Research on the normality of the plastic strain vector to the yield surface in RC sections

In this study, the normality condition of the plastic strain vector to the yield surface utilized for elastic-perfectly plastic materials is investigated for reinforced concrete (RC) sections. If the plastic strain vector can be assumed outward normal to the yield surface in RC sections under combin...

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Bibliographic Details
Published in:Materials and structures 2014-07, Vol.47 (7), p.1115-1130
Main Authors: Girgin, Konuralp, Girgin, Z. Canan, Aksoylu, M. Gunhan
Format: Article
Language:English
Subjects:
Applied sciences
Bending
Building construction
Building Materials
Building structure
Buildings. Public works
Civil Engineering
Construction (buildings and works)
Engineering
Exact sciences and technology
Machines
Manufacturing
Materials Science
Mathematical analysis
Normality
Original Article
Plastic deformation
Plastic strain
Processes
Reinforced concrete
Reinforced concrete structure
Solid Mechanics
Strain
Strength of materials (elasticity, plasticity, buckling, etc.)
Structural analysis. Stresses
Theoretical and Applied Mechanics
Vectors (mathematics)
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Summary:In this study, the normality condition of the plastic strain vector to the yield surface utilized for elastic-perfectly plastic materials is investigated for reinforced concrete (RC) sections. If the plastic strain vector can be assumed outward normal to the yield surface in RC sections under combined biaxial bending and axial load, the components of the vector can be expressed by a single parameter. Thus, the material nonlinearity can be simplified through the extended plastic hinge concept based on the normality condition. In this study the normality of the plastic strain vector is verified via numerical examples in symmetrically reinforced rectangular and circular RC sections subjected to biaxial bending and axial load for various configurations of longitudinal reinforcement.
ISSN:1359-5997
1871-6873
DOI:10.1617/s11527-013-0116-3