DEFORMATION THEORY OF PLASTICITY OF ANISOTROPIC METAL SHEETS WITH APPLICATION TO STABILITY PROBLEMS. STRUCTURAL ANISOTROPY CASE

We propose governing relations of the deformation (finite) type for the description of the simple active loadings of metal sheets having structural (initial) anisotropy. We describe the basic experiments and the model identification procedure and present the differential form of the governing relations. We examine the case of structural/deformation anisotropy in the first approximation; the governing relations are constructed on the basis of the proposal relating to the superposing of the structural anisotropy and the deformation anisotropy