Higher DA leads to higher value of maximum shear strain increment within the specimen. Therefore, more apparent precursor to failure can be observed at higher DA.
当扩容角较高时，应力峰值时试样内部的最大剪切应变增量较高，因而试样破坏的前兆比较明显。
For dilative material in shear, the increment of local volumetric strain in shear band and the normal deformation of shear band due to shear dilatancy were derived.
在剪胀条件下，分析了剪切带内部的局部体积应变增量及由于剪胀而引起的剪切带的法向变形。
The study demonstrates that the section strain along the width is nonlinearly distributed and that the effect of the shear lag is not constant and changes with the increment of the load.
试验表明，截面应变沿宽度方向呈非线性分布，剪力滞效应随荷载的增加而变化，并不是常量。
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