基于AAR标准的货车疲劳寿命评估  

Fatigue life analysis of freight car based on AAR standard

作　　者：陈晟[1] 

机构地区：[1]北京交通大学机械与电子控制工程学院,北京100044

出　　处：《现代制造工程》2014年第3期44-51,共8页Modern Manufacturing Engineering

基　　金：铁道部科技研究开发计划项目(2011J014-A)

摘　　要：介绍了美国AAR机车车辆手册的疲劳寿命计算方法,并以C70通用货车为例计算了其车体的疲劳寿命。计算载荷谱数据来源于AAR标准,采用载荷-应力转换系数将载荷谱转换为应力谱,计算方法采用基于名义应力法的Miner疲劳损伤累计法则。计算结果表明C70车体可以满足625万公里的安全运用要求。可作为AAR标准下铁路货车疲劳寿命计算的参考。Introduced the fatigue life calculation method of AAR standard, and calculated the fatigue life of C70 freight car body based on the AAR standard, using the nominal stress method and Miner fatigue summation principle. The data of load spectrum was derived from AAR standard, and a transformation constant was used to transform the load spectrum into a stress spectrum. The calculation result shows that the C70 freight car body can meet the requirement of safety use for 6250 thousand kilometers. Can be reference for fatigue life calculation of freight car due to its detailed introduction of the calculation process and matters need attention of the AAR standard.

关 键 词：疲劳寿命 C70货车 AAR标准 

分 类 号：TH16[机械工程—机械制造及自动化]