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Optimal Design of Ventilated Disc Brake Rotor

벤틸레이티드 디스크 브레이크 로터의 최적설계

  • Published : 2000.03.01

Abstract

The shape optimization is performed to minimize the judder of ventilated disc brake rotor that is induced by the thermal deformation of the disc. A three-dimensional finite element is developed to analyze the coupled system of temperature and displacement field, and the thermal conductivity and mechanical stiffness matrices are simultaneously taken into account. To reduce computing time, an equivalent heat transfer rate is introduced approximating the heat transfer rate on the disc surface. A deformation factor is introduced to describe the thermal deformation causing the judder. The deformation factor is chosen as an objective function in the optimization process. Consequently an optimum design is then performed minimizing the deformation factor with the design variables of the shape of the disc. The optimum design procedure presented in this study is proven to be an effective method of minimizing the judder, and it reduces the thermal deformation by 23% of the initial geometry.

Keywords

Brake Rotor;Disc Brake;Thermal Judder;Coupled Field Problem;Partitioning Technique;Finite Element Method;Thermal Load

References

  1. 공영학, 1998, '열 및 응력 해석용 3차원 적층 유한요소의 개발,' 석사학위 논문. 한양대학교. 서울
  2. Vanderplaats Research & Development, 1995, DOT-Design Optimization Tools, VR&D, Inc.
  3. Liies C. D., 1989, 'Analysis of Disc Brake Squeal Using Finite Element Methods,' SAE Technical Paper, No. 891150
  4. Limpert R., 1975, 'Cooling Analysis of Disk Brake Rotors,' SAE Technical Paper, No. 751014
  5. 홍기원, 김재수, 김중재, 김헌영, 1993, 'Disk Brake System 열변형 및 Caliper 강성해석,' 한국자동차공학회 논문 5-1, No.933841
  6. Dow T. A., 1980, 'Thermoelastic Effects in Brakes,' Wear, Vol. 59, pp.213-221 https://doi.org/10.1016/0043-1648(80)90279-3
  7. Milner N., 1978, 'An analysis of Disk Brake Squeal,' SAE Technical Paper, No. 780332
  8. Rhee S. K., 1991, 'The Role of the Friction Film in Friction, wear and noise of Automotive Brakes,' Wear, Vol. 146
  9. Crolla D. A. and Lang A. M., 1991, 'Brake Noise and Vibration - the stste of the Art,' J. Mech. E
  10. Rudolf Limpert, 1992, Brake Design and Safety, SAE, Warrendale, pp.89-90
  11. Yoshio Jimbo, Takahiro Mibe and Kouichi Akiyama, 'Development of high Thermal Conductivity Cast Iron for Brake Disk Rotors,' SAE Technical Paper, No. 90002
  12. Moriaki Gouya and Massaki Nishiwaki, 'Study on Disk Brake Groan,' SAE Technical Paper, No. 90007
  13. Alexander de vries, 1992, 'The Brake Judder Phenomenon,' SAE Technical Paper, No. 920554
  14. Burton R. A., 1980, 'Thermal Deformation in Frictionally Heated contact,' Wear, Vol. 29, pp.1-20