Journal of Mechanical Science and Technology

The Korean Society of Mechanical Engineers (대한기계학회)
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Study on Damping Characteristics of Hydropneumatic Suspension Unit of Tracked Vehicle

  • Cho, Jin-Rae (School of Mechanical Engineering, Pusan National University) ;
  • Lee, Hong-Woo (School of Mechanical Engineering, Pusan National University) ;
  • Yoo, Wan-Suk (School of Mechanical Engineering, Pusan National University) ;
  • Lee, Jin-Kyu (Tong Myung Heavy Industries Co.)
  • Published : 2004.02.01
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Abstract

Hydropneumatic suspension unit is an important part of tracked vehicles to absorb external impact load exerted from the non-paved road and the cannon discharge. Its absorption performance is strongly influenced by both damping and spring forces of the unit. In this paper, we numerically analyze the damping characteristics of the in-arm-type hydropneumatic suspension unit (ISU) by considering four distinct dynamic modes of the ISU damper: jounce-loading, jounce-unloading, rebound-loading and rebound-unloading. The flow rate coefficients determining the oil flow rate through the damper orifice are decided with the help of independent experiments. The wheel reaction force, the flow rate at cracking and the damping energy are parametrically investigated with respect to the orifice diameter and the wheel motion frequency.

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References

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