A new method for modelling and simulation of the dynamic behaviour of the wheel-rail contact

Anyakwo, Arthur; Pislaru, Crinela; Ball, Andrew

doi:10.1007/s11633-012-0640-6

Cited by 18 publications

(15 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The algorithms can be improved by implementing Gauss-Newton, LevenbergMarquardt, Trust-Region-Reflective method, and so forth. For example, Levenberg-Marquardt algorithm is a numerical optimization method used to reveal the solution of nonlinear function by minimization over a region of parameters of that function [35].…”

Section: Methods Of Computationmentioning

confidence: 99%

Dynamic Investigation of the Hunting Motion of a Railway Bogie in a Curved Track via Bifurcation Analysis

Uyulan

Gökaşan

Boğosyan

2017

Mathematical Problems in Engineering

View full text Add to dashboard Cite

The main purpose of this paper is to analyze and compare the Hopf bifurcation behavior of a two-axle railway bogie and a dual wheelset in the presence of nonlinearities, which are yaw damping forces in the longitudinal suspension system and heuristic creep model of the wheel-rail contact including dead-zone clearance, while running on a curved track. Two-axle railway bogie and dual wheelset were modeled using 12-DOF and 8-DOF system with considering lateral, vertical, roll, and yaw motions. By utilizing Lyapunov's indirect method, the critical hunting speeds related to these models are evaluated as track radius changes. Hunting defined as the lateral vibration of the wheelset with a large domain was characterized by a limit cycle-type oscillation behavior. Influence of the curved track radius on the lateral displacement of the leading wheelset was also investigated through 2D bifurcation diagram, which is employed in the design of a stable model. Frequency power spectra at critical speeds, which are related to the subcritical and supercritical bifurcations, were represented by comparing the two-axle bogie and dual wheelset model. The evaluated accuracy to predict the critical hunting speed is higher and the hunting frequency in unstable region is lower compared to the dual wheelset model.

show abstract

Section: Methods Of Computationmentioning

confidence: 99%

Dynamic Investigation of the Hunting Motion of a Railway Bogie in a Curved Track via Bifurcation Analysis

Uyulan

Gökaşan

Boğosyan

2017

Mathematical Problems in Engineering

View full text Add to dashboard Cite

show abstract

“…The equation has two real values of * and ) corresponding to the twenty-one specified numerical points. The solution of the variables must satisfy Equation (13). The following indentation condition must be considered:…”

Section: Fig 6 Minimum Difference (Right Wheel-rail Contact)mentioning

confidence: 99%

“…The normal contact forces [12] acting on the wheel-rail contact patch depend on the axle load, wheelset mass and contact angle. The wheelset is assumed to be on a straight track with the axle load (W load ) of 110kN.…”

Section: Normal Contact Problemmentioning

confidence: 99%

See 1 more Smart Citation

Modeling the dynamic behaviour of the wheel rail interface using a novel 3D wheel-rail contact model

Anyakwo¹,

Pislaru²,

Ball³

et al. 2011

5th IET Conference on Railway Condition Monitoring and Non-Destructive Testing (RCM 2011)

View full text Add to dashboard Cite

Methods for multibody modelling and simulation should accurately replicate the dynamic behaviour of rail-wheel interface including precise values for wheel-rail contact positions. This paper studies the development of a novel 3-D wheel-rail contact model which is used for dynamic simulation of a suspended wheelset with parameters listed for a typical Mark IV coach. The contact point locations on the wheel and rail are determined by the minimum difference method considering the lateral displacement, yaw angle and the roll angle. The proposed new 3D wheel-rail contact model can be applied in railway condition monitoring techniques to estimate the wheel geometry parameters and thus to achieve practical optimised wheel-rail interfaces.

show abstract

“…The studies also covered a comparative analysis of algorithms and optimization methods including ways of reducing computer time to solve an optimization problem. Analytical optimization methods are used only for quasi-linear systems for which an integral expression of optimization criterion could be explicitly written [6]. In general, the principles of optimization are not widespread and rarely used in the construction of running parts of rail service cars.…”

Section: Introductionmentioning

confidence: 99%

Mathematical Model of Oscillations of Bearing Body Frame of Emergency and Repair Railcars

Хромова¹,

Mukhamedova²,

Yutkina³

2017

Transport Problems

View full text Add to dashboard Cite

Summary. Nowadays, the importance of maintenance and effective use of available railcars in the railway transport is growing, and researchers and technical experts are working to address this issue with the use of various techniques. The authors address the use of analytical technique, which includes mathematical solutions for flexural and longitudinal fluctuations of the bearing framework of a railcar body frame. The calculation is performed in connection with the modernization of the body frame of emergency and repair rail service car, taking into account the variability in section, mass, longitudinal stiffness, and bending stiffness. It allows for extension of the useful life of their operation, with special focus on vehicles owned by Joint-Stock Company "Uzbekistan Railways".The simulation of equivalent bearing body frame of emergency and repair rail service car was carried out using an elastic rod with variable parameters including stiffness and mass. The difference between the proposed model and the existing ones is due to the variability in cross section, mass, and the longitudinal and bending stiffness along the length of equivalent beam, which corresponds to the actual conditions of operation and data of the experimental studies conducted by the authors on the bearing frames of electric locomotives' variable sections.The frequency analysis that was carried out with the use of the Mathcad 14 programming showed that the frequencies of natural oscillations change on n harmonicas = 1, 2, 3 … 5. As regards longitudinal oscillations of system, in case of introduction of the damping subfloor, the frequency of natural oscillations of the upgraded rail car frame λ 1mn increases on comparing with standard λ 1n (for example, in case of n = 5 the frequency is 0.587 and 0.602 Hz/m, respectively).

show abstract

A new method for modelling and simulation of the dynamic behaviour of the wheel-rail contact

Cited by 18 publications

References 11 publications

Dynamic Investigation of the Hunting Motion of a Railway Bogie in a Curved Track via Bifurcation Analysis

Dynamic Investigation of the Hunting Motion of a Railway Bogie in a Curved Track via Bifurcation Analysis

Modeling the dynamic behaviour of the wheel rail interface using a novel 3D wheel-rail contact model

Mathematical Model of Oscillations of Bearing Body Frame of Emergency and Repair Railcars

Contact Info

Product

Resources

About