DOI QR코드

DOI QR Code

A Study on Squeal Noise Robustness Analysis to Improve Composite Brake Stability of High Performance and Eco-Friendly Vehicles

고성능 및 친환경 차량의 복합재 브레이크 안정감 향상을 위한 스퀼 노이즈 강건성 분석에 관한 연구

  • Received : 2021.01.15
  • Accepted : 2021.08.13
  • Published : 2021.09.30

Abstract

Composite material is very attractive because it has excellent mechanical property and is possible to lightweight due to the low density. However, composite material is less used compared to other systems in the chassis system because it is very hard to solve NVH problem when composite material is applied to vehicle. Especially, reducing squeal noise of composite brake system is essential to apply it to vehicle successfully. In this paper, we present a new solution to reduce squeal noise of composite brake system. To achieve this goal, we analyze main causes of noise using RCA (Root Cause Analysis), CA (Contradiction Analysis) and sequentially get IFR (Ideal Final Result) to solve the problem. Next, we define the function of composite brake system and derive control factors and noise factors. A variety of tests for factors like chamfer, slot, damping shim, underlayer of brake pad are done. In addition, we analyze level of contribution for control factors theoretically. Finally, we get the effective solution for reducing squeal noise.

Keywords

References

  1. J. T. Park, N. S. Choi, 2012, "Robust Design of the Disc Brake Pad Shape for Reduction of Uneven Wear", Transaction of KSAE, Vol. 20, No. 1, pp.77~87.
  2. J. T. Park, S. W. Han, N. S. Choi, 2014, "Robust Design of the Back-Plate Shape of the Disc Brake Pad for Reduction of Uneven Wear", Transaction of KSAE, Vol. 22, No. 1, pp. 8~19.
  3. J. H. Shim, D. W. Lim, 2016, "A Study on Coupling Structure of Carbon Ceramic Composite using Substance-Field Model Analysis and Friction.Wear Characteristics Control", Spring Conference Proceedings, pp. 380~388, KSAE.
  4. J. H. Shim, D. W. Lim, 2016, "A Study on Braking Characteristics Control of Carbon Ceramic Composite for Brake Reliability Improvement of Luxury Car and Future Technology Evolution Trend Prediction", Transaction of KSAE, Vol. 24, No. 6, pp. 684~693. https://doi.org/10.7467/KSAE.2016.24.6.684
  5. J. H. Shim, D. W. Lim, E. J. Hyun, 2018, "A Study on Development of Brake System and Performance Improvement using Carbon Ceramic Composite", Spring Conference Proceedings, pp. 318~325, KSAE.
  6. J. H. Shim, D. W. Lim, 2018, "A Study on Improvement of Fade Characteristic of Composite Brake through Optimization of Flow Performance", Autumn Conference Proceedings, pp. 143~148, KASA.
  7. J. H. Shim, D. W. Lim, 2019, "A Study on Improvement of Cooling Performance through Vent Structure Optimization of Carbon Ceramic Composite Disc", Journal of Auto-Vehicle Safety Association, Vol. 11, No. 1, pp. 23~29. https://doi.org/10.22680/KASA2019.11.1.023
  8. J. H. Shim, D. W. Lim, 2019, "A Study on Verification of Actual Car Effectiveness for Composite Brake", Transaction of KSAE, Vol. 27, No. 4, pp. 259~266. https://doi.org/10.7467/KSAE.2019.27.4.259
  9. J. H. Shim, D. W. Lim, 2019, "A Study on Analysis of Differentiation Technology and Development for Brake System of Luxury Cars", Autumn Conference Proceedings, pp. 32~37, KASA.
  10. J. H. Shim, D. W. Lim, E. J. Hyun, 2019, "A Study on Development of Ideal Final Result to Reduce NVH Deterioration Characteristics of Composite Brake System", Autumn Conference Proceedings, pp. 348~353, KSAE.
  11. J. H. Shim, D. W. Lim, E. J. Hyun, 2020, "A Study on Squeal Noise Reduction to Improve Braking Stability of Composite Brake Vehicles", Autumn Conference Proceedings, pp. 144~149, KASA.