Mathematical Modelling and Computational Simulation of the Hydraulic Damper during the Orifice-Working Stage for Railway Vehicles

Table 1

Main simulation parameters of the proposed model.

Parameters	Values	Parameters	Values
Diameter of orifice1	0.5 mm	Length of orifice1	1.75 mm
Diameter of orifice2	0.5 mm	Length of orifice2	1.75 mm
Diameter of orifice3	0.4, 0.5, 0.6 mm	Length of orifice3	0.75 mm
Diameter of pressure tube	60 mm	Diameter of piston	59.98 mm
Diameter of rod	30 mm	Width of piston	35 mm
Xg0	0.1 %	Psat	75 bar
Pvap	−0.6 bar		854 kg/m^3
	1.2 kg/m^3		15281 bar
T	25°C		1.4
T1	−20°C		1430 cSt
T2	100°C		6.1 cSt
	0.02 cP	k	4
Lreb0	168 mm	Lcom0	169 mm
Lc0	372 mm	Vk	110 ml