WHEEL RAIL CONTACT FORCES FOR FLEXIBLE VERSUS SOLID WHEELS DUE TO TREAD IRREGULARITIES

被引:24
作者
FERMER, M
NIELSEN, JCO
机构
[1] Division of Solid Mechanics, Chalmers University of Technology
关键词
D O I
10.1080/00423119308969511
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
The vertical dynamic behaviour of a railway vehicle with flexible wheels is compared to that of a vehicle with standard solid wheels. Full-scale field experiments performed on a portion of a recently built railway track for high-speed trains are reported. Flexible and solid wheels without and with wheel flats were instrumented for measurement of transient vertical wheel/rail contact forces. Accelerations and strains in the track structure were measured in parallel. The location of the instrumented wheelset in relation to the instrumented portion of the track was determined at each instant of time. Flexible wheels are shown to considerably reduce the contact forces. A linear mathematical model of die track is suggested based on a previously reported technique for solving vertical interaction problems. Track parameters determined at the test-site are used as input to the model. Numerical results show acceptable agreement with measured responses.
引用
收藏
页码:142 / 157
页数:16
相关论文
共 18 条
[1]  
Fermer M., Flexible Wheels for Railway Freight Cars Considering Thermal and Mechanical Aspects of Block Braking, 10th International Wheelset Congress, pp. 277-281, (1992)
[2]  
Nielsen J.C.O., Abrahamsson T.J.S., Coupling of Physical and Modal Components for Analysis of Moving Nonlinear Dynamic Systems on General Beam Structures, Int J Numer Methods Eng, 33, 9, pp. 1843-1859, (1992)
[3]  
Grassie S.L., Gregory R.W., Harrison D., Johnson K.L., The Dynamic Response of Railway Track to High Frequency Vertical Excitation, J Mech Eng Sci, 24, 2, pp. 77-90, (1982)
[4]  
Grassie S.L., A Contribution to Dynamic Design of Railway Track, 12th IAVSD-Symposium, pp. 195-209, (1991)
[5]  
Grassie S.L., Cox S.J., The Dynamic Response of Railway Track with Flexible Sleepers to High Frequency Vertical Excitation, Proc Instn Mech Engrs, Part D, 198, 7, pp. 117-124, (1984)
[6]  
Grassie S.L., Cox S.J., The Dynamic Response of Railway Track with Unsupported Sleepers, Proc Instn Mech Engrs, Part D, 199, 2, pp. 123-135, (1985)
[7]  
Clark R.A., Dean P.A., Elkins J.A., Newton S.G., An Investigation into the Dynamic Effects of Railway Vehicles Running on Corrugated Rails, J Mech Eng Sci, 24, 2, pp. 65-76, (1982)
[8]  
Tunna I.M., Wheel/Rail Forces due to Wheel Irregularities, pp. 6-12, (1988)
[9]  
Cai Z., Raymond G.P., Theoretical Model for Dynamic Wheel/Rail and Track Interaction, 10th International Wheelset Congress, pp. 127-131, (1992)
[10]  
Sallstrom J.H., Fluid-Conveying Damped Rayleigh-Timoshenko Beams in Transverse Vibration Analyzed by use of an Exact Finite Element, Part II Applications, J Fluids Struct, 4, 6, pp. 573-582, (1990)