Characteristic Analysis of Superconducting LSM for the Wheel-rail-guided Very High Speed Train according to Winding Method of the Ground 3-phase Coils

2014 ◽  
Vol 63 (8) ◽  
pp. 1164-1169 ◽  
Author(s):  
Chan-Bae Park ◽  
Byung-Song Lee ◽  
Chang-Young Lee
Keyword(s):  
High Speed ◽  
High Speed Train ◽  
Characteristic Analysis ◽  
Very High

A Study on the Structure of Linear Synchronous Motor for 600km/h Very High Speed Train

2013 ◽  
Vol 416-417 ◽  
pp. 317-321 ◽  
Author(s):  
Chan Bae Park ◽  
Byung Song Lee ◽  
Jae Hee Kim ◽  
Jun Ho Lee ◽  
Hyung Woo Lee
Keyword(s):  
High Speed ◽  
Type System ◽  
Synchronous Motor ◽  
Propulsion System ◽  
Contact Method ◽  
High Speed Train ◽  
Maglev Train ◽  
Railway Systems ◽  
Linear Synchronous Motor ◽  
Very High

Recently, an interest in a hybrid system combining only the merits of the conventional wheel-rail system and Maglev propulsion system is growing as an alternative to high-speed maglev train. This hybrid-type system is based on wheel-rail method, but it enables to overcome the speed limitation by adhesion because it is operated by a non-contact method using a linear motor as a propulsion system and reduce the overall construction costs by its compatibility with the conventional railway systems. Therefore, a comparative analysis on electromagnetic characteristics according to the structural combinations on the stator-mover of Linear Synchronous Motor (LSM) for Very High Speed Train (VHST) maintaining the conventional wheel-rail method is conducted, and the structure of coreless superconducting LSM suitable for 600 km/h VHST is finally proposed in this paper.

The Effect of Single Pulse, Double Pulse and ForceArc MIG Welding Technology on Mechanical Properties of Welding Joint for 5083 Aluminum Alloy Used in High-Speed Train Body

2011 ◽  
Vol 337 ◽  
pp. 460-465
Author(s):  
Lei Su ◽  
Yuan Nie ◽  
Hua Ji ◽  
Chuan Ping Ma ◽  
Shao Hua Yan ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
High Speed ◽  
Single Pulse ◽  
Double Pulse ◽  
High Speed Train ◽  
Welding Joint ◽  
5083 Aluminum Alloy ◽  
Very High

The technology of lightening manufacture for aluminum alloy train body is one key of manufacturing high-speed train . The train body is a whole bearing loading tubular structure which is welded together by the large, hollow, thin-walled aluminum extrusion. Therefore，the demand for welding quality of aluminum alloy train body is very high，and the mechanical properties of joints severely affected the overall strength of welded components. To solve this problem ,we use the 421 EXPERT forceArc MIG of PHOENIX series of German EWM company to perform three types of experiments of single pulse, double pulse, and forceArc welding ,and then effect of three welding methods on mechanical properties of Welding joint for 5083 aluminum alloy used in high-speed train body is compared.

Probabilistic Fatigue Property of Aluminium Alloy Welded Joint for High-Speed Train

2010 ◽  
Vol 118-120 ◽  
pp. 527-531 ◽  
Author(s):  
Hua Zou ◽  
Wei Li ◽  
Qiang Li ◽  
Ping Wang
Keyword(s):  
Welded Joints ◽  
High Speed ◽  
Welded Joint ◽  
Fatigue Property ◽  
Fatigue Properties ◽  
High Speed Train ◽  
Loading Cycle ◽  
Grouping Method ◽  
Loading Modes ◽  
Very High

Four kinds of aluminum alloy welded joints widely used in car-body for high-speed train were experimentally examined to clarify their probabilistic fatigue properties. Based on BS8118 and IIW standard criterions, the probabilistic fatigue limits for these four welded joints, corresponding to loading cycle of 2×106, are evaluated under two different loading modes. In terms of the extrapolation proposed by Eurocode 9 criterion, the corresponding probabilistic S-N curves in very high cycle regime are obtained, combined with grouping method and lifting and lowering method.

scholarly journals Evaluation of brake parameters in copper discs of various thicknesses and speeds using Neodymium – Iron – Boron Magnets

2018 ◽  
Vol 144 ◽  
pp. 01003
Author(s):  
G. L. Anantha Krishna ◽  
K. M. Sathish Kumar
Keyword(s):  
High Speed ◽  
Permanent Magnets ◽  
Automotive Applications ◽  
High Speed Train ◽  
Speed Reduction ◽  
Thick Disc ◽  
Application Condition ◽  
Neodymium Iron Boron ◽  
Experimental Analyses ◽  
Very High

Neodymium – Iron – Boron (NdFeB) permanent magnets of 12.5 mm thickness and 50 mm diameter are chosen for analyses because of their higher remanence and coercivity. Experimental analyses were carried out with Copper discs of thickness 4 mm, 6 mm and 8 mm at 2000 rpm, 3000 rpm, 4000 rpm and 5000 rpm. Experiments were conducted with three different positions of magnets such as 2 coaxial magnets, single magnet and single magnet with sudden application conditions. The brake parameters recorded are % speed reduction, deceleration and time taken. In 2 coaxial magnets condition, brake parameters are better in 6 mm thick disc. In single magnet condition, the brake parameters in 6 mm thick disc are found to be more consistent than 4 mm and 8 mm thick discs. In single magnet with sudden application condition, in 4 mm thick disc, the brake parameters are found better. During analysis, very high repulsion was experienced by magnet with 8 mm thick Copper disc at all the above mentioned speeds in single magnet with sudden application condition. For high speed train applications, single magnet condition with 6mm thick disc may be suitable. For high speed automotive applications, single magnet with sudden application condition with 4 mm thick disc may be suitable.

Aerodynamic Characteristic Analysis of Flow Structure around the High-Speed Train Equipment Bay

2016 ◽  
Vol 693 ◽  
pp. 11-16 ◽  
Author(s):  
Yong Chang Zhang ◽  
Yu Gong Xu ◽  
Le Le Zhang
Keyword(s):  
Spectral Analysis ◽  
Flow Structure ◽  
Pressure Fluctuation ◽  
High Speed ◽  
Aerodynamic Characteristic ◽  
Influence Factors ◽  
High Speed Train ◽  
Characteristic Analysis ◽  
Train Speed ◽  
Improved Model

An improved train model, which contributes to obtain the aerodynamic characteristic of the high-speed train equipment bay, is established. By building a VEB (vehicle equipment bay) model in it, this improved model can demonstrate air flow around the VEB. The result shows that pressure fluctuation appears around the VEB, which gives visible difference from the classical train model. Applying the spectral analysis, the influence factors (include position and train speed) of the pressure fluctuation is studied.

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