Graphoanalytical method for determining plasticity properties for structural materials

The presented article sets the task of assessing and determining the plasticity of materials for the manufacture of elements of SOFC structures, manufactured on the basis of bodies in a complex stress state. To obtain estimated values of the plasticity of materials, a linear call of hardening of a deformable body is considered. As a result of the hypothesis about the strengthening of materials due to the reduction of pores, it was established that the plasticity coefficient of elastic-plastic bodies depends on its elastic parameters, porosity and deformation angles and does not depend on the factor of brittle fracture under load. A graphic-analytical method has been proposed for determining the plasticity coefficient of materials and therefore it uses all parameters explicitly to evaluate the properties of all groups of materials, including materials for SOFC.