Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
EXTRACTION OF TRANSVERSE AND IN-PLANE DISPLACEMENTS AND STRESSES FROM GENERALIZED FINITE ELEMENT METHOD BASED ON REISSNER-MINDLIN MODEL
Submission Author:
Wellington Rhoden de Lemos , SC
Co-Authors:
Wellington Rhoden de Lemos, Paulo de Tarso Mendonça
Presenter: Paulo de Tarso Mendonça
doi://10.26678/ABCM.COBEM2019.COB2019-0484
Abstract
This paper reports the development extraction procedures for stress and displacements, post-processed from the Finite Element (FEM) models of laminated composite plates based on the Reissner-Mindlin first order model. The procedures start with the stresses obtained directly from the Generalized FEM results, obtained by constitutive equations. These distributions are modified by imposition of the following general local equations: (a) local satisfaction of the local equilibrium equations; (b) boundary conditions on both laminate faces; (c) equivalence with the constitutive shear stresses resultants; (d) stress continuity at layers interfaces. (e) transverse and in-plane displacements are obtained from the three-dimensional local stress-strain relations for anisotropic layers. Numerical comparison with three dimensional exact solutions shows that the transverse stresses obtained across thickness are effective for non-symmetric laminates. The displacements obtained across the thickness are satisfactory.
Keywords
Layered composite structures, Stress recovery, post-processing, Reissner-Mindlin model, Generalized Finite Element Method
