the onset strain localization condition 应变局部化萌生条件
The strain localization on a shear band induced by post-peak softening is one of the most important deformations and strength characteristics of sand.
这种由软化特性引起的应变局部化剪切带是砂土材料非常重要的变形和强度特性之一。
Under plane strain condition, the strain localization starts around the peak stress state; and a V-shaped shear band is formed at the residual stress state.
在平面应变压缩条件下，砂土在峰值应力状态附近出现应变局部化现象，在残余状态最终形成一条V型剪切带。
The location of shear strain rate localization coincides in position with the location of volumetric strain rate, which is the actual failure zone of rock.
剪切应变率（或应变）局部化区域与体积应变率（或应变）的位置重合，局部化区域就是岩样最终的破坏位置。
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