FraMCoS 3 1998 Gifu, Japan

Multi Equivalent Series Phase Model for Nonlocal Constitutive Relations of Concrete

Multi Equivalent Series Phase Model is derived as a macroscopic constitutive law to describe the size effects localization in concrete. Fracture localization at the ................ ,. .......... ,.,. ..... ,,.,, modeled using a series phase consisting of fracture and phases.…

First page of: Multi Equivalent Series Phase Model for Nonlocal Constitutive Relations of Concrete
Year 1998
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Abstract

Multi Equivalent Series Phase Model is derived as a macroscopic constitutive law to describe the size effects localization in concrete. Fracture localization at the ................ ,. .......... ,.,. ..... ,,.,, modeled using a series phase consisting of fracture and phases. Based on a constant plastic fracture energy law, the stress-strain softening relations of the series phase are converted into those of an series phase taking into account the length of the series phase. As load-carrying mechanism of concrete, a number of equivalent series phases are assumed to be distributed with various orientations the concrete, and strains series phase are kinematically constrained by the ................... ,.;...,...,~..,.L..., The resulting incremental stiffness tensor yields an integral orientations of equivalent series phases; this is very o.uu ........ u,..._ Enhanced Microplane Concrete Model. It is shown that the good predictions of the experimentally obtained size effects on concrete constitutive relations.