Based the numerical simulation for sphere tank with defects, fracture safety assessment and stress strength verification are done under the cases of working pressure and over pressure.
在数值模拟计算含缺陷球罐应力场的基础上，对含缺陷球罐在工作压力和超压两种工况下进行了断裂安全评定和强度校核。
The precise calculation of J integration is fundamental to safety assessment of structure containing defects.
J积分的精确计算是含缺陷结构安全评定的基础。
Safety assessment method using BP neural network can overcome the defects of traditional safety assessment methods and enhance its precision and reliability.
利用人工神经元网络进行安全评价可以克服传统的安全评价方法的缺点，提高安全评价方法的精确度和可靠性。
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