Abstract: For revealing the damage constitutive relation of saturated fine-grained sandstone under the effect of different pore water pressure, based on damage mechanics and probability statistics method, through the principle of effective stress in pore water pressure, the MC strength crite-rion assumes that micro strength obey the lognormal distribution, based on statistical damage constitutive model theory of saturated fine-grained sandstone. By fitting and modifying the relationship between the statistical damage model parameters F0 and S0 and pore water pressure, a constitutive model that can more objectively reflect the damage state of saturated fine-grained sandstone was constructed. Theory and experiment comparison study shows that the established model has certain reliability and on this basis, study the F0, S0 statistical damage model parameters for the influence of the physical characteristics of saturated fine-grained sandstone, discusses the saturated fine-grained sandstone under different confining pressure and different damage evolution law of pore water pressure, for practical engineering case, the saturated fine-grained sandstone damage change provides a reference basis.
王林峰,曾韬睿,翁其能. 基于统计损伤理论的饱和细粒砂岩本构模型研究[J]. 材料导报, 2019, 33(22): 3727-3731.
WANG Linfeng, ZENG Taorui, WENG Qineng. Study on the Constitutive Model of Saturated Fine-Grained Sandstone Based on Statistical Damage Theory. Materials Reports, 2019, 33(22): 3727-3731.
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2019, Vol. 33 
