Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Life Prediction for High Pressure Hose of Power Steering System by Impulse Pressure Test

충격 압력을 받는 파워스티어링 시스템의 고압호스 수명 예측

  • Lee, Gi-Chun (Reliability Assessment Center, Korea Institute of Machinery & Materials) ;
  • Kim, Hyoung-Eui (Reliability Assessment Center, Korea Institute of Machinery & Materials) ;
  • Park, Jong-Won (Reliability Assessment Center, Korea Institute of Machinery & Materials) ;
  • Lee, Jong-Hwang (Durability & Reliability Team, Hyundai & Kia Corporate Research & Delopment Division) ;
  • Jeong, Won-Wook (Durability & Reliability Team, Hyundai & Kia Corporate Research & Delopment Division) ;
  • Im, Young-Han (Reliability Assessment Team, Hwaseung R&A Co., Ltd) ;
  • Hwang, Kwon-Tae (BK21 Mechatronics Groups, Dept. of Mechanical Design Engineering, Chungnam National University) ;
  • Lee, Young-Shin (BK21 Mechatronics Groups, Dept. of Mechanical Design Engineering, Chungnam National University) ;
  • Kim, Jae-Hoon (BK21 Mechatronics Groups, Dept. of Mechanical Design Engineering, Chungnam National University)
  • Published : 2010.01.01
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Abstract

The hydraulic hose can be divided with the low pressure, the medium pressure, and the high pressure hose according to the applied pressure. The power steering system in a passenger car can be divided with the high pressure and the low pressure hose. This study deals with the life prediction for high pressure hose to be given impulse pressure which was generated in turning the car. To adjust with external and internal condition, impulse pressure and oil temperature need to be controlled with impulse test system. The result, which is only controlled with the pressure and oil temperature, adapted Calibrated Accelerated Life Test(CALT) method to predict the life of the high pressure hose and analyzed the swagging part by finite element method during the impulse test.

유압호스는 적용되는 압력에 따라서 저압, 중압, 고압으로 구분되어진다. 승용차의 파워스티어링 시스템은 저압부와 고압부 시스템으로 구분되어질 수 있다. 본 연구의 목적은 차량이 회전할 때 발생되는 충격압력이 고압호스부에 적용될 때 수명을 예측하는 것이다. 내부와 외부 조건을 조절하기 위해서 충격 압력과 작동유의 온도는 충격압력 시스템에서 제어되는 것이 필요하다. 충격압력 시험에서 압력과 작동유 온도만을 조절하여 얻은 결과는 고압호스의 수명을 예측하기 위한 조절형 가속수명시험을 적용하였으며, 또한 유한요소법으로 스웨이징부를 해석하였다.

Keywords

References

  1. Evans, C. W., 1980, "Testing Requirements for Hydraulic Hose," Polymer Testing, Vol. 1, No. 1, pp. 39-49 https://doi.org/10.1016/0142-9418(80)90025-2
  2. Kim, B. T. and Kim, H. J., 2003, “A Study on the Deformation Characteristics of a High Pressure Hose with respect to the Swaging Strokes," KSOE, Vol. 17, No. 4, pp. 37-42.
  3. Roh, G. T., Jeon, D. H. and Cho, J. R., 2004, "Finite Element Analysis of Swaging Process for Power Steering Hose," KSME, Vol. 28, No. 6, pp. 747-754 https://doi.org/10.3795/KSME-A.2004.28.6.747
  4. Kang, B. S., Kim, H. E., Park, J. W., and Yoo, Y. C., 2008, "Development of Accelerated Life Test Method for Pneumatic Cylinder," Proceedings of the 51st National Conference on Fluid Power, Las Vegas, Nevada, USA.
  5. Lee, G. C., Park, J. W., Kim, H. E., Lee, J. H., Jeong, W. W. and Kim, J. H., 2008, “Life Prediction for High Pressure Hose of Power Steering System by Impulse Pressure Test," Proceeding of KSME 2008 Spring Meeting, pp. 44-46
  6. Evans, C. W. and Manley, T. R., 1986, "Factors Affecting the Impulse Testing of Hydraulic Hose," Polymer Testing, Vol. 6, No. 2, pp. 135-149 https://doi.org/10.1016/0142-9418(86)90012-7
  7. SAE standard, 2001, "Test and Test Procedures for SAE100R Series Hydraulic Hose and Hose Assemblies SAE J343," SAE Standard REV Jul 2001
  8. International Standard ISO, 1997, "Rubber and Plastics Hose Assemblies Flexing Combined Hydraulic Impulse Test Half-Omega Test," International Standard ISO

Cited by

  1. Hydraulic Impulse-Testing System with Pressure Difference Feedback from a Second-Stage Valve vol.28, pp.6, 2015, https://doi.org/10.1061/(ASCE)AS.1943-5525.0000492