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MECSOL 2019
7th International Symposium on Solid Mechanics
Nonlinear Finite Element Aeroelastic Analysis of Semi-Infinite Composite Plates Considering Progressive Failure
Submission Author:
Douglas Tsunematsu , SP
Co-Authors:
Douglas Tsunematsu, Mauricio Donadon
Presenter: Douglas Tsunematsu
doi://10.26678/ABCM.MECSOL2019.MSL19-0013
Abstract
The present work considers a nonlinear finite element model for predicting the aeroelastic behavior of semi-infinite composite plates undergoing intralaminar and translaminar progressive damage in supersonic flow. The semi-infinite plate is modeled using the classical plate theory in conjunction with the von Kármán nonlinear strains, where a plane strain state is assumed. The linear piston theory is used to model the aerodynamic loads. Progressive failure is modeled by a smeared cracking formulation in which stress-based, continuum damage mechanics and fracture mechanics approaches are combined. The nonlinear equations are solved by employing the Newmark method without performing a modal reduction procedure. A simulation for an angle-ply laminate is presented, and the results show that damage considerably changes the aeroelastic behavior of the structure.
Keywords
Aeroelasticity, Panel Flutter, Composites, progressive failure, Finite Element Method
