Akademik Veri Yönetim Sistemi
Proceedings of 3rd International Civil Engineering and Architecture Congress (ICEARC’23), Trabzon, Türkiye, 12 - 14 Ekim 2023, cilt.1, ss.1054-1072
Purpose: A nonlinear material model for concrete and reinforcement was created in order to establish numerical models of two-dimensional reinforced concrete membrane problems. Study design/methodology/approach: Based on the Druker-Prager model for the concrete material, the hardening zone is defined as a multi-part linear curve. The open region of the conical yield surface is covered with a circular cap in the p-q plane. The Mander concrete model curve, which was expressed in TBEC-2018, was chosen as the concrete stressstrain curve. When the plastic strain begins to occur, Poisson's ratio, dilation rate, cohesion, shear modulus, tangent modulus, elasticity modulus and secant elasticity modulus are updated to follow the Mander curve. The reinforcement is considered as a linear elastic, perfect plastic material model according to the von-Mises criterion. A finite element modeling program was developed using the MATLAB programming language in order to define the materials and provide the solution of the system.
Findings: Finite element modeling program developed in line with the obtained data; until the end of hardening, it provides reasonably consistent results, not only at the force-displacement level, but also at the stress-strain, neutral axis depth and damage level levels, without the need for any further analysis and research on the value of the parameters for validation used in the definition of the concrete material. Originality/value: The values updated to follow the Mander concrete model curve were quite effective in the consistency of results.
Keywords: A Capped Drucker-Prager Model; Hardening In Concrete; Mander Concrete Model; Dilation Rate; Damage Parameter