Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
A Finite Element Method Analysis for the Interlaminar Failure Modelling of Thin Symmetric Laminated Composite Plates
Submission Author:
Armando Italo de Paula Goncalves , CE , Brazil
Co-Authors:
Armando Italo de Paula Goncalves, Carlos Daros
Presenter: Armando Italo de Paula Goncalves
doi://10.26678/ABCM.COBEM2021.COB2021-1399
Abstract
A linear finite element analysis is considered here for the static modelling of thin symmetric laminated composite plates. Composite laminates are applied in various engineering fields, e.g., in aerospace structures. The Classical Plate Theory (CPT) for Laminates is the equivalent of Kirchhoff's Theory for simple plates. The kinematic assumptions of Kirchhoff's Theory allow an excellent modelling of thin plates. However, the CPT does not include the out-of-plane stress state, which is vital for assessing the interlaminar stresses on laminated composite plates. But integration of the equilibrium equations in strong form allows the recovery of the out-of-plane stress state, provided the finite element has a sufficient degree of continuity. Hence, by recovering the interlaminar stresses we may use some available failure criteria for the interlaminar failure of laminated composites. We shall examine one type of polynomial approximation for finite elements for plates to recover the out-of-plane stress state, aiming at studying the interlaminar failure of laminated composites via the modified Tsai-Wu failure criteria.
Keywords
Interlaminar Failure, Finite Element Method, Laminated composites, Thin plates, Classical Plate Theory
