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rail contact

Experimental characterization of wheel-rail contact patch evolution

Experimental characterization of wheel-rail contact patch evolution

... The contact area and pressure distribution in a wheel/rail contact is essential information required in any fatigue or wear calculations to determine design life, re-grinding, and maintenance ...or ...

12

The Influence of Wheel/Rail Contact Conditions on the Microstructure and Hardness of Railway Wheels

The Influence of Wheel/Rail Contact Conditions on the Microstructure and Hardness of Railway Wheels

... rolling contact fatigue damage is influenced by the properties of the wheel ...wheel/rail contact (derived from dynamic simulations) and observed variations in hardness and ...

17

Wheel–rail contact: experimental study of the creep forces–creepage relationships

Wheel–rail contact: experimental study of the creep forces–creepage relationships

... tangential contact force depends on the material properties of wheel and rail, the creepages and the friction coefficient between surfaces ...wheel-rail contact theories is neglecting the ...

9

Modelling the Dynamic Behaviour of the Wheel Rail Interface by Using a Novel 3D Wheel Rail Contact Model

Modelling the Dynamic Behaviour of the Wheel Rail Interface by Using a Novel 3D Wheel Rail Contact Model

... of rail-wheel interface including precise values for wheel-rail contact ...wheel-rail contact model which is used for dynamic simulation of a suspended wheelset with parameters listed ...

7

Multiple model based real time estimation of wheel rail contact conditions

Multiple model based real time estimation of wheel rail contact conditions

... Multiple Model Based Identification of the Wheel-Rail Contact Condition for Traction and Braking Control I Hussain 1 , TX Mei2 and Mohammad Mirzapur 3 School of Computing, Science and En[r] ...

204

Wheel/Rail Contact Isolation Due to Track Contamination

Wheel/Rail Contact Isolation Due to Track Contamination

... wheel/rail contact region. Clearly contamination of the wheel/rail contact in this manner could isolate the wheel from the track inhibiting the detection of a ...

10

Preliminary Results on Dynamic Analysis of a New Test Rig for Wheel-Rail Contact Studies

Preliminary Results on Dynamic Analysis of a New Test Rig for Wheel-Rail Contact Studies

... ring–shape rail track system was developed for wheel-rail contact ...levels, contact patch sizes and frequency contents of dynamic forces in the test rig models compared to the results from ...

11

Analytical Approach to Vibration Analysis Of the Wheel-rail contact

Analytical Approach to Vibration Analysis Of the Wheel-rail contact

... Hertz contact theory in rail- wheel contact problems can also be found in the recent ...Hertzian contact problem in wheel rail applications ...Hertzian contact theory to ...

10

Reducing the Diameter of Freight Vehicle Wheels  –  The Suitability of Q/D as a Control for Wheel Rail Contact Stress

Reducing the Diameter of Freight Vehicle Wheels – The Suitability of Q/D as a Control for Wheel Rail Contact Stress

... higher contact stress than the previously quoted limiting values, further analysis was carried out to determine which factors had the greatest influence on the contact stress ...the contact stress ...

8

Measuring wheel/rail contact stresses using ultrasound

Measuring wheel/rail contact stresses using ultrasound

... anticipated contact area of the contacting ...a contact computation program [9] that works by replacing the continuous pressure distribution with a discrete set of ...The contact computation applies ...

13

Effect of the wheel/rail contact angle and the direction of the saturated creep force on rail corrugation

Effect of the wheel/rail contact angle and the direction of the saturated creep force on rail corrugation

... of rail corrugation on tight curved ...causing rail corrugation, an elastic vibration model of the leading wheelset-track system is ...cause rail corrugation. The effects of the contact angle ...

15

Contact Analysis of the Two Dimensional Wheel-Rail Based on Finite Element Method

Contact Analysis of the Two Dimensional Wheel-Rail Based on Finite Element Method

... the contact area of wheel - rail, σ x is compressive stress, and the maximum compressive stress occurs near the center of the contact point of wheel ...the contact point, the compressive ...

9

A Novel Approach To Modelling And Simulation Of The Dynamic Behaviour Of The Wheel Rail Interface

A Novel Approach To Modelling And Simulation Of The Dynamic Behaviour Of The Wheel Rail Interface

... The tangential creep forces play a vital role in wheel-rail rolling theory. Carter solved the 2-Dimensional problem of wheel-rail contact rolling theory using a locomotive wheel and a cylindrical ...

7

An ultrasonic sensor for monitoring wheel flange/rail gauge corner contact

An ultrasonic sensor for monitoring wheel flange/rail gauge corner contact

... wheel/rail contact should be confined to the wheel tread/rail head where the geometry is such that the loaded is relatively ...curving contact can occur between the wheel flange and the ...

13

Visualisation and modelling to understand rail rolling contact fatigue cracks in three-dimensions

Visualisation and modelling to understand rail rolling contact fatigue cracks in three-dimensions

... wheel-rail contact situation where the rail head and contacting wheel are subject to high compressive stresses [10] (in excess of tensile yield) together with multi-directional creepage (tangential, ...

29

Investigation on effect of train speed in displacement of railway ballasted track with unsupported sleepers

Investigation on effect of train speed in displacement of railway ballasted track with unsupported sleepers

... maximum contact force of wheel and rail displacement due to velocity changes and the number of unsupported sleepers have been ...of rail and wheel/rail contact force by considering ...

8

Dynamical attitude of non-linearly parameters of rail wheel contact on application of creep coefficient

Dynamical attitude of non-linearly parameters of rail wheel contact on application of creep coefficient

... Adhesion is an important factor in operating the railway vehicles properly. Certain level of adhesion is required to transmit the traction and braking forces properly [1]. If the adhesion falls below that level then ...

5

Contact Force Estimation in the Railway Vehicle Wheel Rail Interface

Contact Force Estimation in the Railway Vehicle Wheel Rail Interface

... and rail head, predict the formation of rolling contact fatigue, and identify any areas of low adhesion present on the ...nonlinear contact mechanics model, development of the Kalman-Bucy filter ...

7

The effect of railway local irregularities on ground vibration

The effect of railway local irregularities on ground vibration

... The dynamics of the vehicle/track subsystem are simulated by considering a multibody vehicle model moving on a flexible track (Figure 3). The wheel/rail forces are defined using Hertz’s theory and allow coupling ...

18

Robust control for independently rotating wheelsets on a railway vehicle using practical sensors

Robust control for independently rotating wheelsets on a railway vehicle using practical sensors

... technique to also ensure its robustness against not only the parametric uncertainties, in particular the variation of two pa- rameters which have significant effect on the wheel-rail contact mechanics [9]: ...

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