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受电弓强度参数灵敏度分析及疲劳寿命计算
Sensitivity analysis of strength parameters and calculation of fatigue life of pantograph
- 机车电传动 2023年第3期 页码：141-149
- 作者机构：
1.西南交通大学 轨道交通运载系统全国重点实验室，四川 成都 610031
2.西南交通大学 机械工程学院，四川 成都;610031
- 作者简介：
梅桂明（1974—），男，博士，副研究员，硕士生导师，主要从事受电弓-接触网系统动力学的研究；E-mail: 13880068468@163.com
- 基金信息：四川省自然科学基金资助项目(2022NSFSC0468;2022NSFSC1937)
DOI：10.13890/j.issn.1000-128X.2023.03.103
中图分类号： U264.3+4;U231纸质出版日期：2023-05-10，
收稿日期：2023-01-16，
修回日期：2023-02-06，
- 稿件说明：
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张巍, 祁文延, 罗群, 等. 受电弓强度参数灵敏度分析及疲劳寿命计算[J]. 机车电传动, 2023(3): 141-149.
ZHANG Wei, QI Wenyan, LUO Qun, et al. Sensitivity analysis of strength parameters and calculation of fatigue life of pantograph[J]. Electric Drive for Locomotives,2023(3): 141-149.
张巍, 祁文延, 罗群, 等. 受电弓强度参数灵敏度分析及疲劳寿命计算[J]. 机车电传动, 2023(3): 141-149. DOI： 10.13890/j.issn.1000-128X.2023.03.103.
ZHANG Wei, QI Wenyan, LUO Qun, et al. Sensitivity analysis of strength parameters and calculation of fatigue life of pantograph[J]. Electric Drive for Locomotives,2023(3): 141-149. DOI： 10.13890/j.issn.1000-128X.2023.03.103.
摘要
受电弓作为列车受流的关键部分，其强度及疲劳寿命对列车的稳定运行起关键作用，文章以某地铁线路搭载受电弓为例，展开了受电弓强度参数灵敏度及疲劳寿命的研究。首先，建立受电弓有限元模型进行静强度分析以及强度校核，并通过响应面法对其上框架展开了灵敏度分析；其次，基于准静态叠加法将线路实测数据转换为受电弓上框架的疲劳载荷应力谱；最后，结合疲劳分析软件nCode对受电弓上框架展开了疲劳分析预
测。结果表明：该受电弓框架在额定工作高度下的最大应力满足材料强度校核要求，各参数对上框架最大应力的影响程度从大到小依次为上框架厚度
a
、上框架厚度
b
、泊松比、弹性模量，且受电弓上框架最小寿命值满足标准对疲劳寿命的规定要求。
Abstract
Pantograph is a critical part in the current receiving of trains
and its strength and fatigue life are of great importance to the stable operation of trains. This paper presents a research of the sensitivity and fatigue life of pantograph strength parameters taking a pantograph of a subway line as an example. Firstly
a pantograph finite element model was established to analyze the static strength and check the strength
and a sensitivity analysis of the upper frame was carried out using the response surface method. Secondly
the measured data was converted into the fatigue load spectrum of the upper frame based on the quasi-static superposition method. Finally
combined with the fatigue analysis software nCode
the fatigue analysis and prediction of the upper frame were carried out. The results show that the maximum stress of the pantograph frame at the rated working height meets the strength verification requirements of the material. The degrees of influence of the parameters on the maximum stress of the upper frame in the order from large to small are: the thickness of the upper frame
a
the thickness of the upper frame
b
the Poisson's ratio
the elastic modulus. In addition
the minimum life of the upper frame on the pantograph meets the specified requirements of the standard for fatigue life.
关键词
受电弓静强度疲劳寿命响应面法准静态应力叠加法
Keywords
pantographstatic intensityfatigue liferesponse surface methodquasi-static stress superposition method
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