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Three-axial stress state material validation by PRECON3D (CROSBI ID 600185)

Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija

Galić, Mirela ; Marović, Pavao Three-axial stress state material validation by PRECON3D // Book of Abstracts / Onate, Eugenio ; Owen, Roger ; Perić, Đorđe et al. (ur.). Barcelona: International Center for Numerical Methods in Engineering (CIMNE), 2013. str. a636-1-a636-1

Podaci o odgovornosti

Galić, Mirela ; Marović, Pavao

engleski

Three-axial stress state material validation by PRECON3D

We have developed so called Modified Mohr-Coulomb – Rankine material model for concrete considering all dominant influences in concrete: yielding in compression, fracture in tension, softening and hardening, i.e. a three-dimensional elasto-plastic material model which is based on the Mohr-Coulomb criterion for dominant compression stresses and the Rankine criterion for dominant tension stresses. The model is defined by elementary material parameters (Young’s modulus of elasticity, Poisson’s coefficient, maximal uniaxial tensile and compression stresses, coefficient of tensile correction, maximal tensile and maximal compression strains). A multi-surface presentation of the model is implemented which permits the rapid convergence of the mathematical procedure. The presented material numerical model for concrete is incorporated into developed computer programme PRECON3D for the three-dimensional analyses of reinforced and prestressed concrete structures where the structures are discretized by three-dimensional finite elements with an embedded one-dimensional element of reinforcement and prestressed tendons. Considering triaxial stress state, we will performed parametric analyses varying the size (decimal grade scale) and the orientation of these three stresses (σx, σy and σz) in three perpendicular planes obtaining stress states in eight octahedrals (tension-tension-tension (t-t-t), t-t-c, t-c-t, t-c-c, c-t-t, c-t-c, c-c-t, and compression-compression-compression (c-c-c)). So, the paper will present the validation of developed material numerical model and the obtained results will be compared with the known numerical and experimental ones. It is concluded that the presented material numerical model incorporated into developed computer programme can be effectively used in the nonlinear analysis of reinforced and prestressed concrete structures.

three-axial stress state; numerical model; concrete model; validation; finite element method

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Podaci o prilogu

a636-1-a636-1.

2013.

objavljeno

Podaci o matičnoj publikaciji

Book of Abstracts

Onate, Eugenio ; Owen, Roger ; Perić, Đorđe ; Suarez, Benjamin

Barcelona: International Center for Numerical Methods in Engineering (CIMNE)

Podaci o skupu

12th International Conference on Computational Plasticity: Fundamentals and Applications

pozvano predavanje

03.09.2013-05.09.2013

Barcelona, Španjolska

Povezanost rada

Građevinarstvo, Temeljne tehničke znanosti