Analysis of mechanism of rock behaviors of classes I and II using elastoplastic cellular automata

作者：Pan Pengzhi^*; Zhou Hui; Feng Xiating

来源：Chinese Journal of Rock Mechanics and Engineering, 2006, 25(SUPPL. 2): 3823-3829.

• Complete stress-strain curve
• Elasto-brittle-plasticity
• Rock failure process
• Uniaxial compression

Elasto-brittle-plasticity theory and cellular automata are introduced to model the strain softening behavior of rocks, and the theoretical analysis on Classes I and II behaviors of rocks failure process under uniaxial compression is performed using elasto-plastic cellular automata. The linear combination of stress and strain is used as the feedback signal to control the loading process. Simulations on uniaxial compression failure process of inhomogeneous rocks are conducted by this method, considering different homogeneity indices and different loading parameters. The results indicate that the rocks behave Class I or II greatly depends on the homogeneity of rocks and loading control parameters. The higher the homogeneous indices of rocks are, the more easily the rocks behave Class I curve I. Rock specimens with the same mechanical properties are characterized as Class I or II, which are controlled by loading control parameters.

• 出版日期2006