Open AccessOn inelasticity of damaged quasi-rate-independent orthotropic materials
Author(s) -
Milan V. Mićunović,
Ljudmila Kudrjavceva
Publication year - 2022
Publication title -
theoretical and applied mechanics/theoretical and applied mechanics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.279
H-Index - 6
eISSN - 2406-0925
pISSN - 1450-5584
DOI - 10.2298/tam211007001m
Subject(s) - orthotropic material , viscoplasticity , materials science , stiffness , distribution (mathematics) , tensor (intrinsic definition) , stiffening , symmetry (geometry) , field (mathematics) , mechanics , statistical physics , physics , mathematics , mathematical analysis , composite material , constitutive equation , thermodynamics , finite element method , geometry , pure mathematics
The paper deals with a body having a random 3D-distribution of two-phase inclusions: spheroidal mutually parallel voids as well as differently oriented reinforcing parallel stiff spheroidal short fibers. By the effective field approach the effective stiffness fourth-order tensor is formulated and found numerically. Simultaneous and sequential embeddings of inclusions are compared. Damage evolution is described by modified Vakulenko?s approach to endochronic thermodynamics. A brief account of the problem of effective elastic symmetry is given. The results of the theory are applied to the damage-elasto-viscoplastic strain of reactor stainless steel AISI 316H.