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本文较详细地介绍了以BCS模型和以J积分控制裂纹增长条件为基础的双判据法基本理论。通过用双判据法对不同裂纹形态试件承载能力的估计和实验结果及工程方法分析结果相比较,得到了一些有益的结论。
This paper introduces in detail the basic theory of double criterions based on the BCS model and the J-integral control of crack growth conditions. By using the double criterion method to compare the bearing capacity of specimens with different crack shapes with the experimental results and engineering method analysis results, some useful conclusions are obtained.