Abstract: A method for the computation of the interaction surface of reinforced-concrete sections subjected to axial load and biaxial bending is developed. The method is analytically exact and it is based on using Green's theorem ...

Abstract: A new method for nonlinear structural analysis has been developed. The novelty of the method is that only one stiffness matrix inversion is required without the need for updating and reinverting the matrix at every load ...

Abstract: A nonlinear hardening rule that defines a yield surface translation for homogeneous frame member materials is proposed. The rule is defined as a nonlinear constitutive relationship that examines material behavior through ...

Abstract: An incremental three-dimensional stress-strain relationship for concrete with induced anisotropy has been developed. The nonlinearity and path-dependency are modeled by expressing the elastic moduli ...

Abstract: An incremental three-dimensional constitutive relation for concrete has been developed. The linear anisotropic and path-dependent behavior is modeled by updating the stiffness matrix at each load ...

Abstract: The salient features and concepts of a model developed in Part I of this paper are reviewed. The model is extended to include dilatancy and shear compaction which are determined from uniaxial ...

Abstract: A new constitutive model for interface shear in concrete is presented. The composite is treated as a single-phase medium with no distinction in the strength difference between the matrix and ...

Abstract: The boundary element application of a micromechanics based constitutive model for rough cracks previously developed by the authors is presented. This constitutive model considers the off-diagonal ...

Abstract: An incremental type of stress‐strain relationship is proposed for simulating the hysteretic response of concrete, subjected to biaxial cyclic loading. The behavior of concrete is represented by an infinite number of ...

Abstract: The salient features and concepts of a model developed recently are reviewed. The parameters of the model are the peak compressive stress of concrete, initial elastic modulus, and tangential Poisson's ratio. The peak stress ...