Applied Composite Materials

, Volume 19, Issue 3–4, pp 219–236 | Cite as

Post Buckling Progressive Failure Analysis of Composite Laminated Stiffened Panels

  • Konstantinos N. Anyfantis
  • Nicholas G. Tsouvalis
Article

Abstract

The present work deals with the numerical prediction of the post buckling progressive and final failure response of stiffened composite panels based on structural nonlinear finite element methods. For this purpose, a progressive failure model (PFM) is developed and applied to predict the behaviour of an experimentally tested blade-stiffened panel found in the literature. Failure initiation and propagation is calculated, owing to the accumulation of the intralaminar failure modes induced in fibre reinforced composite materials. Hashin failure criteria have been employed in order to address the fiber and matrix failure modes in compression and tension. On the other hand, the Tsai-Wu failure criterion has been utilized for addressing shear failure. Failure detection is followed with the introduction of corresponding material degradation rules depending on the individual failure mechanisms. Failure initiation and failure propagation as well as the post buckling ultimate attained load have been numerically evaluated. Final failure behaviour of the simulated stiffened panel is due to sudden global failure, as concluded from comparisons between numerical and experimental results being in good agreement.

Keywords

Finite element analysis Progressive failure Damage mechanics Buckling 

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Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • Konstantinos N. Anyfantis
    • 1
  • Nicholas G. Tsouvalis
    • 1
  1. 1.Shipbuilding Technology Laboratory, School of Naval Architecture and Marine EngineeringNational Technical University of AthensAthensGreece

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