Consideração de efeitos térmicos em sólidos bidimensionais não lineares

Abstract

This paper aims to study the thermomechanical behavior in bidimensional solids, taking into account the physical and geometric nonlinear effects. To consider the thermal effects, a formulation based on the first and second laws of thermodynamic and the Helmholtz free-energy is presented here. It is essential to analyze the thermoelastic and thermoplastic behavior in dynamic structural response. The Finite Element Method based on nodal positions, instead nodal displacements, is employed as geometric nonlinear formulation. For dynamic problems, a temporal discretization by several temporal integration algorithms conduces to the equation of motion solution. In addition, this formulation can be extended to impact problems. Therefore, the development of computational routines for the proposed formulation induces numerical results are compared with examples from the specialized literature.