A Validated Finite Element Model of an F-111 Lower Wing Skin Structural Detail at Forward Auxilliary Spar Station (FASS) 281.28.
DEFENCE SCIENCE AND TECHNOLOGY ORGANIZATION CANBERRA (AUSTRALIA)
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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.
- Military Aircraft Operations
- Numerical Mathematics
- Operations Research