ANALYTICAL MODEL FOR FRACTURE BEHAVIORS OF PSEUDO STRAIN-HARDENING CEMENTITIOUS COMPOSITES

Abstract

In the present paper we propose a simple analytical model for the fracture analysis of short-fiber reinforced cementitious composites designed to undergo distributed multiple cracking prior to formation of a localized crack under tensile and shear loading. The composite in the multiple cracking state is idealized as a homogenous and continuous material, with cracks being represented by cracking strain. A discrete crack model is used for localized cracks. The model is implemented in FEM code and experimental results are reproduced, proving the validity of the proposed model.