Numerical simulation of steel-concrete composite beams: updated strategies of finite element modeling

Abstract

The use of steel-concrete composite beams allows the best properties of these materials to be explored, resulting in more economical solutions. Many researchers have studied the behavior of composite beams from different strategies of numerical modeling, and some of these are presented in this article. In this context, the present work proposes the construction of a tridimensional numerical model using ANSYS software, version 19.2, with current-technology elements and compatible material models. For the simulation of concrete behavior, two models have been used: the first, denominated DP-CONCRETE, is a native ANSYS model, available in the more recent versions of this software; and the second, denominated USERMAT, is a customizable model that was developed based on Ottosen criterion. The results obtained with these models for the analyzed beams presented a good correlation with the experimental results and with numerical results from previous works.

Effect of design parameters on the ultimate strength and collapse behaviour of stiffened panels

“…As shown in Figure 10 [27], where r, s, and t represent degrees of freedom in the form of translational motion, u, v, and w indicate that this type of shell can move in the direction of rotation. Type "Shell-181", also used by [28][29][30][31][32][33][34][35][36] in evaluating stiffened panels and various thin-walled and curved-layered structures, explained that the whole type of motion works on a 3-dimensional scope. Therefore, a total of 6 DOF with the type of model material in the form of bilinear isotropic hardening compiles a model to describe plastic deformation when subjected to an external force.…”