摘要
给出了沉积岩的一种各向异性模型。用一个各向异性参数描述这类材料的固有各向异性,各向异性参数和单轴抗压强度是一个分布函数,其分布用一个微结构张量和加载方向表示。建立了一个描述各向异性沉积岩变形过程的全塑性模型。用该模型对一些三轴试验进行了模拟,结果表明该模型能有效地描述沉积岩的固有各向异性。
An anisotropic model of sedimentary rocks is presented.The inherent anisotropy of this kind of material is described with an anisotropy parameter.A microstructure tensor and loading orientation are incorporated in the distribution functions of anisotropy parameter and uniaxial compressive strength.A complete plasticity model describing the deformation process in anisotropic sedimentary rocks is given.Several triaxial tests are simulated with the anisotropic model.The results show that the inherent anisotropy in sedimentary rocks can be efficiently described with the model.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2002年第1期47-50,共4页
Rock and Soil Mechanics
关键词
沉积岩
各向异性模型
微结构张量
anisotropy
sedimentary rocks
microstructure tensor
