Different FEM methodologies for modeling a cladding plate

Priscila Mello Godinho¹; Bruna Carvalho do Nascimento¹; JOSÉ RUBENS GONÇALVES CARNEIRO¹; PEDRO PAIVA BRITO¹

¹ Pontifícia Universidade Católica de Minas Gerais

doi:10.20906/CPS/CILAMCE2017-1299

Resumo

The Finite Element Method (FEM) is an analysis method that a field variable is approximated by the simple interpolation functions connection, each one defined in a small region. The problem formulation results in a simultaneous differential equation system. This process occurs by modeling a body through its division into an equivalent system of smaller bodies or units (finite elements), interconnected to common points (nodal points or nodes), dividing lines and surfaces, creating the mesh (SORIANO, 2009). This process is made by the engineer, which defines the solid model and inserts the boundary conditions information in the model. Therefore, the results are influenced directly by the modelling methodology. A simplification or a wrong consideration can lead to a wrong result, compromising the analysis. Currently, through the technological development and with the need to ally different mechanical properties, that are not possible in the same material, the industry has been investing in the development of composite materials. This material consists of the union of two different materials under which the mechanical properties are designed to optimize certain applications, different from those of each phase (material) acting independently (BEIM, 2008). Among this class of composite materials, the cladding plate material can be highlighted because its use in petrochemical industry in order to combine corrosion resistance and high mechanical resistance (AMERICAN SOCIETY FOR METALS, 1983). Thus, it is extremely important to ensure that these materials do not fail in work conditions, and one of the tools of structural analysis that assists in ensuring that the structural parameters for a given load are met is the simulation by FEM. So, this work simulated a tensile test of a cladding plate material modeled under two different methodologies and compared the results obtained in the simulations with the actual curves obtained in the physical test to determine the best methodology for modeling these materials. In the first

Palavras-chave: Finite Element Method (FEM); Cladding Plate ; Coating