| DCB试样应力强度因子的一个改进公式 |
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| 引用本文： | 孟庆春,张行.DCB试样应力强度因子的一个改进公式[J].北京航空航天大学学报,1996,22(6):717-721. |
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| 作者姓名： | 孟庆春 张行 |
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| 作者单位： | [1]北京航空航天大学 [2]飞行器设计与应用力学系 |
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| 摘 要： | 利用能量释放率方法与计及剪切变形的工程梁理论导出了一个计及根部变形效庆的ＤＣＢ试样应力强度因子的便于应用的改进型公式，并对原有不计根部变形效应的公式精度进行了评价。
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| 关 键 词： | 裂纹扩展力 梁 应力强度因子 结构材料 |
IMPROVED FORMULA OF STRESS INTENSITY FACTOR ABOUT DCB SPECIMENS |
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| Meng Qingchun\ \ Zhang Xing.IMPROVED FORMULA OF STRESS INTENSITY FACTOR ABOUT DCB SPECIMENS[J].Journal of Beijing University of Aeronautics and Astronautics,1996,22(6):717-721. |
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| Authors: | Meng Qingchun\ \ Zhang Xing |
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| Abstract: | An improved formula of stress intensity factors of DCB specimens is derived to consider root effect of deformation provided by the uncracked portion of the test piece by means of the modified beam theory with consideration of shear deformation and energy release rate method.Furthermore,a review about the relevant conventional formula is carried out. |
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| Keywords: | crack extension force beams(supports) stress intensity factors construction materials DCB specimen root effect energy release rate |
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