Abstract
Rockburst is modeled in this paper by the theory of elastoplastic damage at finite stains. Isotropic damage coupled with elastoplasticity is assumed and multiplicative kinematics in a purely mechanical setting is further applied. Merging the finite strain plasticity framework of Simo and the thermodynamics with internal variables of Lemaitre in definition of damage including processes, the Helmholtz free energy is additively decomposed to characterize the basic mechanism of elasto-plasticity and damage of brittle materials. The numerical simulations for granite burst are conducted by finite element technique.
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