应力场强法在多轴疲劳寿命估算中的应用  

APPLICATION OF STRESS FIELD INTENSITY FOR THE PREDICTION OF MULTIAXIAL FATIGUE

作　　者：李玉春[1] 姚卫星[2] 温卫东[1] 

机构地区：[1]南京航空航天大学动力工程系,南京210016 [2]南京航空航天大学飞行器系,南京210016

出　　处：《机械强度》2002年第2期258-261,共4页Journal of Mechanical Strength

基　　金：国家自然科学基金资助项目 (595750 2 7)

摘　　要：将预测疲劳寿命的方法———应力场强法理论初步应用到单轴加载和多轴加载下的疲劳寿命估算。同时 ,对于单轴加载和多轴比例加载给出预测算例 ,并与其试验结果进行对比 。A new method for fatigue life prediction--Stress Field Intensity approach(SFI), which is developed in recent years, is applied to predict uni axial fatigue life and multi axial fatigue life. The examples of the prediction of uniaxial fatigue and multiaxial fatigue are discussed, and the predicted results are compared with the experimental results. The result shows that stress field intensity approach is a good method to predict the fatigue life for multiaxial fatigue.

关 键 词：应力场强法 疲劳寿命 多轴疲劳 

分 类 号：O346.2[理学—固体力学]