| 从EPRI工程计算方法看Burdekin COD设计曲线 |
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| 引用本文： | 董亚民.从EPRI工程计算方法看Burdekin COD设计曲线[J].清华大学学报(自然科学版),1985(3). |
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| 作者姓名： | 董亚民 |
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| 作者单位： | 工程力学系 |
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| 摘 要： | 分析了 Ｂｕｒｄｅｋｉｎ ＣＯＤ设计曲线的不足点，建立了由 ＥＰＲＩ工程计算方法求原裂纹尖端张开位移的转换公式，藉以考查Ｂｕｒｄｅｋｉｎ设计曲线的保守程度。文中的实例指出：Ｂｕｒｄｅｋｉｎ设计曲线只适用于以脆断为主要破坏形式的各种构件的预测，而对于以延性撕裂为主要破坏形式的构件，设计曲线的预测偏于保守，在安全评定的应用上受到限制。
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| 关 键 词： | HRR奇异性 J积分 阻力曲线 启裂 稳定扩展 J控制 |
The Inspection of Burdekin COD Design Curve from EPRI's Engineering Computation of Method |
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| Dong Yamin.The Inspection of Burdekin COD Design Curve from EPRI's Engineering Computation of Method[J].Journal of Tsinghua University(Science and Technology),1985(3). |
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| Authors: | Dong Yamin |
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| Institution: | Department of Engineering Mechanics |
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| Abstract: | In this paper, the shortcomings in Burdekin COD design curve are analysed and the formula of transformation derived from EPRI's engineering computation method for obtaining the original crack tip opening displacement is established. A practical example for examining whether the Burdekin COD design curve is applicable was calculated and it is shown that the prediction of Burdekin design curve for failure assessment Of tough material is rather conservative. Therefore, in safety assessment of structure contained defects, the application of Burdekin curve will suffer restriction. |
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| Keywords: | HRR Singularity J-integral Resistance curve crack initiation stable crack growth J-control |
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