QUIET-TRACK is a new European research project (started in 2013) for track optimisation and monitoring for further noise reduction on urban track. Quiet-Track will focus on very effective track based rolling noise mitigating solutions for trams, regional trains, surface metro and trains in an urban environment. Special attention will be given to embedded track systems. Quiet-Track will develop efficient on-board monitoring systems for rail roughness and of track decay rates, as input to the noise models. Within the scope of this project, Akron will focus on the extension of the existing Wheel-Rail software: development of method for accurate noise calculations below 250 Hz, where the SEA method used in the existing wheel-rail noise computation schemes (Remington model) is not valid. The modelling tools will be enhanced by introducing the real wheel-rail contact conditions in the models (especially important in curves where multi point contact is possible). Technology based on multi-body dynamics and acoustical finite element analysis will be integrated in the software. In this paper, the actual use, value and shortcomings of the existing wheel-rail software will be studied and documented based on a sensitivity analysis of the different input parameters and comparison with in-situ measurements.
QUIET-TRACK: Track optimisation and monitoring for further noise reduction
2014
7 Seiten
Conference paper
English
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