JWAJournal of World Architecture2208-34802208-3499Bio-Byword Scientific Publishing Pty. Ltd.10.26689/jwa.v9i6.13338ArticleDeformation and Failure Characteristics and Damage Characterization of Sandstone under Uniaxial Loadinghttps://artdesignp.com/journal/JWA/9/6/10.26689/jwa.v9i6.13338ZhangJin,XuQinming,YuMengyao,WangMengqi2025962025-12-31To investigate the relationship between deformation, failure, and damage during the rock loading process, uniaxial compression tests were conducted on sandstone specimens. The characteristics of volumetric deformation and energy dissipation throughout the compression failure process were studied. Damage in the specimens was characterized using three physical parameters: crack volumetric strain, axial stiffness, and dissipated energy density. The results indicate that the loading process can be divided into five stages based on the crack volumetric strain. The instantaneous Poisson’s ratio showed an increasing trend throughout all stages except the crack closure stage, with accelerated increase observed upon entering the unstable crack growth stage. Specimen dilatancy occurred during the stable crack growth stage. Radial cracks in their initial formation phase had minimal impact on the specimen’s axial stiffness; a rapid decrease in axial stiffness only began during the unstable crack growth stage. Using axial stiffness and crack volumetric strain fails to adequately define damage during the crack closure and elastic stages. In contrast, characterizing specimen damage using dissipated energy density effectively reflects the damage evolution throughout the entire loading and failure process.

Niu S, Jing H, Yang X, et al., 2012, Experimental Study of Strength Degradation Law of Surrounding Rock in Fractured Zone of Deep Roadway. Chinese Journal of Rock Mechanics and Engineering, 31(8): 1587–1596.

Kim J, Lee K, Cho W, et al., 2015, A Comparative Evaluation of Stress-Strain and Acoustic Emission Methods for Quantitative Damage Assessments of Brittle Rock. Rock Mechanics and Rock Engineering, 48(2): 495–508.

Xie H, Dong Y, 1997, Research on Plastic Modulus Method for Classical Damage Mechanical Definition. Mechanical and Practice, 19(2): 1–5.

Wang C, Yang X, Guo W, et al., 2015, Statistical Damage Constitutive Model for Coal and Rock Uniaxial Loading. Coal Mine Safety, 46(11): 10–13.

Mo Y, Zeng Y, Li J, et al., 2013, Multiparameter Constitutive Model of Rock Damage under Uniaxial Loading. Chinese Journal of Underground Space and Engineering, 9(3): 477–481.

Guo Z, Liu X, Liu B, et al., 2010, Experimental Study of Deformation Characteristics of Rock Damage based Plastic Volume Strain. Journal of Experimental Mechanics, 25(3): 293–298.

Zhang Z, Zhu J, Wang B, et al., 2018, The Damage and Shear Dilation Property Evolution based on Energy Dissipation Mechanism of Gneissic Granite. Chinese Journal of Rock Mechanics and Engineering, 37(s1): 3441–3448.

Jin J, Zhong H, Wu Y, et al., 2013, Method Selection for Defining Damage Variable of Rock Subjected to Static Loadings and Cyclic Impacts. Nonferrous Metals Science and Engineering, 4(4): 85–90.

Xiao J, Ding D, Jiang F, et al., 2010, Fatigue Damage Variable and Evolution of Rock Subjected to Cyclic Loading. International Journal of Rock Mechanics and Mining Sciences, 2010(47): 461–468.

Li S, Xu X, Liu Z, et al., 2014, Electrical Resistivity and Acoustic Emission Response Characteristics and Damage Evolution of Sandstone during Whole Process of Uniaxial Compression. Chinese Journal of Rock Mechanics and Engineering, 33(1): 14–23.

Li J, Zhou K, Zhang Y, et al., 2012, Experimental Study of Rock Porous Structure Damage Characteristics under Condition of Freezing-Thawing Cycles based on Nuclear Magnetic Resonance Technique. Chinese Journal of Rock Mechanics and Engineering, 31(6): 1208–1214.

Jin P, Wang E, Liu X, et al., 2013, Damage Evolution Law of Coal-Rock under Uniaxial Compression based on the Electromagnetic Radiation Characteristics. International Journal of Mining Science and Technology, 23(2): 213–219.

Zhang Q, Yang G, Ren J, 2003, New Study of Damage Variable and Constitutive Equation of Rock. Chinese Journal of Rock Mechanics and Engineering, 22(1): 30–34.