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Towards Integrated Vehicle-track.underground Modelling of Train Induced Wave Propagation

Håkan Lane (Institutionen för konstruktionsteknik, Datorintegrerad konstruktionsmekanik) ; Torbjörn Ekevid (Institutionen för konstruktionsteknik, Datorintegrerad konstruktionsmekanik) ; Nils-Erik Wiberg (Institutionen för konstruktionsteknik, Datorintegrerad konstruktionsmekanik)
Book of Abstracts. Volume I: Plenary Sessions, Invited Parallel Sessions, Contributed Sessions and Posters. 4th European Congress on Computational Methods in Applied Sciences and Engineering, July 24-28 2004 Jyväskylä, Finland p. 115. (2004)
[Konferensbidrag, övrigt]

A moving train is a complex dynamic system. It may cause propagating waves to the surroundings potentially leading to detrimental effects for the train itself, the track construction as well as the surroundings. In special circumstances with a combination of soft soil and high speed a shock wave can appear and cause severe damage. Previous reports from the group have shown studies of this problem under a load representing the moving train. A hybrid FEM/SBFEM procedure has been developed to eliminate unwanted reflections from the unbounded region outside the FEM discretised body. This paper intends to integrate the vehicle, track and underground into a complete dynamic system. The Lagrangian equations of motion for a high-speed train have been inserted into the system of equations of the FEM elastic problem for the rest of the structure. Two different velocities have been used to simulate passage in typical Swedish conditions. The resulting vibrations are presented and analysed.

Nyckelord: Rigid body dynamics, vibrations, FEM, wave propagation, railway mechanics

Denna post skapades 2006-09-28.
CPL Pubid: 6989


Institutioner (Chalmers)

Institutionen för konstruktionsteknik, Datorintegrerad konstruktionsmekanik (1900-2004)


Teknisk mekanik

Chalmers infrastruktur