Energy variant of the uniaxial theory of creep and rupture strength

Energetic variant of the model of rheological deformation and destruction of metals under a joint action of static and cyclic loads

“…Using the first two basic experiments and the technique described in [2], we determine all the parameters of Eqs. Table 1 for and in Table 2 for plastic deformation.…”

“…The energetic [1,2] and adjoining thermodynanfic [3,4] approaches for description of inelastic rheological deformation and destruction of metals under conditions of unsteady loading yield good results, and the advisability of using these approaches in computational practice is unquestionable. The energetic [1,2] and adjoining thermodynanfic [3,4] approaches for description of inelastic rheological deformation and destruction of metals under conditions of unsteady loading yield good results, and the advisability of using these approaches in computational practice is unquestionable.…”

“…In the general case, we have 7 = ~(ep) and a = a(a0), and we can use a power-taw approximation for them [2]:…”

“…For a number of materials, in special cases, we have ~ = const and a = const [2]. The function S(a), which describes the plasticity strain, has the form…”

“…To obtain the destruction criterion, similarly to [2], we use thermodynamic considerations according to which the destruction of a material occurs when the density of internal energy reaches a critical value. To generalize model (2.1)-(2.5) to the case of a joint action of quasi-cyclic and cyclic loads, we introduce one more term related to irreversible processes under cyclic loading into the damage parameter.…”