A Coupled Elastic-Plastic Damage Model for Rock Material

作者:Chen Hongjie*; Xu Weiya; Wang Rubin; Wang Wei
来源:International Conference on Advanced Engineering Materials and Architecture Science (ICAEMAS 2014), 2014-01-04 to 2014-01-05.
DOI:10.4028/www.scientific.net/AMM.488-489.799

摘要

With complex mechanics character and under the action of compression and tension in tri-direction, rock will show coupled plastic-damage mechanism as its basic character. Phenomenological coupled elastic-plastic-damage constitutive model with internal variable is proposed based on thermal mechanics theory, elastic law and macro damage mechanics. Numerical experiments on this model and analyze the model character. The result shows that the coupling model could realize rock's softening behavior brought about by damage and strength enlargement caused by confining pressure increasing.

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