特种炸弹拖车零件的疲劳寿命估算  

FATIGUE LIFE ESTIMATION FOR BOMB TRAILER VEHICLE COMPONENTS

作　　者：刘恒春[1] 胡瑜[1] 朱夕平 杨冶炼 

机构地区：[1]87316部队

出　　处：《兵工学报》1996年第4期325-329,共5页Acta Armamentarii

摘　　要：首先建立特种炸弹拖车的动力学模型，导出拖车零件对路面激励的频响函数；再根据线性系统和随机过程理论，确定零件动态应力幅值的概率密度函数；最后采用迈纳（Miner）线性累积损伤理论估算零件的疲劳寿命，为拖车的疲劳设计提供参考数据。本文的方法也适用于火炮及其它拖车的疲劳寿命估算。Dynamic model for trailer vehicles is built up.The frequency response functions of its components to random excitation from the road are formularized.Amplitude probability density functions of dynamic stress on the components are then determined based on theories of linear systems and stochastic processes.Fatigue life of the components are finally estimated with the Miner theory of linear accmulated failure to provide reference data for the fatigue design of such vehicles.The presented method is applicable to artillery trailers and other vehicles.

关 键 词：炸弹 拖车零件 疲劳寿命 动力学模型 

分 类 号：TJ414[兵器科学与技术—火炮、自动武器与弹药工程]