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A Study on the Durability Design of a Hydraulic Cylinder for an Excavator

굴삭기 유압실린더의 내구설계 기법에 관한 연구

  • Kim, Young-Bum (Mechanical Design Research Deparment, Hyundai Heavy Industries) ;
  • Kim, Pan-Young (Mechanical Design Research Deparment, Hyundai Heavy Industries) ;
  • Kim, In-Kyu (Construction Equipment Advanced Technical Department, Hyundai Heavy Industries) ;
  • Kwon, Hak-Soon (Construction Equipment Advanced Technical Department, Hyundai Heavy Industries) ;
  • Lee, Min-Hee (Construction Equipment Advanced Technical Department, Hyundai Heavy Industries) ;
  • Park, Jin-Soo (Mechanical Design Research Deparment, Hyundai Heavy Industries)
  • 김영범 (현대중공업 기계설계연구실) ;
  • 김판영 (현대중공업 기계설계연구실) ;
  • 김인규 (현대중공업 건설장비 선행개발부) ;
  • 권학순 (현대중공업 건설장비 선행개발부) ;
  • 이민희 (현대중공업 건설장비 선행개발부) ;
  • 박진수 (현대중공업 기계설계연구실)
  • Received : 2010.05.14
  • Accepted : 2010.09.17
  • Published : 2010.12.01

Abstract

A hydraulic cylinder is a primary component of an excavator and is used for activating attachments such as boom, arm, and bucket. Generally, the cylinder is prone to structural problems such as buckling and fatigue failure caused by cyclic high pressure. Therefore, the safety margin for fatigue, yield, and buckling during the design lifetime should be evaluated at the durability-design stage. The durability design includes basic and detailed stages. In the basic design, the principal dimensions of the rod and tube are determined by considering the working force, speed, and range with respect to yield and buckling. In the detailed design, the dimensions of the rod notch, welds, tube end, gland, orifice, and cushion ring are determined by considering the fatigue safety. We present and discuss the overall procedure for durability design and the related analysis techniques.

Keywords

Hydraulic Cylinder;Excavator;Durability Design;Buckling;Fatigue;Yield;Basic Design;Detailed Design

References

  1. ISO Technical Committee 127, 1993, ISO 10567: Earth-Moving Machinery-Hydraulic Excavators-Lift Capacity, International Organization for Standardization, Switzerland, pp. 1-10.
  2. ISO Technical Committee 127, 2006, ISO 6015: Earth-Moving Machinery-Hydraulic Excavators and Backhoe Loaders-Methods of Determining Tool Forces, International Organization for Standardization, Switzerland, pp. 12-16.
  3. Ugural, A. C., 2003, Mechanical Design: An Integrated Approach, McGraw-Hill, New York, pp. 661-666.
  4. Stephens, R. I., Fatemi, A., Stephens, R. R. and Fuchs, H. O., 2001, Metal Fatigue in Engineering, John Wiley & Sons, Inc., Canada, pp. 196-206.
  5. Bannantine, J. A., Comer, J. J. and Handrock, J. L., 1997, Fundamentals of Metal Fatigue Analysis, Prentice Hall, New Jersey, pp. 137-148.
  6. Hobbacher, A., 2005, Recommendations for Fatigue Design of Welded Joints and Components, International Institute of Welding, Paris, pp. 21-79.
  7. Fricke, H., 2006, Round-Robin Study on Stress Analysis for the Effective Notch Stress Approach, International Institute of Welding, Paris, pp. 1-17.

Cited by

  1. NDE Inspections and Simulation of Defects in Composite-Sintered Bushes vol.650, pp.1662-8985, 2013, https://doi.org/10.4028/www.scientific.net/AMR.650.582