On the energy dissipation in confined concrete subjected to shear cyclic loading

The establishment of a simple engineering rule for predicting the fatigue failure concrete has been pursued over past decades. An energetic approach to matter seems be an attractive option that many researchers have embraced. In present work, authors attempt contribute such rule. particular, energy dissipation confined subjected shear cyclic loading is studied and quantified. For this purpose, microplane model recently introduced by authors, referred as MS1, used. It aims capture fundamental inelastic mechanisms driving tri-axial stress redistribution within material zone during damage process in concrete. To end, evolution linked measure cumulative strain at level, reflecting accumulation due internal shear/sliding between aggregates subcritical pulsating load levels. isolate dissipative mechanism mentioned above, test configurations with dominant seem more appropriate. punch-through (PTST) FE used induce shear-dominated stresses strains along ligament specimen. Numerical studies are first presented evaluate behavior elemental interface level. MS1 model, which capable reproducing under monotonic, cyclic, consistent set parameters. Quantification each performed integrated via well-established homogenization scheme macroscopic dissipation. Later, analysis PTST two different amplitudes.