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

E Cosentino, PM Weaver

Research output: Contribution to journalArticle (Academic Journal)peer-review

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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