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建立了用于确定焊接接头断裂韧度ＪⅠＣ统计分析函数的蒙特卡罗模拟方法。对３１６Ｌ奥氏体不锈钢焊接接头ＪⅠＣ的统计分布函数进行了统计模拟，结果表明，ＪⅠＣ的最佳拟合分布为威布尔分布。分析了样本数量对蒙特卡罗模拟结果的影响。
A Monte Carlo simulation method for determining the statistical analysis function of the fracture toughness J Ⅰ C of welded joints was established. The statistical distribution of the statistical distribution function of 316 Ⅰ austenitic stainless steel welded joint JⅠC is simulated. The results show that the best fitting distribution of JⅠC is Weibull distribution. The effect of the number of samples on the Monte Carlo simulation results is analyzed.