✦ LIBER ✦

DYNAMIC MODELLING OF RAILWAY TRACK: A PERIODIC MODEL BASED ON A GENERALIZED BEAM FORMULATION

✍ Scribed by L. Gry; C. Gontier

Publisher: Elsevier Science
Year: 1997
Tongue: English
Weight: 563 KB
Volume: 199
Category: Article
ISSN: 0022-460X
DOI: 10.1006/jsvi.1995.0671

No coin nor oath required. For personal study only.

✦ Synopsis

Dynamic modelling of railway track is a vital step in view of traffic noise reduction. Considering the track as a periodic structure, the classical properties and methods associated with one-dimensional periodic structures are recalled, then applied to the problem within the framework of the Euler-Bernouilli and Timoshenko beam theories. These methods turn out to be insufficient when compared with experimental data, especially concerning the lateral receptance spectrum. Therefore, an extended beam model is developed, essentially based on the notion of generalized cross-section displacements. Finally, the application of this theory to railway track results in a significant improvement in the computed spectrum, and suggests directions for further investigations.

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