Isotropic material: spline approximation


This model defines a nonlinear behavior law D(E) from pairs of experimental D, E values for an isotropic material.

Mathematical model

The model is constructed in the following manner:

  • entry of experimental D, E values
  • interpolation by a spline function

The shape of the D(E) curve is given in the figure below.

Anisotropic material

This model is not available for an anisotropic material.