scholarly journals Systemic values of enhanced dynamic damping in concrete sleepers – Comments on the paper: Ahn S, Kwon S, Hwang Y-T, Koh H-I, Kim H-S, Park J. Complex structured polymer concrete sleeper for rolling noise reduction of high-speed train system, Composite Structures, 2019, 223:110944 (doi https://doi.org//10.1016/j.compstruct.2019.110944)

2020 ◽  
Vol 234 ◽  
pp. 111711 ◽  
Author(s):  
Sakdirat Kaewunruen
Keyword(s):  
Noise Reduction ◽  
Composite Structures ◽  
High Speed ◽  
Polymer Concrete ◽  
High Speed Train ◽  
Dynamic Damping ◽  
Rolling Noise ◽  
Train System

Complex structured polymer concrete sleeper for rolling noise reduction of high-speed train system

2019 ◽  
Vol 223 ◽  
pp. 110944 ◽  
Author(s):  
Sangkeun Ahn ◽  
Semin Kwon ◽  
Yeon-Taek Hwang ◽  
Hyo-In Koh ◽  
Hak-Sung Kim ◽  
...  
Keyword(s):  
Noise Reduction ◽  
High Speed ◽  
Polymer Concrete ◽  
High Speed Train ◽  
Rolling Noise ◽  
Train System

Harvesting Wind Energy by a Triboelectric Nanogenerator for an Intelligent High-Speed Train System

2021 ◽  
pp. 1490-1499
Author(s):  
Chuguo Zhang ◽  
Yuebo Liu ◽  
Baofeng Zhang ◽  
Ou Yang ◽  
Wei Yuan ◽  
...  
Keyword(s):  
Wind Energy ◽  
High Speed ◽  
Triboelectric Nanogenerator ◽  
High Speed Train ◽  
Train System

Cost–Benefit Analysis of Investment in High-Speed Train System in Spain

2006 ◽  
Vol 1960 (1) ◽  
pp. 135-141 ◽  
Author(s):  
Gema Carrera-Gómez ◽  
Juan Castanedo-Galán ◽  
Pablo Coto-Millán ◽  
Vicente Inglada ◽  
Miguel Angel Pesquera
Keyword(s):  
High Speed ◽  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
Benefit Analysis ◽  
High Speed Train ◽  
Train System

scholarly journals Dynamic Interaction of the “Bridge-Train” System on High-Speed Railways

2020 ◽  
Vol 157 ◽  
pp. 06015
Author(s):  
Leonid Diachenko ◽  
Vladimir Smirnov
Keyword(s):  
Numerical Model ◽  
High Speed ◽  
Natural Frequencies ◽  
Dynamic Interaction ◽  
Dynamic Processes ◽  
Bridge Structure ◽  
High Speed Train ◽  
Key Factor ◽  
Passenger Trains ◽  
Train System

This work contains the results of a research of the dynamic processes in the “bridge-train” system while passenger trains move over a bridge structure (overpass) in high-speed. The article presents the methodology of mathematic modelling, and the basic differential equations of the studied system elements motion are provided. Also there is a description of dynamic interaction of the bridge-train system numerical model based on the FEM. In general, taking into account in the design scheme of the “bridge” system not only spans, but also piers with a foundation, it is possible to more accurately determine the values of the bridge natural frequencies, which is a key factor in assessing the dynamic response of a structure when passing a high-speed train.

High speed train noise emission: Latest investigation of the aerodynamic/rolling noise contribution

2006 ◽  
Vol 293 (3-5) ◽  
pp. 535-546 ◽  
Author(s):  
C. Mellet ◽  
F. Létourneaux ◽  
F. Poisson ◽  
C. Talotte
Keyword(s):  
High Speed ◽  
High Speed Train ◽  
Noise Emission ◽  
Rolling Noise ◽  
Noise Contribution

scholarly journals Research on Aerodynamic Noise Reduction for High-Speed Trains

2016 ◽  
Vol 2016 ◽  
pp. 1-21 ◽  
Author(s):  
Yadong Zhang ◽  
Jiye Zhang ◽  
Tian Li ◽  
Liang Zhang ◽  
Weihua Zhang
Keyword(s):  
Noise Reduction ◽  
High Speed ◽  
Low Noise ◽  
Broadband Noise ◽  
Full Scale ◽  
Noise Model ◽  
Aerodynamic Noise ◽  
High Speed Train ◽  
Detached Eddy Simulation ◽  
Noise Sources

A broadband noise source model based on Lighthill’s acoustic theory was used to perform numerical simulations of the aerodynamic noise sources for a high-speed train. The near-field unsteady flow around a high-speed train was analysed based on a delayed detached-eddy simulation (DDES) using the finite volume method with high-order difference schemes. The far-field aerodynamic noise from a high-speed train was predicted using a computational fluid dynamics (CFD)/Ffowcs Williams-Hawkings (FW-H) acoustic analogy. An analysis of noise reduction methods based on the main noise sources was performed. An aerodynamic noise model for a full-scale high-speed train, including three coaches with six bogies, two inter-coach spacings, two windscreen wipers, and two pantographs, was established. Several low-noise design improvements for the high-speed train were identified, based primarily on the main noise sources; these improvements included the choice of the knuckle-downstream or knuckle-upstream pantograph orientation as well as different pantograph fairing structures, pantograph fairing installation positions, pantograph lifting configurations, inter-coach spacings, and bogie skirt boards. Based on the analysis, we designed a low-noise structure for a full-scale high-speed train with an average sound pressure level (SPL) 3.2 dB(A) lower than that of the original train. Thus, the noise reduction design goal was achieved. In addition, the accuracy of the aerodynamic noise calculation method was demonstrated via experimental wind tunnel tests.

Sign in / Sign up

Export Citation Format

Share Document