张慧梅, 谢祥妙, 张蒙军, 杨更社. 真三轴应力状态下岩石损伤本构模型[J]. 力学与实践, 2015, 37(1): 75-78. DOI: 10.6052/1000-0879-13-517
引用本文: 张慧梅, 谢祥妙, 张蒙军, 杨更社. 真三轴应力状态下岩石损伤本构模型[J]. 力学与实践, 2015, 37(1): 75-78. DOI: 10.6052/1000-0879-13-517
ZHANG Huimei, XIE Xiangmiao, ZHANG Mengjun, YANG Gengshe. DAMAGE CONSTITUTIVE MODEL OF ROCK UNDER THE TRUE TRIAXIAL CONFINEMENT STATE[J]. MECHANICS IN ENGINEERING, 2015, 37(1): 75-78. DOI: 10.6052/1000-0879-13-517
Citation: ZHANG Huimei, XIE Xiangmiao, ZHANG Mengjun, YANG Gengshe. DAMAGE CONSTITUTIVE MODEL OF ROCK UNDER THE TRUE TRIAXIAL CONFINEMENT STATE[J]. MECHANICS IN ENGINEERING, 2015, 37(1): 75-78. DOI: 10.6052/1000-0879-13-517

真三轴应力状态下岩石损伤本构模型

DAMAGE CONSTITUTIVE MODEL OF ROCK UNDER THE TRUE TRIAXIAL CONFINEMENT STATE

  • 摘要: 从岩石微元破坏服从Weibull 随机分布的特点出发,建立了真三轴应力状态下岩石损伤软化统计本构关系;根据应力应变关系的几何条件,建立了本构模型参数与岩石变形过程中应力应变曲线特征参量的理论关系,从而增强了模型的适应性;最后通过试验实测数据验证了模型的合理性.

     

    Abstract: With the assumption that the rock micro-unit failure obeys the Weibull random distribution, the damage softening statistical constitutive relations are established under the true triaxial confinement state. Then, according to the geometrical conditions of the stress-strain relationship, the theoretical relationship between the constitutive model parameters and the stress-strain curve characteristic parameters during the process of rock softening and deforming is established, which enhances the adaptability of the model. Finally, the rationality of the model is verified by the measured data.

     

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