Stochastic Analysis on the Resonance of Railway Trains Moving over a Series of Simply Supported Bridges

Table 2

Coefficients of variation of the random system parameters.

Parameters	COVs	Parameters	COVs
Mass of car body mc	0.25	Stiffness of the rail pad kp	0.35
Mass moment of inertia of car body Jc	0.25	Damping of the rail pad cp	0.35
Stiffness of the primary suspension k1z	0.25	Mass of the bridge per unit length mb	0.05
Stiffness of the secondary suspension k2z	0.25	Elastic modulus of the bridge Eb	0.25
Damping of the primary suspension c1z	0.25	Damping ratio of the bridge ζ	0.25
Damping of the secondary suspension c2z	0.25