Asymptotic homogenization for modeling of wingbox structures

Demetra A. Hadjiloizi, Paul M. Weaver

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The asymptotic homogenization technique has been used to analyze a wing box structure consisting of trapezoidally arranged reinforcements encased within thin rectangular plates. Ignoring stress concentration effects at the region of the overlap between the various components, the wingbox structure can be analyzed by handling each constituent independently from each other. To this end, a simpler structure was first considered which was made up of a base plate and a single stiffener web; the results were then extrapolated to those of the wingbox structure via superposition by adding in the contributions of each constituent of the overall unit cell. The work culminated in closed-form expressions for the effective in-plane elastic coefficients of the wingbox. This result demonstrates the attractiveness of the methodology in that it can be used in engineering analysis and design to customize the architecture of a thin-walled reinforced composite by changing some material or geometrical parameters of interest. Such parameters could be the material of the base plate, the spatial arrangement of the reinforcements, the relative sizes of the different constituents.

Original languageEnglish
Title of host publicationAIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105326
DOIs
Publication statusPublished - 2018
EventAIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 2018 - Kissimmee, United States
Duration: 8 Jan 201812 Jan 2018

Publication series

NameAIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 2018

Conference

ConferenceAIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 2018
Country/TerritoryUnited States
CityKissimmee
Period8/01/1812/01/18

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