Detennining the constitutive model is a key procedure in numerical simulation of concrete structures. The uniaxial stress-strain curve important information to determine model. This paper provided simplified that can be used simulation. comparison between Chinese Code and shows compression close code value. Numerical beams show proposed has high computational efficiency good convergence.

Abstract To determine the stress–strain curve of a ductile material up to fracture from tensile test, necking contour is measured by an optical measurement technique. The radius minimal cross-sectional area and curvature are used as input for analytical corrections curve, well finite element inverse simulations. Due increasing surface roughness that develops during testing, precise determinatio...

Large deformation finite element analysis has been carried out to investigate the stress-strain fields ahead of a growing crack for compact tension (a/W=0.5) and three-point bend (a/W=0.1 and 0.5) specimens under plane stress condition. The crack growth is controlled by the experimental J-integral resistance curves measured by Sun et al. The results indicate that the distributions of opening st...

The nanoindentation experiment was carried out to estimate nanomechanical characteristics of polycarbonate polymer films. Hardness, effective elastic modulus and contact stress–strain rate curve were obtained. The results showed that the effective elastic modulus and the hardness decreased as the applied load was increased. As the hold time was increased, the effective elastic modulus and the h...

Thirty-one materials have been tested in compression in order to generate the stress (force per unit of cross-sectional area) versus strain (deformation) behaviour, for the purpose of assessing the suitability of various foamed plastics and rubbers as shoe insole materials. It was found that the materials could be classified into three distinct categories (very stiff, moderately deformable and ...

In this study, two-dimensional finite element modeling was used to study the simultaneous effect of the cell shape and regular cell distribution on the anisotropy of the elastic properties of 316L stainless steel foam. In this way, the uniaxial compressive stress-strain curve was predicted using a geometric model and fully solid 316L stainless steel. The results showed that the elastic tangent ...