Titlebook: Noise and Vibration Mitigation for Rail Transportation Systems; Proceedings of the 1 Jens C.O. Nielsen,David Anderson,Paul de Vos Conferenc

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Experimental and Theoretical Studies on Impact Noise Generation due to Rail Joints, an attempt is made to understand the impact noise generation mechanism experimentally and theoretically. By performing static and running tests, vibratory properties of the track and wheel are investigated first. Second, on the basis of the measurements in the tests, a theoretical model to predict

BAIL

An Explicit Integration Finite Element Method for Impact Noise Generation at a Squat, rail and some other track components are modeled with finite elements in three dimensions, where necessary and appropriate. Realistic contact geometry, including geometric irregularity (squat) in the contact surfaces is considered. The integration is performed in the time domain with an explicit ce

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水土

揭穿真相

On the Importance of Accuracy of Geographic Model Data for Noise Impact Studies,on its network. The new system requires that ProRail computes the noise impact of the yearly traffic on about 60 000 reference points. In addition, ProRail has to demonstrate that the noise does not exceed the NPC at any point..ProRail has to compute the noise level at each reference point using the

Herpetologist

COKE

Characterizing Wheel Flat Impact Noise with an Efficient Time Domain Model,domain wheel/rail interaction model is needed. However, time-domain models are normally time consuming to solve and this makes it difficult to carry out parametric studies and gain insight into physical behaviour. A simple mass-spring equivalent track model is developed here to gain insight into the

奖牌

Study on the Sound Radiation Directivity of a Railway Wheel and the Relationship between Directivitn directivity around it. A straight-web metro wheel is studied in this paper with a radial excitation. First, the near-field sound radiation at the natural frequencies is measured in experiments performed in a semi-anechoic room. The natural frequencies here were determined by modal test. The corres

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