Design Automization for Torque Converter Damper Spring Using Optimization

최적화를 통한 토크 컨버터 댐퍼 스프링 설계 자동화에 관한 연구

  • Published : 2007.06.30

Abstract

A torque converter, connected to a transmission/transaxle input shaft, connects, multiplies and interrupts the flow of engine torque into the transmission. Damper springs are usually equipped in a torque converter to convert stably the torque power supplied from engine. Damper Springs generally have the most flexible design variables among vehicle transmission parts, so that they could be effective design factors to improve the entire vehicle's performance. Damper spring, however, has geometric complexity after it equipped in a torque converter. For that reason, modeling a damper spring requires expert's knowledge to determine many design parameters and satisfy the functional requirements at the same time. In this paper, we introduce an optimum design method applied in detailed-design stage to reduce design process and financial loss caused by adequate design. Many design variables have to be classified and structuralized for Optimization. This also could make designer concentrate on functional requirements of damper spring, not on design possibility. In addition, modeling an assembled spring has technical restriction with primitives of the current major CAD solutions because of complexity of assembled spring shape. Thus, one of modeling solution presented in this paper since detailed and exact modeling is important for CAE or DMU.

Keywords

References

  1. 자동 변속기의 설계 이론(Design Theory of Automatic Tranmission), 현대 자동차 중앙 연구소, 1995
  2. 구본철, 김동일, 장재덕, 주인식, '5속 자동변속기용 토크컨버터 록업클러치의 비틀림 진동 해석에 관한 연구', 한국자동차 공학회 춘계학술대회논문집, pp.602-607, 2003
  3. Jasbir S. Arora, 'Introduction to Optimum Design. 2nd ed.', Elsevier, 2004
  4. 권기억 외 3명, '록업 댐퍼 스프링 설계를 위한 차량 구동예의 비틀림 진동 해석', 한국자동차공학회지, 2001
  5. 안국현, '동력 전달계 비틀림 진동 해석을 위한 클러치 댐퍼 해석 모델 개발', 석사 학위 논문, 서울대학교, 2001
  6. Wahl, A. M., 'Diarnetral Expansion of Impacted Helical Compression Springs During Deflection', J. of Applied Mechanics, December, p. 565, 1953
  7. Kwon, H. H. and Choi, S. J., 'Design Automation of the Compressive Coil Spring', J. of the Korean Society of Machine Tool Engineers, Vol. 9. December 2000
  8. Hibbeler, R. C, 'Mechanics of Materials, 3'd ed.', Prentice Hall Press, 1997
  9. Garret N. Vanderplaats, 'Numerical Optimization Techniques for Engineering Design with Applications, 3'd ed.', Vanderplaats Research and Development, Inc, 1999
  10. Gerald Ferin, 'Curves and Surfaces for Computer Aided Geometric Design 3rd edition', Academic Press, pp. 189-199, 1992
  11. Microsoft Corporation 'MSDN for Visual Studio', 1987-2002
  12. Parametric Technology Corporation 'Pro/Toolkit User's Guide', Parametric Technology Corporation, 2001