Test research of dynamic behavior of medium and low speed maglev train-rail-girder system

2021 ◽  
Author(s):  
Andong Zheng ◽  
Guofeng Zeng ◽  
Ziping Han ◽  
Junhu Gong
Keyword(s):  
Dynamic Behavior ◽  
Maglev Train ◽  
Low Speed

The Effect of Loading Rates on Crack Dynamic Behavior Under Medium–Low Speed Impacts

2018 ◽  
Vol 32 (1) ◽  
pp. 93-104 ◽  
Author(s):  
Peng Ying ◽  
Zheming Zhu ◽  
Lei Zhou ◽  
Meng Wang ◽  
Yuqing Dong ◽  
...  
Keyword(s):  
Dynamic Behavior ◽  
Low Speed ◽  
Loading Rates

scholarly journals Numerical Analysis of a New Block-Type Rail Bearing Beam for the Mid-Low-Speed Maglev Train

2021 ◽  
Vol 2021 ◽  
pp. 1-16
Author(s):  
Wubin Wang ◽  
Yandong Li ◽  
Kang Xie ◽  
Zhichao Huang ◽  
Linchuan Shi
Keyword(s):  
Finite Element ◽  
Fem Simulation ◽  
Internal Force ◽  
Block Type ◽  
Vertical Acceleration ◽  
Beam Structure ◽  
Maglev Train ◽  
Element Analysis ◽  
Low Speed ◽  
Beneficial Effects

In this study, a new block-type rail bearing beam is presented, which consists of a cast-in-place base and prefabricated blocks. The finite element analysis is conducted to assess the proposed new rail bearing beam structure. The performed finite element method (FEM) simulation focused on the dynamic stress at the bottom of the rail bearing beam and structural internal force and deformation under the case of train loading, etc. Besides, the relationship between first-order natural frequency and activation frequency in the new support rail beam structure is analyzed and the beneficial effects on the internode connection structure are quantified. The results show that the increase in driving speed has the most significant effect on the vertical acceleration of the structure, and the self-vibration frequency of the structure is relatively large, which means the structure is safe. Since previous research seldom focuses on this block-type rail bearing beam, this study lays a valuable foundation for the construction of a rail bearing beam for the mid-low-speed maglev train.

scholarly journals Study on the optimization of linear induction motor traction system for fast-speed maglev train

2018 ◽  
Vol 4 (3 suppl. 1) ◽  
pp. 156-164
Author(s):  
Ying Yang ◽  
Jiangmin Deng ◽  
Laisheng Tong ◽  
Xiaoсhun Li ◽  
Qibiao Peng ◽  
...  
Keyword(s):  
Induction Motor ◽  
High Speed ◽  
Input Voltage ◽  
Force Characteristic ◽  
Maximum Speed ◽  
Maglev Train ◽  
Linear Induction ◽  
Low Speed ◽  
Linear Induction Motor ◽  
Fast Speed

Background: The short stator linear induction motor (LIM) is normally used in medium-low speed maglev train. The restriction by mounting space on bogie and motor input voltage from the third power supply rail lead that the maximum speed of medium-low speed maglev train can reach no more than 120 km/h. Aim: In this paper, by means of the LIM design optimization, improvement of the LIM force characteristic in high speed range, the maximum speed of medium-low speed maglev train can reach 160 km/h. Methods: After comparing the LIM theoretical calculation and actual test data, it shows that the new designed LIM is effective. Conclusion: Afterwards, by installing the new designed LIMs, the traditional medium-low speed maglev train becomes a fast-speed maglev train, and it has a bright future in transportation applications.

scholarly journals Study on reliability analysis of suspension controller of the medium and low speed maglev vehicle

2018 ◽  
Vol 4 (3 suppl. 1) ◽  
pp. 253-263
Author(s):  
Hongliang Pan ◽  
Junqi Xu ◽  
Haitao Huang ◽  
Zhao Xu
Keyword(s):  
Stress Analysis ◽  
Reliability Analysis ◽  
Block Diagram ◽  
Reliability Prediction ◽  
Analysis Method ◽  
Counting Method ◽  
Maglev Train ◽  
Diagram Method ◽  
Low Speed ◽  
Maglev Vehicle

Suspension controller is the core device of suspension system of the medium and low speed maglev vehicle, its reliability directly affects the stability, reliability and safety operation of the whole medium and low speed maglev train. Reliability analysis is of great theoretical and practical value for improving the performance of the suspension controller. Taking Hunan Changsha maglev express as an application case, based on the mechanism and functional structure of the suspension controller, the reliability of the suspension controller is analyzed and studied. According to the Chinese standard GJB/Z 299C, the reliability prediction handbook for electronic equipment, the reliability of the suspension controller is calculated and analyzed by synthesizing the stress analysis method, the component counting method and the RBD reliability block diagram method. The reliability weak points of the suspension controller are analyzed, and the design optimization proposal is suggested to improve the suspension controller reliability. Background: Medium and low speed maglev traffic has gained wide attention and engineering application in China. It is very necessary to study the reliability of the medium and low speed maglev train. Purpose: The purpose of this paper is to carry out reliability research on the levitation control system of medium low speed maglev train. Methods: The stress analysis method, component counting method and RBD reliability block diagram method are used to calculate and analyze the reliability of the suspension controller. Results: The reliability quantitative analysis results of the suspension controller are analyzed, and the reliability weakness of the suspension controller is analyzed and studied. A design optimization proposal to improve the reliability of the suspension controller is proposed. Conclusion: Through the reliability prediction analysis of the suspension controller, the reliability and weakness of the suspension controller can be determined, which provides theoretical guidance for the improvement of the design scheme and the performance optimization of the maglev train suspension controller.

Sign in / Sign up

Export Citation Format

Share Document