论文部分内容阅读
应用细观力学方法研究晶须增强铝合金中短裂纹的疲劳扩展速率，为预报短裂纹寿命提供依据，通过晶须增强铝合金中疲劳短裂纹扩展过程的分析，利用裂纹扩展的能量释放率给出短裂纹的疲劳扩展速率方程。数值计算结果与实验结果相吻合，裂纹扩展速率具有波浪式向前发展的特点。
The meso-mechanical method was used to study the fatigue crack growth rate of short cracks in whisker reinforced aluminum alloy, which provided the basis for predicting the short-crack life. Through the analysis of fatigue crack growth process in whisker reinforced aluminum alloy, the energy release rate Short fatigue crack growth rate equation. The numerical results are consistent with the experimental results, and the crack growth rate has the characteristics of wave forward development.