Railhead corrugation resulting from mode-coupling instability in the presence of veering modes

被引：29

作者：

Fourie, Danie ^{[1
]}

Froehling, Robert ^{[1
]}

Heyns, Stephan ^{[2
]}

机构：

[1] Transnet Freight Rail, Pretoria, South Africa

[2] Univ Pretoria, Dept Mech & Aeronaut Engn, Pretoria, South Africa

来源：

TRIBOLOGY INTERNATIONAL | 2020年 / 152卷 / 152期

关键词：

Corrugation; Mode-coupling instability; Self-excited frictional vibration; Mode veering; Gear mesh stiffness; Locomotive traction; CURVE SQUEAL; FORMATION MECHANISM; DYNAMICS;

D O I：

10.1016/j.triboint.2020.106499

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Severe short pitch railhead corrugation with a wavelength of approximately 70 mm has been observed on the inner rail of small radius curves on a general freight route in South Africa. Complex eigenvalue analysis of a reduced six mode modal model showed how coupling of the second coupled mode of traction motor pitching and wheelset torsion with the first asymmetric wheelset bending mode becomes unstable at the corrugation frequency in the presence of large lateral creepage. This occurs for a certain range of gear mesh stiffness when traction is transmitted across the wheelset traction motor gear pair.

引用

页数：12

共 25 条

[1]

Brickle BJ, 1998, RAIL CORRUGATION MIT, V26

[2] Field measurement and model prediction of rail corrugation [J].