Numerical integration of a class of 3d plastic-damage concrete models and condensation of 3d stress–strain relations for use in beam finite elements
By A. Saritas, Filippos Filippou. 2009
47 citations recorded by the source corpus.
Abstract This paper presents a method for the integration of a class of plastic-damage material models. The integration of the evolution equations results in a nonlinear problem, which is linearized and solved with the Newton–Raphson method using a sub-stepping strategy. The consistent tangent matrix can be formulated either in terms of the stress components in a general reference system or in terms of the principal stress and strain components with the former then transformed to the general reference system. In order to account for plane stress conditions, the stress–strain relations of the 3d material model are then condensed out. Plane stress conditions are imposed by the linearization of the stresses that need to be set equal to zero; thus the strain fields are updated in the corresponding directions. This solution method is extended to include transverse pressure and the effect of transverse reinforcing steel for a 3d concrete material model. The equilibrium of the stresses in the reinforcing steel and concrete is linearized and the strain fields are updated until the residual satisfies a specified tolerance. The consistent tangent matrix due to the condensation process is derived. The proposed algorithms are tested at the material and element level by comparison of numerical solutions with available experimental data.
Subfields: Building and Construction, Civil and Structural Engineering, Mechanics of Materials
View Paper: https://www.semanticscholar.org/paper/8afa153917aa4648aff6b442bae528079ab1dee1
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In Building and Construction
In Civil and Structural Engineering
In Mechanics of Materials
Citations in the corpus
- Finite element modelling approach for precast reinforced concrete beam-to-column connections under cyclic loading (2018, background): “The 256 tensile fracture energies are ranging from 100 N/m to 130 N/m, while the compressive fracture energies are ranging 257 from 25000 N/m to 35000 N/m [36, 52].”