李波扬. 应用于复合型脆断的综合断裂理论[J]. 武汉大学学报 ( 信息科学版), 1991, 16(1): 62-67.
引用本文: 李波扬. 应用于复合型脆断的综合断裂理论[J]. 武汉大学学报 ( 信息科学版), 1991, 16(1): 62-67.
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Li Boyang. A Synthetic Fracture Criteria Applied to the Mixed Mode Crack Problems[J]. Geomatics and Information Science of Wuhan University, 1991, 16(1): 62-67.
Citation: Li Boyang. A Synthetic Fracture Criteria Applied to the Mixed Mode Crack Problems[J]. Geomatics and Information Science of Wuhan University, 1991, 16(1): 62-67.
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应用于复合型脆断的综合断裂理论

A Synthetic Fracture Criteria Applied to the Mixed Mode Crack Problems

    摘要
  • 摘要: 现有的复合型裂纹扩展断裂准则大多只考虑了裂纹尖端附近某一点处的某个力学参量。本文同时考虑了正应力、剪应力及塑性区的影响,并在此基础上提出了一个新的复合型断裂理论——综合断裂理论。同近年来的实验数据进行比较,得到了与实验十分接近的结果,并且还解释了其它理论所不能解释的实验现象。

     

    Abstract: The synthetic fracture criteria is based on the normal-stress,shearing-stress and the impact of plastic area.The new fracture criteria is proposed here to replace the one where only the singular term is considered.The conditions of application of the synthetic fracture criteria to the mixed mode crack problems have been given by the analysis and comparison between the theoretical solutions and experiment results.The result that is used in conjunction with the synthetic fracture criteria for problem of I-I mixed mode state is satisfying.

     

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