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本文在对英国CEGB R/H/R6-R ev.3及美国EPRI J积分工程方法的评价与分析基础上,提出了一条新的参考应力J积分失效评定曲线。所进行的几种材料弹塑性断裂实验表明,本文建议的失效评定曲线具有合理的保守性。
Based on the evaluation and analysis of the engineering methods of CEGB R / H / R6-R ev.3 in the United Kingdom and EPRI J in the United States, this paper presents a new curve of J integral failure assessment of reference stress. The experiments on the elastic-plastic fracture of several materials show that the proposed failure assessment curve is reasonable conservative.