A NASTRAN FEM code for the AH-64A helicopter airframe has been evaluated in light of suspended-fuselage shake tests that determined this aircraft's frequency-response characteristics at numerous measurement locations throughout the structure. Natural frequencies and mode shapes have been estimated from frequency-response data. On the basis of the correlation study results obtained, several modifications were made to the FEM model, yielding significant performance improvements.
AH-64A shake test and correlation with NASTRAN finite element model predictions
AHS, Annual Forum ; 1987 ; Saint Louis, MO, United States
1987-01-01
Aufsatz (Konferenz)
Keine Angabe
Englisch