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Table 2 Bearing system model parameters

From: Establishment of Dynamic Model for Axle Box Bearing of High-Speed Trains Under Variable Speed Conditions

Parameter

Value

Equivalent mass at shaft center mc (kg)

274

Bending damping of shaft C (N∙s/m)

2×106

Bending stiffness of shaft K (N/m)

1.48×107

Mass eccentricity of shaft section e (mm)

10-5

Inner ring damping coefficient C1 (N∙s/m)

7000

Inner ring stiffness coefficient K1 (N/m)

3.05×108

Outer ring damping coefficient C2 (N∙s/m)

7000

Outer ring stiffness coefficient K2 (N/m)

1.45×1010

Contact stiffness coefficient Kt (N/m)

1.55×1010