AbstractThe development and growth of plastic flow in the rail head is investigated on the IIT – GMEMD Wheel Rail Simulation Facility utilizing a 1/4.5 scale Hertzian simulation of several freight cars for both tangent and curved tracks. An approximate analytical basis of the laboratory simulation is discussed. It is observed that much of the plastic flow develops in the early stages, its magnitude depending on the tonnage of cars used. The plastic flow stabilizes at a small constant rate which is expected to continue until the shake down of the track is reached. The flow rate is higher for the higher tonnage cars. For tangent track, it is almost twice as high for the 90.7 ton cars as for the 63.5 ton cars. F or the curved track, the plastic flow is cumulatively in one direction and is expected to be between one and two orders of magnitude more than on tangent track. It was found that the flow of rail is influenced more by an increase in the angle of attack than by an increase in the tonnage of cars. This...
[1]
V. Radhakrishnan,et al.
Plastic deformation in rolling contact
,
1975
.
[2]
G. J. DeSalvo,et al.
On the Plastic Flow Beneath a Blunt Axisymmetric Indenter
,
1970
.
[3]
K. Johnson,et al.
An Analysis of Plastic Deformation in Rolling Contact
,
1963
.
[4]
G. M. Hamilton,et al.
Plastic Flow in Rollers Loaded above the Yield Point
,
1963
.
[5]
K. L. Johnson.
A review of the theory of rolling contact stresses
,
1966
.
[6]
G. J. DeSalvo,et al.
A New Approach to Plasticity and Its Application to Blunt Two Dimensional Indenters
,
1970
.