Constitutive Models for Concrete in Plasticity

For a structural engineer, the appropriate success in analysis and design of concrete structures depends on his/ her understanding of the proper behavior of the concrete material under different loading conditions. Therefore in this work the behavior of concrete under different loading conditions is studied. Litewka et. al. (2002) plasticity model available in literature is studied to obtain realistic results. Yield function, hardening and softening function, plastic potential function, flow rule etc. are required to define plasticity model. The material behavior described by this plasticity model is compared with experimental data. Model performance shows predicted results are in good agreement with the experimental data. Depending upon accuracy in material behavior prediction, the corresponding computational models will be very useful in development of commercial software for analysis and design of concrete structure.