The Thermal Analysis of Brake Disc using the Solid Model and 2D Coupled Model

솔리드모델과 2D 연성모델을 사용한 브레이크 디스크의 열해석

  • 강상욱 (인제대학교 기계공학과) ;
  • 김창진 (인제대학교 기계공학과) ;
  • 이대희 (인제대학교 기계자동차공학부) ;
  • 김흥섭 (인제대학교 기계자동차공학부)
  • Published : 2003.11.01

Abstract

This paper describes the thermoelastic instability arising from friction heat generation in braking and proposes the finite element methods to predict the variation of temperature and thermal deformation. In a conventional disc brake analysis, heat generation is only related with wheel speed and friction material and the interface pressure between disc and pad is assumed constant. But under dynamic braking conditions, the frictional heat causes the thermoelastic distortion that leads to more concentrated contact pressure distribution and hence more and more non-uniform temperature. In this paper, to complete the solution of the thermomechanically coupled problem, the linear relation model between pressure and temperature is proposed and demonstrated in examples of a simple two dimensional contact problem. And the two dimensional model has been extended to an annular three dimensional disc model in order to consider more realistic geometry and to provide a more accurate critical speed for automotive brake systems.

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References

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