A non-linear analytical approach for preliminary sizing of diecrete composite stringer terminations

E Cosentino, PM Weaver

Research output: Contribution to journalArticle (Academic Journal)

12 Citations (Scopus)

Abstract

Arecently developed nonlinear approach is adapted and used to predict crack initiation in stringer terminations of discretely assembled composite panels made from skin and stiffeners. A linear elastic fracture mechanics based submodel is used to simulate the crack initiation in the critical regions and the influence of ply drop-off is captured. The von Kármán formulation for moderately large deflections in plates is used to capture the nonlinear structural behavior; three-dimensional assemblies are schematized and the effect of eccentricity is included in the simulation. An optimum design criterion is sought and basic guidelines for good design are provided. Furthermore, a method for preliminary assessment of structural strength is proposed and predictions are validated against detailed nonlinear finite element analysis
Translated title of the contributionA non-linear analytical approach for preliminary sizing of diecrete composite stringer terminations
Original languageEnglish
Pages (from-to)606 - 617
Number of pages12
JournalAIAA Journal
Volume43 (3)
DOIs
Publication statusPublished - Mar 2009

Bibliographical note

Publisher: AIAA

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