RESPONSE OF AN INFINITE TIMOSHENKO BEAM ON A VISCOELASTIC FOUNDATION TO A HARMONIC MOVING LOAD

RESPONSE OF AN INFINITE TIMOSHENKO BEAM ON A VISCOELASTIC FOUNDATION TO A HARMONIC MOVING LOAD

The dynamic stiffness matrix of an infinite Timoshenko beam on viscoelastic foundation to a harmonic moving load is established. This dynamic stiffness matrix is essentially a function of the velocity and frequency of the harmonic moving load. The critical velocities and the resonant frequencies can...

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Veröffentlicht in:Journal of sound and vibration 2001-04, Vol.241 (5), p.809-824
Hauptverfasser: CHEN, Y.-H., HUANG, Y.-H., SHIH, C.-T.
Format: Artikel
Sprache:eng
Schlagworte:
Acoustics
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Physics
Structural acoustics and vibration
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Zusammenfassung:The dynamic stiffness matrix of an infinite Timoshenko beam on viscoelastic foundation to a harmonic moving load is established. This dynamic stiffness matrix is essentially a function of the velocity and frequency of the harmonic moving load. The critical velocities and the resonant frequencies can be easily determined. The dynamic responses of a European high-speed railway subjected to a harmonic moving load are calculated as an example for demonstration and discussion.
ISSN:0022-460X
1095-8568
DOI:10.1006/jsvi.2000.3333