This paper investigates hybrid methodologies to predict railway ground-borne vibration as required at pre-project stages, for instance before a tramway network is constructed. In the hybrid approach, the train-track problem (source) is solved numerically and the soil transfer functions (propagation) are measured. The key point is the coupling between the two terms.
Two methodologies (force coupling and velocity coupling) are numerically tested and compared to a reference model. The obtained discrepancies are in the range of other existing methodologies for stiff and medium soils, but important errors are observed for softer soils. Corrections are tested numerically to explain the source of discrepancies and reduce them.
Towards Hybrid Models for the Prediction of Railway Induced Vibration: Numerical Verification of Two Methodologies
Notes Numerical Fluid Mech.
Noise and Vibration Mitigation for Rail Transportation Systems ; Chapter : 46 ; 437-444
2021-04-09
8 pages
Article/Chapter (Book)
Electronic Resource
English
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