随机扫描振动中结构件疲劳寿命预测的数学模型  

Math Model of Fatigue Life of Predicating Materials During Random Scan Vibrate

作　　者：潘丽华[1] 杨瑞成[2] 

机构地区：[1]兰州交通大学机电工程学院,甘肃兰州730070 [2]兰州理工大学材料科学与工程学院,甘肃兰州730050

出　　处：《热加工工艺》2011年第20期71-72,共2页Hot Working Technology

摘　　要：应用应力场强度理论,推导出随机扫描振动的应力函数和应力场强度,建立在500～2000 Hz频率段疲劳断裂寿命的经验计算模型。The stress function and stress field intensity were obtained by theory of stress field intensity for the structure in the random scan vibration,and the formula predication model of fatigue life at the frequency of 500～2000 Hz was developed.

关 键 词：随机扫描振动 应力函数 应力场强度 疲劳寿命 数学模型 

分 类 号：TG113.255[金属学及工艺—物理冶金]