Damage Tolerance of Buckling Optimized Variable Angle Tow Panels

Richard Butler, Neil Baker, Wenli Liu

Research output: Contribution to conferencePaper

2 Citations (Scopus)

Abstract

Elastic stiffness tailoring of composite panels with curved fibers, or Variable Angle Tows (VATs), for maximum buckling performance is presented. The panels are modelled efficiently using the exact finite strip program, VICONOPT, and are optimized using a Genetic Algorithm. VAT panel designs are compared with straight fiber panels and are shown to offer weight saving potential by increasing panel buckling loads. Finite strip analysis is also combined with a fracture mechanics model to predict the compressive strength (damage tolerance) of panels delaminated by impact damage. The analysis, which shows good agreement with experimental failure strains for straight fiber panels, is applied to the VAT designs. Results show that damage tolerance is critical for heavily loaded panels and for panels with closely spaced longitudinal supports.
Original languageEnglish
Publication statusPublished - May 2009
Event50th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics & Materials Conference - Palm Springs, CA, USA United States
Duration: 4 May 20097 May 2009

Conference

Conference50th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics & Materials Conference
CountryUSA United States
CityPalm Springs, CA
Period4/05/097/05/09

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  • Cite this

    Butler, R., Baker, N., & Liu, W. (2009). Damage Tolerance of Buckling Optimized Variable Angle Tow Panels. Paper presented at 50th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics & Materials Conference, Palm Springs, CA, USA United States.