A Validated Finite Element Model of an F-111 Lower Wing Skin Structural Detail at Forward Auxilliary Spar Station (FASS) 281.28.

Abstract

This report describes an AMRL developed and validated Finite Element model of the F-111A lower wing skin (Serial Number A-10-824) at Forward Auxiliary Spar Station (FASS) 281.28 and constitutes part of an extensive AMRL bonded composite repair substantiation program initiated by the RAAF following the discovery of fatigue cracking at FASS 281.28 in an F-111C aircraft Strain data from the FE model is compared with measured strain gauge data from an F-111A static test wing under Cold Proof Loading Test (CPLT) or limit conditions. A relationship between nominal section stress at FASS 281.28 and local bending moment is established. The FE model will be further developed to include the fatigue crack, the adhesive and the boron epoxy patch.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1996
Accession Number
ADA324121

Entities

People

  • D. Keeley
  • R. Callinan
  • S. Sanderson

Organizations

  • Defence Science and Technology Group

Tags

Communities of Interest

  • Air Platforms
  • Space

DTIC Thesaurus Topics

  • Air Force
  • Aircrafts
  • Airframes
  • Bending Moments
  • Coordinate Systems
  • Cracks
  • Equations
  • Far Field
  • Gages
  • Geometry
  • Materials
  • Mechanical Working
  • Outboard
  • Spars
  • Strain Gages
  • Stress Strain Relations
  • Three Dimensional

Readers

  • Structural Health Monitoring of Composite Structures.