SIMULATION MODELLING OF THE RAILWAY VEHICLE GUIDANCE MECHANISM

Priya Parthasarathy

Supervisors-

Dr.Christopher Ward

Dr.Roger Dixon

UKACC PhD Presentation Showcase

Background

Low adhesion

Reduced traction,

Extended braking distance, etc.

This project focusses on real time estimation of low adhesion at the wheel rail interface

Early stage of the project was to develop simulation model of a simplified rail vehicle to study the dynamics of railway vehicle systems

UKACC PhD Presentation Showcase Slide 2

Introduction and Initial Project Aim

Simulation model

The suspension force and the yaw moments are

UKACC PhD Presentation Showcase

Ym

y

fΨ kΨ

fy

ky

10mm 10mm

Suspendedmass

Wheelset

Track

Fig 1 Simplified rail vehicle model with single wheelset and suspended mass

Estimator model

Slide 3

UKACC PhD Presentation Showcase

Fig 2 Lateral position of the wheelset for the track displacement (Simulation model)

Fig 3 Lateral position of the wheelset for the track displacement (Simplified model)

Slide 4

Results

Fig 4 Yaw angle of the wheelset for the Simulation model

Fig 5 Yaw angle of the wheelset for the Simplified model

Future Work

UKACC PhD Presentation Showcase

1.Increasing complexity in the vehicle suspension system

2.Non-linear wheel rail contact profile

Condition Monitoring

Slide 5

Conclusion

Simulations of rail vehicle modelling are being developed to perform real time estimation of low adhesion

Various filtering techniques will be analysed for the estimation of contact parameters

These techniques will be incorporated on more complex models with non linear characteristics in the suspension system and contact parameters of the rail vehicle

UKACC PhD Presentation Showcase Slide 6

Email: P.Parthasarathy@lboro.ac.uk