Modeling and analysis of transition-point disappearance in high-speed railway pantograph-catenary system

IF 1.9 4区 工程技术 Q3 ENGINEERING, MECHANICAL
Junqing Chen, Jidong Liu, Jinfa Guan, Feng Han, Jiqing Wu, Weirong Chen
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引用次数: 0

Abstract

During the operation of high-speed railway, the transition-point disappearance phenomenon, which is caused by the deformation of pantograph head, poses a safety threat to the pantograph-catenary system. In this study, the analytical model for transition-point disappearance analysis is presented. The instantaneous profile, as well as the deformation process of the pantograph head under different contact force values and positions or different pantograph-head parameters can be solved using the model. Curve equation, force analysis, coordinate axis rotation, and few other methods are adopted to achieve simplified modeling. The proposed modeling method and analysis conclusion provide theoretical support for the permissible contact force range calculation and pantograph-head parameters optimization to prevent transition-point disappearance. The effectiveness of the proposed model is verified using both finite element simulation and experimental measurements. Finally, a case analysis for the prevention of transition-point disappearance is conducted, using pantographs with the models CX-GI and DSA250 as examples.
高速铁路受电弓-接触网系统过渡点消失建模与分析
在高速铁路运行过程中,由于受电弓头部变形引起的过渡点消失现象对受电弓接触网系统的安全构成了威胁。本文提出了过渡点消失分析的解析模型。利用该模型可求解出不同接触力值、不同接触位置或不同触头参数下触头的瞬时轮廓和变形过程。采用曲线方程、受力分析、坐标轴旋转等几种方法实现简化建模。所提出的建模方法和分析结论为防止过渡点消失的容许接触力范围计算和弓头参数优化提供了理论支持。通过有限元仿真和实验验证了该模型的有效性。最后,以CX-GI型和DSA250型受电弓为例,对过渡点消失的预防进行了实例分析。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Advances in Mechanical Engineering
Advances in Mechanical Engineering 工程技术-机械工程
CiteScore
3.60
自引率
4.80%
发文量
353
审稿时长
6-12 weeks
期刊介绍: Advances in Mechanical Engineering (AIME) is a JCR Ranked, peer-reviewed, open access journal which publishes a wide range of original research and review articles. The journal Editorial Board welcomes manuscripts in both fundamental and applied research areas, and encourages submissions which contribute novel and innovative insights to the field of mechanical engineering
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