In consideration of the fact that the Cam-Clay model is incapable of reflecting the deformation characteristics of initially anisotropic soil,and that the Ohta-Sekiguchi model can reflect the initial anisotropy of soil to some extent by adoption of a new stress ratio,the two models are modified by readjustment of the yielding locus and hardening axis in p-q plane.

The model can well simulate the effect of initial anisotropy and induced anisotropy on the stress-strain response of normally consolidated and over consolidated clays.

All the results show that the electric displacement produced in X by this sensor is about three times of that produced in Y,thus this sensor has more obvious orthotropy and can distinguish stress waves from the different directions.

Study on Structural Properties of Asphalt Pavement on Orthotropic Steel Bridge;

A 3D orthotropic model of hypoelasticity for concrete;

A general solution to orthotropic material plane problems;

The problems of annular concrete plates of orthogonal anisotropy and nonlinear v ariable thickness are disscussed.

Upon the theory of generalized characteristic curves, the non-dimensional kinematic equations for the motion of an orthogonal anisotropy circular cylindrical shell under axial impact are derived including the shear deformation and rotary inertia effect.