A Statistical Constitutive Model of Continuous Damage for Fragile Solid Material

Abstract:

Based on the probability distribution theory of rock micro-unit strength and taking the Mohr-Coulomb damage criterion as the distribution variable, the theoretical equations for the evolution of damage variables and the statistical constitutive model of rock damage in triaxis test were established. The arbitrary triaxis experimental data w ere used to calculate the parameters in the model by using curve fitting method and extreme value method. The calculated results of the model agree well with the experimental data. This constructive model can reflect effectively the deformation characteristics of rocks under loads and the constructive relation between elastic strain and stress of rock damage.

• Periodical: Advanced Materials Research (Volumes 557-559)
• Pages: 2217-2220
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.557-559.2217
• Online since: July 2012
• Authors: Hua Lin Liao*
• Keywords: Constitutive Model, Material Damage, Triaxis Test, Weibull Distribution

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