Analysis of deformation of wheel-axle structure and contact stress of axle-sliding bearing of variable gauge bogie with a speed of 400 km/h
For the deformation of the wheel-axle structure and the contact of the axle-sliding bearing of variable gauge bogie for1 435 mm/1 520 mm with a speed of 400 km/h, the vertical load values of axle journals were calculated in accordance with the standard EN 13104; based on Hertz contact theory, the se...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Editorial Department of Electric Drive for Locomotives
2022-07-01
|
| Series: | 机车电传动 |
| Subjects: | |
| Online Access: | http://edl.csrzic.com/thesisDetails#10.13890/j.issn.1000-128X.2022.04.003 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | For the deformation of the wheel-axle structure and the contact of the axle-sliding bearing of variable gauge bogie for1 435 mm/1 520 mm with a speed of 400 km/h, the vertical load values of axle journals were calculated in accordance with the standard EN 13104; based on Hertz contact theory, the semi-axis lengths of wheel-rail contact elliptical spots were solved to determine the constraint area of the wheel; according to the characteristics of the wheel-axle structure, the contact relationship of axle-sliding bearing was analyzed. The finite element model of the wheel-axle structure was established to study the effects of the thickness of resin of sliding bearing, the fit clearance between the axle and sliding bearing and centrifugal force on the deformation of the wheel-axle structure, the contact pressure of axle-sliding bearing and the shear stress of resin layer. The results of the calculations show that compared with resin-free layer, the surface of the inner hole of the sliding bearing with resin, which can reduce the structural deformation and significantly decrease the contact pressure and edge effect of axle-sliding bearing. It has little effect on the deformation of the wheel-axle structure, the contact pressure of axle-sliding bearing, and shear stress of resin layer when the fit clearance between axle and sliding bearing within 0-0.3 mm. The speed of vehicle increases in the range of 0 to 400 km/h, which has little effect on the structural deformation, but the contact pressure of the axle-sliding bearing and the shear stress of the resin layer both show obvious nonlinear growth. |
|---|---|
| ISSN: | 1000-128X |