FEM analysis and verifying the contact pressure distribution using nonlinear static analysis and experiment. Finally, the unstable modes from complex eigenvalue analysis and realistic squeal frequency from the noise dynamometer are investigated.

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