Dr. Thai Minh QuanUniversity of transport and Communication, Hanoi, Vietnam
We develop in this study a visco-damage model for concrete materials based on the concept of pseudo-strains introduced by Schapery coupled with the damage model of Mazars. The pseudo-strains approach allows for reformulation of the initial viscoelastic problem as an equivalent elastic one by using a simple correspondence principle. The viscoelastic model results from a homogenization procedure in which the Mori–Tanaka scheme is applied in the Laplace–Carson space for estimating the effective linear viscoelastic bulk and shear moduli of the material. A composite made of a linear viscoelastic matrix described by a generalized Maxwell model and containing distributed spherical elastic inclusions and pores is adopted as a simplified representation of the material under consideration.