An interface element for numerical analysis of flat plate/shell elements with deformable connection

Abstract

The use of numerical methods such as the finite elements method for solving structural analysis problems is becoming ever more efficient. An interface element capable of associating flat plate/shell element in three different combinations has been developed. In a structural analysis, when only the flat plate/shell's finite elements are used in the discretization, some problems concerning dimensional variation of the transversal section, as well as overlapping of areas can occur. The aforementioned problems can be solved by the developed interface elements that can also simulate a possible deformable connection that is existent in the association of materials with different characteristics, such as the composite steel-concrete elements. One of the applications of the finite elements developed is for the numerical simulation of composite steel-concrete elements, such as the composite beam formed by a reinforced concrete slab attached to a steel beam using a deformable connection. In this case, the concrete slab and the steel beam are discretized by the flat plate/shell element, and the deformable connection done by the interface elements. In the validation of the implemented elements, we used numerical and experimental results found in the literature, and analytical solutions considering the classical plate theory. KeywordsInterface element; flat plate/shell element; composite beam; deformable connection.

EcoLinguistic Insights in Nias Village Name: Unravelling the Dynamic Bond Between Language and Environment

“…These elements reflect the intricate interplay between language, culture, and the natural world. They provide a unique lens through which the local community expresses their ecological knowledge, cultural values, and spiritual beliefs (Silva & Dias, 2018). Understanding the cultural and environmental connections in the numerical elements enriches our appreciation of the deep-rooted relationship between language, culture, and the natural world in Nias Regency.…”

Joint use of eddy current imaging and fuzzy similarities to assess the integrity of steel plates

“…), this model [6] presents difficulties in obtaining deformations, except for simple geometries and constant boundary conditions along the edges of the plates [1]. Accordingly, the numerical approach results to be the most appropriate to tackle this problem, but the reduced possibility of obtaining analytical existence/uniqueness conditions for this model does not prevent it from being affected by possible ghost solutions [9]. Anyway, the model [6] is theoretically able to produce 2D maps of the amplitude of the mechanical deformation, so that, through  the constitutive laws, it is possible to find the 2D maps of internal mechanical stresses [1,10], useful to evaluate the state of health of the plate.…”

Nonlinear numerical analysis of composite slabs with steel decking

“…Element-side coordinates (adapted of[21]) Beam element's degrees of freedom and stress in an infinitesimal element Nonlinear numerical analysis of composite slabs with steel decking to steel flat shell elements is similar thereto. For further details of these elements refer to Silva and Dias[29]. As and , the displacements equations in x and y directions for the above (α = 1) and below (α = 2) elements of the contact interface, and considering w α (x,y,z) = w α 0 (x) + y θxα (x) as the displacement equation in the z direction, Equations 19-21 for relative longitudinal displacements (x-direction), transverse (y-direction), and vertical (z-direction) of the interface element ofFigure 8, is generated.…”