On the parameters of scattered destruction of structural materials

The results of applying various mechanical characteristics of structural materials as scalar parameters of damageability are described. The concepts of the first and second kinds of Young's modulus, bulk modulus, and Poisson's ratio are used. Hypotheses of the equivalence of strains and specific energies of strain for the undamaged and damaged states of initially isotropic metallic materials are accepted. The patterns of accumulation of dispersed damage for 12Х18Н10Т steel and D16Т aluminum alloy under conditions of active elastic-plastic strain are obtained. It is established that the use of two phenomenological parameters in damageability based on the hypothesis of equivalence of specific energies of strain provides a significant refinement in determining the stress-strain state of highly loaded elements of structures of various purposes.