岩土破损力学:理想脆弹塑性模型 English Version
Breakage mechanics for geological materials:an ideal brittle-elasto-plastic model
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摘要: 岩土破损力学把结构性岩土材料抽象成由胶结强的胶结块和无胶结的软弱带组成的二元结构体 ,变形过程中胶结块逐步破损并向软弱带转化。从不均质材料的均匀化理论出发推导了破损参数的演化规律 ,并通过一种理想脆弹塑性模型合理地描述了岩土材料在低围压下软化和高围压下硬化的典型力学行为Abstract: Breakage mechanics conceptualizes the geological materials as binary structural bodies consisting of bonded blocks and weakened bands. During their deformation the blocks break down gradually and turn to be weakened bands. In this paper, starting from the homogenization theory of heterogeneous materials, the evolution law of breakage parameter has been derived, and through an ideal brittle elasto plastic model the typical behaviors of geological materials of softening under low confining stress and hardening under high confining stress have been successful simulated.
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