Abstract
The paper shows the features of the deformation of materials with cubic, transversely isotropic and orthotropic symmetry of properties. The formation of the “safe” stress state which ensures the absence of plastic deformations in anisotropic materials is determined by the values of bulk compression modules in the directions of each axis of the calculated coordinate system. The study of deformation processes in materials characterized by cubic symmetry of properties showed that in some directions the deformation is determined by the maximum values of the longitudinal characteristics and the minimum values of bulk compression modules. The minimum values of the bulk compression modules lead to decrease in stress in the selected direction under the conditions of volumetric deformation, or to earlier plastic deformation in comparison with other directions. By the example of solving the model problem, the features of the deformation processes in materials with cubic, transversely isotropic, and orthotropic symmetry of properties and also the formation of the “safe” stress state in them are shown. Anisotropic materials are classified according to the features of the formation of the “safe” stress state in them.
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