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SIMULATION OF TRACK FORCES AND RUNNING CHARACTERISTICS OF RAIL VEHICLES

Evert Andersson

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Abstract

ASEA's railway division has developed a computer program for simulating the interactions of the rail vehicle and the track. This program makes it possible to compute the forces between the vehicle and the track as well as the lateral movements and accelerations of the vehicle while running on a track with position irregularities both on level tangent sections and through curves. The program for a four-axle vehicle with two bogies covers 37 degrees of freedom and accounts for the nonlinearities in the wheel flange contact, in adhesion and in certain elastic and damping components. The computed results are compared with the test results of a Type X15 experimental train with two types of bogies as obtained at speed up to 220 km/h. If the input data are correct, the accuracy in computation is estimated at about plus or minus 10%.

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What this paper is about

ASEA's railway division has developed a computer program for simulating the interactions of the rail vehicle and the track. This program makes it possible to compute the forces between the vehicle and the track as well as the lateral movements and accelerations of the vehicle while running on a track with position irregularities both on level tangent sections and through curves. The program for a four-axle vehicle with two bogies covers 37 degrees of freedom and accounts for the nonlinearities in the wheel flange contact, in adhesion and in certain elastic and damping components. The computed results are compared with the test results of a Type X15 experimental train with two types of bogies as obtained at speed up to 220 km/h. If the input data are correct, the accuracy in computation is estimated at about plus or minus 10%.

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Available abstract

ASEA's railway division has developed a computer program for simulating the interactions of the rail vehicle and the track. This program makes it possible to compute the forces between the vehicle and the track as well as the lateral movements and accelerations of the vehicle while running on a track with position irregularities both on level tangent sections and through curves. The program for a four-axle vehicle with two bogies covers 37 degrees of freedom and accounts for the nonlinearities in the wheel flange contact, in adhesion and in certain elastic and damping components. The computed results are compared with the test results of a Type X15 experimental train with two types of bogies as obtained at speed up to 220 km/h. If the input data are correct, the accuracy in computation is estimated at about plus or minus 10%.

Key concepts: Bogie, Track (disk drive), Flange, Tangent, Computation, Axle, Position (finance), Structural engineering

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SIMULATION OF TRACK FORCES AND RUNNING CHARACTERISTICS OF RAIL VEHICLES — Research Paper | ScholarLens