防御
发表于 2025-3-25 03:50:51
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
发表于 2025-3-25 07:49:35
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
miniature
发表于 2025-3-25 12:59:11
http://reply.papertrans.cn/67/6668/666785/666785_23.png
indubitable
发表于 2025-3-25 19:11:15
http://reply.papertrans.cn/67/6668/666785/666785_24.png
水土
发表于 2025-3-25 23:09:27
http://reply.papertrans.cn/67/6668/666785/666785_25.png
揭穿真相
发表于 2025-3-26 03:00:10
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
发表于 2025-3-26 07:39:38
http://reply.papertrans.cn/67/6668/666785/666785_27.png
COKE
发表于 2025-3-26 08:35:38
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
发表于 2025-3-26 16:07:17
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
不妥协
发表于 2025-3-26 18:54:04
http://reply.papertrans.cn/67/6668/666785/666785_30.png