Debond resisting composite stringers

Matthew P. O'Donnell*, Paul M. Weaver, Enzo Cosentino

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

2 Citations (Scopus)


The following extends existing work done by Cosentino and Weaver on predicting crack initiation in discretely assembled skin/stringer composite panels. This allows for the anal- ysis of fully coupled systems ie. non-zero B matrix. The nonlinear structural behaviour is obtained by means of the von Karman formulation for moderately large deections in plates; three-dimensional assemblies are schematized and the effect of eccentricity is in- cluded in the simulation. Solutions are calculated by means of a Rayleigh-Ritz approach based on Galerkin's method, and a linear elastic fracture mechanics-based model is used to simulate the crack initiation in the critical regions. Using this method a bi-level opti- misation using lamination parameters was performed subject to closed form buckling and debonding constraints. The optimisation was performed with respect to improving the strength and overall load carrying capacity for a fixed geometry. The results show through the use of layup optimisation incorporating exure-membrane coupling effects debonding can be reduced.

Original languageEnglish
Title of host publicationCollection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
Publication statusPublished - 1 Dec 2012
Event53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference - Honolulu, HI, United States
Duration: 23 Apr 201226 Apr 2012


Conference53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
Country/TerritoryUnited States
CityHonolulu, HI


Dive into the research topics of 'Debond resisting composite stringers'. Together they form a unique fingerprint.

Cite this