Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
권호 표지
DOI QR코드

DOI QR Code

Dynamic Analysis of the Small Reciprocating Compressors Considering Viscous Frictional Force of a Piston

피스톤의 점성 마찰력을 고려한 소형 왕복동 압축기의 동적 해석

  • 김태종 (부산대학교 기계공학부 기계기술연구소)
  • Published : 2002.11.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this study, a dynamic analysis of the reciprocating compression mechanism considering viscous friction force of a piston used in small refrigeration compressors is performed. The length of cylinder in this class of compressors is shortening to diminish the frictional losses of the piston-cylinder system. So, the contacting length between piston and cylinder liner is in variable with the rotating crank angle around the BDC of the reciprocating piston. In the problem formulation of the compression mechanism dynamics, the change in bearing length of the piston and all corresponding viscous forces and moments are considered in order to determine the trajectories of piston and crankshaft. The piston orbits for viscous friction model and Coulomb friction model were used to compare the effect of the friction forces of piston on the dynamic trajectories of piston. To investigate the effect of friction force acting on the piston for the dynamic characteristics of crankshaft, comparison of the crankshaft loci is given in both viscous model and Coulomb model. Results show that the viscous friction force of piston must be considered in calculating for the accurate dynamic characteristics of the reciprocating compression mechanism.

Keywords

References

  1. 今市憲作. 石井德章. 鹿籠六信夫. 1975. "小形往復壓縮機の振動." 日本機械學會論文集. 第 41卷 348號. pp. 2333-2346.
  2. Dufour, R., Hagopian, J. D. and Lalanne, M., 1995, "Transient and Steady State Dynamic Behavior of Single Cylinder Compressors : Prediction and Experiments," Journal of Sound and Vibration, Vol. 181. No.1, pp. 23-41. https://doi.org/10.1006/jsvi.1995.0123
  3. Li. D. F., Rohde, S. M. and Ezzat, H. A., 1983, "An Automotive Piston Lubrication Model." ASLE Transactions, Vol. 26, No.2, pp. 151-160. https://doi.org/10.1080/05698198308981489
  4. Zhu, D., Cheng, H. S., Arai, T. and Hamai, K., 1992, "A Numerical Analysis for Piston Skirts in Mixed Lubrication Part 1: Basic Modeling, Journal of Tribology,' Vol.114, pp. 553-562. https://doi.org/10.1115/1.2920917
  5. Zhu, D., Hu, Y. Z., Cheng, H. S., Arai, T., and Hamai, K., 1993, "A Numerical Analysis for Piston Skirts in Mixed Lubrication Part 2; Deformation Consideration," Journal of Tribology, Vol. 115, pp. 125-133. https://doi.org/10.1115/1.2920965
  6. Nakada, T., Yamamoto, A. and Abe, T., 1997, "A Numerical Approach for Piston Secondary Motion Analysis and its Application to the Piston Related Noise," SAE paper No. 972043.
  7. 조성호. 안상태. 김양한. 2000. "피스톤 슬랩 충격력 예측을 위한 충돌점 모델." 한국소음진동공학회지(현 논문집). 제 10 권 제 3 호. pp. 474-479.
  8. Prata, A. T., Fernando Julio, R. S. and Fagotti, F., 2000, "Dynamic Analysis of Piston Secondary Motion for Small Reciprocating Comessors," Trans ASME, Journal of Tribology, Vol. 122, pp. 752-760. https://doi.org/10.1115/1.1314603
  9. Kirk, R. G. and Gunter E. J., 1975, "Short Bearing Analysis Applied to Rotor Dynamics, Part 1 : Theory," Journal of Lubrication Technology, April, pp. 319-329.
  10. Lund, J. W., 1987, "Review of the Concept of Dynamic Coefficients for Fluid Film Journal Bearings," ASME Journal of Tribology, Vol. 109, pp. 37-41. https://doi.org/10.1115/1.3261324
  11. 김태종. 2002. "왕복동형 압축기 피스톤의 동적 거동 해석." 한국소음진동공학회논문집. 제12권 제9호. pp. 717-724 https://doi.org/10.5050/KSNVN.2002.12.9.717
  12. 김태종. 2001. "가변속 왕복동형 압축기 크랭크축-베어링계의 동적 거동 해석." 한국윤활학회지. 제17권 제6호. pp. 426-434.