A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Equivalent Dynamics Model of Ballasted Track Bed
Increase of track maintenance costs and change of track geometry are due to the vibration of ballasted railway. The aim of this thesis work is to model train-track system as a multiply degree of freedom systems by Lump Parameter Method. In this model, there are two system which both are modeling as series of mass, dampers and stiffness with the irregularity of rail as exciting signal. The two subsystems are coupled by Nonlinear Hertz contact theory, and then the dynamic system is simulated in Matlab by Newmark Beta method and Runge-Kutta method to obtain the dynamic situation of the system. In addition, the ballast parameters are described in details, and the rail is treated as Euler beam. Moreover, estimate the impact of the other factors as rail, ballast, sleeper, the vehicle speed and the irregularity level of vibration system. The model is validated by comparing with the experiment result done by predecessor. Fundamental fracture analysis of track is also completed, discussed in static analysis, as a start of further work such as dynamical one.
Equivalent Dynamics Model of Ballasted Track Bed
Increase of track maintenance costs and change of track geometry are due to the vibration of ballasted railway. The aim of this thesis work is to model train-track system as a multiply degree of freedom systems by Lump Parameter Method. In this model, there are two system which both are modeling as series of mass, dampers and stiffness with the irregularity of rail as exciting signal. The two subsystems are coupled by Nonlinear Hertz contact theory, and then the dynamic system is simulated in Matlab by Newmark Beta method and Runge-Kutta method to obtain the dynamic situation of the system. In addition, the ballast parameters are described in details, and the rail is treated as Euler beam. Moreover, estimate the impact of the other factors as rail, ballast, sleeper, the vehicle speed and the irregularity level of vibration system. The model is validated by comparing with the experiment result done by predecessor. Fundamental fracture analysis of track is also completed, discussed in static analysis, as a start of further work such as dynamical one.
Equivalent Dynamics Model of Ballasted Track Bed
Daoud, Said (author) / Guowei, Xie (author) / Xiaoming, Liu (author)
2012-01-01
Local oai:bth.se:arkivex1EBA477CFA794267C1257B2600345A70
Theses
Electronic Resource
English
DDC:
624
Understanding ballasted track behaviour
British Library Online Contents | 1996
Track Modulus: Ballasted and Direct Fixation Track
| TIBKAT | 2019
Frost-Thaw Effects on Ballasted Track
| British Library Conference Proceedings | 1996
Coupling of vertical and lateral dynamics of ballasted track
| British Library Conference Proceedings | 2002