以实验事实说明了RKR模型应用于硅钢所遇到的严重困难。引入了Weibull统计分布来描述硅钢解理断裂应力的体积效应。运用HRR理论和Rice-Johnson关于钝化区的应力分析,结合Weibull统计模型,导出了硅钢解理断裂韧性K_(Ⅰc)与温度的依赖关系,与实验结果符合得较好。
Results of experiments indicated that the analysis of the cleavage fracture of silicon steel seems to be hard to solve by RKR model. The Weibull statistical theory was introduced to describe the volume effect of the cleavage fracture stress determined by smooth tensile and notched bend specimens. The temperature dependence of the cleavage fracture toughness and its scatter band of silicon steel is formulated by applying the HRR theory and the Rice-Johnson's stress analysis for the blunted crack tip zone, as well as by combining with the Weibull's statistical model. The experimental data are in agreement with the prediction.
参考文献
| [1] | |
| [2] | |
| [3] | |
| [4] | |
| [5] | |
| [6] | |
| [7] |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%