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
潘丽华1, 杨瑞成2
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作者单位: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
中文关键字:随机扫描振动; 应力函数; 应力场强度; 疲劳寿命; 数学模型
英文关键字: random scan vibrate; stress function; stress field intensity; fatigue life; math model
中文摘要: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。
英文摘要: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.