Distributed parameter and finite element models for wave propagation in railway contact lines

A distributed parameter model of a railway two-level catenary system is presented for the analysis of the coupled wave dynamics. The wires are modelled as two straight axis parallel beams, with linear equilibrium equations, and the moving load applied by the pantograph is modelled as a constant conc...

Full description

Saved in:
Bibliographic Details
Published in:Journal of sound and vibration 2017-12, Vol.410, p.1-18
Main Authors: Sorrentino, S., Anastasio, D., Fasana, A., Marchesiello, S.
Format: Article
Language:English
Subjects:
Distributed control systems
Distributed parameter model
Equilibrium equations
Finite element analysis
Finite element method
Finite element model
Galerkin method
Load
Mathematical models
Moving loads
Order parameters
Overhead contact lines
Pantographs
Propagation
Railroads
Wave propagation
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A distributed parameter model of a railway two-level catenary system is presented for the analysis of the coupled wave dynamics. The wires are modelled as two straight axis parallel beams, with linear equilibrium equations, and the moving load applied by the pantograph is modelled as a constant concentrated travelling force. The general solution is sought by an application of the Ritz–Galerkin method, and then compared with direct time integrations of a finite element model (FEM), achieved by two different integration schemes. The proposed model provides a valid reference for appropriately selecting the FEM parameters, in order to reduce the errors due to spurious modes, affecting the numerical integrations especially at high speeds of the moving pantograph.
ISSN:0022-460X
1095-8568
DOI:10.1016/j.jsv.2017.08.008