西南交通大学学报 2006, 41(6) 705-708 DOI:     ISSN: 0258-2724 CN: 51-1277/U

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本文关键词相关文章
铁道车辆
车轮
B级车轮铸钢
疲劳
可靠性
设计
Goodman-Smith图
本文作者相关文章
陈雷
章梓茂
PubMed
Article by CHEN Lei
Article by ZHANG Zimao

B级车轮铸钢的疲劳可靠性设计Goodman-Smith图

陈雷, 章梓茂

北京交通大学土木工程学院, 北京, 100044

摘要

为获得任意可靠性水平下铁道车辆B级车轮铸钢的疲劳设计依据,利用材料的概率机械性能、疲劳极限、中短与长寿命范围的疲劳S-N曲线参数,确定该铸钢的疲劳可靠性设计Goodm an-Sm ith图.图中用车辆行驶里程度量车轮的疲劳寿命.采用Goodm an修正考虑平均应力效应,疲劳强度由中短与长寿命范围的概率疲劳S-N曲线确定.图中八边形的顶点坐标由全概率模式求解.

关键词 铁道车辆   车轮   B级车轮铸钢   疲劳   可靠性   设计   Goodman-Smith图  

Goodman-Smith Diagram for Fatigue Reliability Design of Grade B Cast Wheel Steel

CHEN Lei, ZHANG Zimao

School of Civil Eng., Beijing Jiaotong University, Beijing 100044, China

Abstract:

To obtain fatigue design data under different reliabilities for grade B cast wheel steel for railway vehicles,a Goodman-Smith diagram of the steel was obtained using probabilistic mechanical properties,fatigue limits,and the data available in S-N curves of the steel covering mid-and-long fatigue lives.The fatigue lives were measured by the running distance of the wheel.The effects of average stresses on fatigue properties were considered in terms of Goodman modification,and the fatigue strength was evaluated with the probabilistic fatigue S-N curves covering the mid-and-short and long lives.The coordinates of octagon vertices of the diagram were determined on an entire probabilistic space.

Keywords: railway vehicle   wheel   grade B cast steel   fatigue   reliability   design   Goodman-Smith diagram  
收稿日期 2006-03-02 修回日期  网络版发布日期  
DOI:
基金项目:

铁道科技发展计划项目(2005J027)

通讯作者:
作者简介: 陈雷(1957- ),男,高级工程师,博士研究生,研究方向为车辆工程,电话:010-51841784,E-mail:zbbhce416@sina.com

参考文献:
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