A simplified nonlinear model in time domain and a linear model of hydro-pneumatic suspension in frequency domain were established and the expression of static stiffness and dynamic stiffness of hydro-pneumatic suspension were derived out. The expression of dynamic stiffness contains the static stiffness. Equivalent static stiffness rises with tire stiffness increasing, with the pressure of non-rod cavity of suspension cylinder increasing and with the initial position of suspension cylinder decreasing. Dynamic stiffness related to frequency increases dramatically as the frequency increases. The concept of the dynamic stiffness was proposed. The vibration characteristics of hydro-pneumatic suspension in the view of frequency domain can be analyzed and it is the reference to analyze the stiffness characteristics for suspension.
Static and Dynamic Stiffness Characteristics Analysis of Hydro-Pneumatic Suspension
2012
7 Seiten
Aufsatz (Konferenz)
Englisch
Tyre Load Analysis of Hydro-Pneumatic Interconnected Suspension with Zero Warp Suspension Stiffness
SAE Technical Papers | 2015
|Hydro-pneumatic suspension module, hydro-pneumatic suspension system and vehicle
Europäisches Patentamt | 2020
|Hydro-pneumatic suspension control valve and hydro-pneumatic suspension hydraulic control system
Europäisches Patentamt | 2022
|Citroen hydro-pneumatic suspension
Engineering Index Backfile | 1955