A semi-micromechanical multilaminate model is introduced here to predict the mechanical behavior of soils.
This model is like a bridge between micro and macro scale upon the satisfaction of minimum potential energy level
during any applied stress/strain increments. The concept of this model is based on a certain number of sampling planes
which constitute the elastic-plastic behavior of the soil. The soil behavior presents as the summation of behavior on
these planes. A simple unconventional constitutive equations are used in each of the planes to describe the behavior
of these planes separately. An unconventional plasticity can predict the soil behavior as a smooth curve with
considering plastic deformation due to change of stress state inside the yield surface. The model is capable of
predicting softening behavior of the soil in a reasonable manner due to using unconventional plasticity. The influences
of induced anisotropy are included in a rational way without any additional hypotheses owing to in-nature properties
of the multilaminate framework. Results of this model are compared with test data and reasonable agreement is found.