Calculation and Simulation of Leakage of Stepseals in Main Piston of Hydro-pneumatic Springs

doi:10.3969/j.issn.1000-1093.2017.07.002

Abstract

Abstract: To study the working stability of Stepseals in main piston of hydro-pneumatic springs in a wide range of temperature, a fluid dynamic seal model is established based on mechanics of materials and hydrodynamics. The theoretical formula of Stepseals leakage is deduced. The effects of temperature, piston velocity, pre-compression ratio and groove dimensions on leakage are analyzed using film pressure data from finite element models. Results show that the increase in piston velocity, the decrease in pre-compression ratio and the increase in groove dimensions lead to more leakage of Stepseals, and higher temperature also causes more leakage in allowable temperature range. Key

Key words: ordnancescienceandtechnology, Stepseal, leakage, hydro-pneumaticspring

CLC Number:

TB42

GUI Peng， MAO Ming， CHEN Yi-jie， GUO Jian-juan， GAO Xiao-dong， NING Dan. Calculation and Simulation of Leakage of Stepseals in Main Piston of Hydro-pneumatic Springs[J]. Acta Armamentarii, 2017, 38(7): 1255-1262.

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第38卷
第7期2017 年7月兵工学报ACTA
ARMAMENTARIIVol.38No.7Jul.2017

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