A MATHEMATICAL MODEL TO PREDICT THE DYNAMIC VERTICAL WHEEL/RAIL FORCES ASSOCIATED WITH LOW RAIL JOINTS
The magnitudes of transient vertical wheel/rail forces, known as the P sub 1 and P sub 2 forces, respectively, resulting from a vehicle's passage over isolated low rail joints are very large in comparison with static wheel/rail loads. In this study, a mathematical model was developed to predict the vertical wheel/rail forces and the forces between a locomotive's suspended traction motor and associated truck frame. A parametric study to investigate the influences of various input and system parameters on these forces was conducted using the model. It was also shown that a simplified first order model is sufficiently accurate to predict vertical wheel/rail forces.
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Corporate Authors:
Association of American Railroads Research Center
3140 South Federal Street
Chicago, IL United States 60616 -
Authors:
- ARSLAN, A V
- Novoseletsky, L
- Publication Date: 1980-12
Media Info
- Features: Figures; References; Tables;
- Pagination: 78 p.
Subject/Index Terms
- TRT Terms: Car wheels (Railroads); Dynamics; Force; Joints; Mathematical models; Motors; Rail joints; Railroad cars; Railroad rails; Traction; Traction drives; Transients; Trucks; Wheels; Wheelsets (Railroads)
- Uncontrolled Terms: Vertical dynamics
- Old TRIS Terms: Low joints; Nose suspended; Truck dynamics
- Subject Areas: Motor Carriers; Railroads; Vehicles and Equipment;
Filing Info
- Accession Number: 00331131
- Record Type: Publication
- Report/Paper Numbers: AAR R-462
- Files: TRIS
- Created Date: Jul 9 1981 12:00AM