Three-axial stress state material validation by PRECON3D (CROSBI ID 600185)
Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija
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