STUDY ON LINEARIED MODEL FOR DYNAMIC STIFFNESS OF AIR SPRING WITH AUXILIARY CHAMBER
Wang Jiasheng,Zhu Sihong
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College of Engineering， Nanjing Agricultural University，Nanjing, 210031, Jiangsu, China
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History+
Received
Revised
Published
2008-03-17
2008-06-05
2009-02-25
Issue Date
2009-02-25
Abstract
Based on the theory of thermomechanics and fluid dynamics, the state equations and dynamic equations of air spring, auxiliary chamber and orifice are established. In order to simplify the complex nonlinear model, supposing the amplitude of vibration is small, the dynamic equations are linear processed with small deviation linear method which based on Taylor series, then the linearied model for dynamic stiffness of air spring is deduced. In order to verify the precision of linearied model and analyze the effect of each parameter on dynamic stiffness of air spring, taking the Firestone 1T15M-2 air spring as example, the dynamics stiffness of air spring with varying parameters was calculated with the dynamic stiffness nonlinear model and the dynamic stiffness linearied model respectively. The results show that air spring pressure, area of orifice, frequency of vibration, volume of auxiliary chamber all affect dynamic stiffness of air spring. Under the affection of each factor, the change curves of linearied model and that of nonlinear model are closed on the whole.
Wang Jiasheng;Zhu Sihong.
STUDY ON LINEARIED MODEL FOR DYNAMIC STIFFNESS OF AIR SPRING WITH AUXILIARY CHAMBER[J]. Journal of Vibration and Shock, 2009, 28(2): 72-76
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