initial tangent modulus

Because the initial tangent modulus decreases gradually with the increase of compression stress and water content and reflects the structural damage increase of loess, this parameter can be used to define the damage variables by the composite theory.

基于初始切线模量定义的损伤比，能够反映球应力增大和进水增湿作用引起的结构破损变化。

Based on the laboratory swelling experiments results, the additional compression modulus 、 the initial tangent modulus in 1D 、 deformation modulus and volume deformation modulus in 3D of expansive soils in Ning-Ming are formulated.

在此试验的基础上，推导出一维关系下宁明膨胀土的切线模量和初始割线模量和三维关系下此膨胀土的变形模量和体积模量。

It is also found that in stabilization by exert confining stress the linear phrase will be shorten in the figure of the static triaxial test of specimen, while the initial tangent modulus will be augment.

经围压稳定后的试件静三轴试验曲线上的线性阶段明显缩短，而初始切线模量增大。