axial principal stress

基本解释

The results show that: with the initial principal stress direction angle increases, the axial residual deformation from the compression state gradually transits to the elongation.
结果表明：随着初始主应力方向角的增大，轴向残余变形由压缩状态的正值逐渐过渡到伸长状态的负值。
And that the angle between extending crack and principal axial stress decreases gradually is caused by the variation of tensile and shear stress focuses in the course of brittle formation.
而扩展裂纹与主应力夹角的逐渐减小则是裂纹附近张应力和剪应力集中点的变化所致。
The effect of rotation of principal stress axial directions and large shear displacement of sand in the earthquake induced liquefaction are taken into account at the same time in the model.
由于多重机理的特性，该模型能够模拟复杂荷载作用下主应力轴偏转的影响。