Plastic deformation and failure in granular media
Plastic deformation and failure in granular media
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DOI：
10.1680/geot.1977.27.1.53
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发表时间：
1977-03
期刊：
影响因子：
5.8
通讯作者：
J. Arthur;T. Dunstan;Q. A. J. L. Al-Ani;A. Assadi
中科院分区：
文献类型：
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作者：
J. Arthur;T. Dunstan;Q. A. J. L. Al-Ani;A. Assadi
破坏前的塑性变形被建模为一个过程控制的同时平面应变硬化和平面应变软化与非延伸方向和最大应力应变平面。应变硬化率和软化率的相等定义了失效。应力和应变增量的主轴可以重合，也可以不重合，这取决于变形土单元上的约束。该模型定义了薄破裂层的方向，可能会形成在失败，并建议硬化规律和屈服面的可能形式。从七个不同的剪切设备和一系列的平面应变模型试验与模型一致的数据。剪切装置包括具有完全刚性边界、刚性边界和柔性边界的混合以及完全柔性边界的那些。覆盖了中间主应力的全部变化。La deformation plastique avant rupture est definie comme un processus regi delivery par un durcissement de.
Pre-failure plastic deformation is modelled as a process controlled by simultaneous plane strain hardening and plane strain softening associated with no-extension directions and maximum stress obliquity planes. The equality of rates of strain hardening and softening defines failure. Principal axes of stress and strain increment may or may not coincide depending on the constraints on a deforming soil element. The model defines the orientations of thin rupture layers which may form at failure and suggests the possible form of a hardening law and yield surface. Data in agreement with the model are presented from seven different shear apparatuses and a range of plane strain model tests. The shear apparatuses include those with entirely rigid boundaries, a mixture of rigid and flexible boundaries, and entirely flexible boundaries. The full variation of the intermediate principal stress is covered. La deformation plastique avant rupture est definie comme un processus regi simultanement par un durcissement de de...