[KSCI] Korea Science Citation Index Service

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.)

Publication Information

Journal of Mechanical Science and Technology / v.18, no.2, 2004 , pp. 262-271 More about this Journal

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.

Keywords

ISU; Damping Characteristics; Damper Dynamic Mode; Damper Orifice; Flow Rate Coefficients; Flow Rate at Cracking; Damping Energy;

Citations & Related Records

Reference

1	Gerhart, P. M., Gross, R. J. and Hochstein, J. I., 1992, Fundamentals of Fluid Mechanics, Addison-Wesley Publication Company
2	Black, W. Z. and Hartley, J. G., 1996, Thermodynamics, Harper Collins, New York
3	Lee, H. W., Cho, J. R., Lee, J. K. and Lee, K. Y., 2003, 'Study on Dynamic Design of Reciprocating Hydropneumatic Suspension Unit,' Proc. KSME 2003 Spring Annual Meeting (Pusan Branch), pp. 83-88
4	Kim, H. O., Lee, H. W., Cho, J. R., Lee, J. K. and Chang, M. S., 2002, 'Study on the Kinematic Design of the Hydropneumatic Suspension Unit,' Proc. KSME 2002 Fall Annual Meeting (Pusan Branch), pp. 87-92
5	Wahl, A. M., 1963, Mechanical Springs, McGraw-Hill
6	Lee, H. W., Kim, H. O., Cho, J. R., Lee, J. K. and Chang, M. S., 2002, 'Characteristic Analysis of Spring and Damping of the Hydropneumatic Suspension Unit,' Proc. KSME 2002 Fall Annual Meeting (Pusan Branch), pp. 93-98
7	Press, W. H., Teukolsky, S. A., Vetterling, W. T. and Flannery, B. P., 1992, Numerical Recipes in Fortran : The Art of Scientific Computing, Cambridge University Press
8	Tong Myung Heavy Industries Co., Ltd., R&D Center, 1996, Technical Report : Analysis of Dynamic Behavior and Heat Transfer of HSU
9	Tong Myung Heavy Industries Co., Ltd., R&D Center, 2000, Technical Report : The Design of ERSU
10	Tong Myung Heavy Industries Co., Ltd., R&D Center, 2002, Technical Report : The Design and Computational Analysis of HSU Back-Up Model of NIFV ISU