NONLINEAR NUMERICAL MODELLING OF LIGHTENING STRIKE EFFECT ON COMPOSITE PANELS WITH TEMPERATURE DEPENDANT MATERIAL PROPERTIES

Research output: Contribution to conferencePaper

Abstract

Lightning strike is one of the challenges that the aerospace industry is facing in an effort to increase the percentage of composite materials used in aircraft structures. Lightning strike damage is due to high orthotropic electric resistivity of the composite panels, which leads to high thermal loads that cause decomposition of the epoxy and delimitations of the laminates. Yet, experimental testing of lightning strike on aircraft panels is expensive due to the large number of design parameters that can control the inflicted damage. A coupled thermal-electrical finite element analysis is used to investigate the design variables space that can affect lightning strike damage on epoxy/graphite composite panels. The contribution of this study is modeling the composite panels’ material properties as temperature dependent, which was excluded by other researchers. A number of practical solutions to minimize the damage effect are proposed. Two set of experimental results are used to verify the numerical ones. One experimental set for plain composite panel, and second one for composite panels with joints
Original languageEnglish
Pages1-20
Number of pages20
Publication statusPublished - 2013
Event17th International Conference on Composite Structures - FEUP, Porto, Portugal
Duration: 17 Jun 201321 Jun 2013

Conference

Conference17th International Conference on Composite Structures
CountryPortugal
CityPorto
Period17/06/201321/06/2013

Keywords

  • composites
  • lightning strike
  • Finite element
  • thermal protection system

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  • Cite this

    Abdelal, G., & Murphy, A. (2013). NONLINEAR NUMERICAL MODELLING OF LIGHTENING STRIKE EFFECT ON COMPOSITE PANELS WITH TEMPERATURE DEPENDANT MATERIAL PROPERTIES. 1-20. Paper presented at 17th International Conference on Composite Structures, Porto, Portugal.