void get_tenseur_rigidite(double E1, double E2, double E3, double G1, double G2, double G3, double nu1, double nu2, double nu3, OT_TENSEUR &rigE)
void get_VoigtReuss_poly(double c11, double c12, double c13, double c23, double c22, double c33, double c44, double c55, double c66, double &troisKvoigt, double &deuxGvoigt, double &Evoigt, double &nuvoigt, double &troisKreuss, double &deuxGreuss, double &Ereuss, double &nureuss)
void get_propriete_rigidite(OT_TENSEUR rigE, double &E1, double &E2, double &E3, double &G1, double &G2, double &G3, double &nu1, double &nu2, double &nu3)