Statistical Damage Model of Altered Granite under Dry-Wet Cycles

Symmetry - Tập 11 Số 1 - Trang 41
Xuxin Chen1,2, Ping He1,2, Zhe Qin3, Jianye Li1,2, Yanping Gong1,2
1School of Civil and Architectural Engineering, Beijing Jiaotong University, Beijing 100044, China
2Tunneling and Underground Engineering Research Center of Ministry of Education, Beijing 100044, China
3School of Civil Engineering and Architecture, Shandong University of Science and Technology, Qingdao 266590, China

Tóm tắt

This paper presents a new statistical damage constitutive model using symmetric normal distribution. The broken rock microbody obeyed symmetric normal distribution and the equivalent strain principle in damage mechanics. The uniaxial compression tests of samples subjected to dry-wet cycles were performed. The damage model was established using the equivalent strain principle and symmetric normal distribution. The damage variable was defined by the elastic modulus under various dry-wet cycles. Parameters of the damage constitutive model were identified using MATLAB software, and the proposed model is verified to be in good agreement with uniaxial compression test results. Fracturing of the rock microbody is well described by symmetric normal distribution, and the proposed statistical damage constitutive model has good adaptability to the uniaxial compression stress-strain curve.

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Symmetry

Tập 11 Số 1

41

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