Analysis of Dropper Stress in a Catenary System for a High-Speed Railway

Author:

Chen Liming1,Sun Juan2,Pan Like1ORCID,He Fan2ORCID

Affiliation:

1. Standards & Metrology Research Institute, China Academy of Railway Sciences Corporation Limited, Beijing 100081, China

2. School of Science, Beijing University of Civil Engineering and Architecture, Beijing 100044, China

Abstract

When the pantograph slides over the contact wire at a high speed, there are cyclic stresses acting on droppers. The cyclic stresses are related with the fatigue life and fracture of the dropper. Thus, the stress calculation of the dropper is particularly important to ensure the safe operation of a train. In this paper, a simple model based on a span of five droppers is constructed. The contact wire is treated as a beam element and the vibration equation under a dynamic force is deduced. Then, the stresses are performed numerically using the finite difference method. The stress-time relationship under a dynamic force is obtained and compared with that under a constant force. The results show that there is a large shock effect during the deformation of dropper from straightening to compression and then bending. The dynamic force could cause much higher stresses than a constant force. It indicates that a dynamic force has a more significant impact on the stress value of dropper than a constant force.

Funder

Research Project of China Academy of Railway Sciences Corporation Limited

Publisher

Hindawi Limited

Subject

General Engineering,General Mathematics

Reference21 articles.

1. Analyses of Contact Force Fluctuation between Catenary and Pantograph.

2. A mathematical study of the pantograph/catenary dynamic interaction on transition spans;J. Benet;Proceedings of the World Congress on Engineering,2007

3. A pantograph arcing model for electrified railways with different speeds

4. Dynamics of Pantograph–Catenary Arc During the Pantograph Lowering Process

5. Pantograph-catenary arcing detection based on electromagnetic radiation;G. Q. Gao;IEEE Transactions on Electromagnetic Compatibility,2019

Cited by 3 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3