疲劳裂纹的工程预测方法  

ENGINEERING ASSESSMENT METHOD OF FATIGUE CRACK GROWTH

作　　者：李思源[1] 陈亚茹[1] 

机构地区：[1]兰州石油机械研究所,兰州730050

出　　处：《机械强度》2000年第2期142-145,148,共5页Journal of Mechanical Strength

摘　　要：应用腐蚀疲劳裂纹试验数据验证了文献 [1]中疲劳裂纹扩展尺寸的通用计算公式 ;建立了用三组实测数据预测疲劳裂纹扩展尺寸的实用方法 ;并将通用计算公式推广用于预测工程构件中疲劳裂纹形状的变化 。General calculation formulas of fatigue crack growth in article [1] were verified by the testing data of corrosion fatigue crack growth. Applicable methods to assess the fatigue crack growth were established using three sets of testing data. The general calculation formulas were also extended to assess the shape development of fatigue cracks in structure units and components,the general calculation formulas used for calculating shape development of fatigue crack have been established.

关 键 词：金属构件 疲劳裂纹 扩展尺寸 工程预测 

分 类 号：O346.2[理学—固体力学] TH114[理学—力学]