Research Article
The Impact of Wheel Flat on Traction Drive System of Electric Locomotives
Table 2
Parameters of the vehicle system.
| Parameter | Value |
| Car body mass (kg) | 6.26 × 104 | Bogie mass (kg) | 7.84 × 103 | Wheelset mass (kg) | 2.77 × 103 | Motor mass (kg) | 2.66 × 103 | Mass moment of inertia of car body (kg · m2) | 1.434 × 106 | Mass moment of inertia of bogie frame (kg · m2) | 1.311 × 104 | Mass moment of inertia of wheelset (kg · m2) | 4.2 × 102 | Mass moment of inertia of motor (kg · m2) | 2 × 102 | Stiffness of primary suspension (N/m) | 3.14 × 106 | Stiffness of secondary suspension (N/m) | 2.14 × 106 | Stiffness of suspension connecting motor and bogie frame (N/m) | 1.0 × 1010 | Stiffness of axle-hung bearing supporting motor on wheel axle (N/m) | 1.0 × 1010 | Damping coefficient of primary suspension (N s/m) | 5 × 104 | Damping coefficient of suspension connecting motor and bogie frame (N s/m) | 9 × 104 | Damping coefficient of secondary suspension (N s/m) | 1.0 × 103 | Damping coefficient of axle-hung bearing supporting motor on wheel axle (N s/m) | 1.0 × 103 | Semi-longitudinal distance between bogies (m) | 5.03 | Semi-longitudinal distance between wheelsets in bogie (m) | 1.3 | The longitudinal distance between bogie center and hung position of motor on bogie (m) | 0.374 | Longitudinal distance between pinion center and hung position of motor on bogie (m) | 0.35 | Distance between centers of pinion and gear (m) | 0.576 | Wheel radius (m) | 0.625 |
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