Investigation of a Two-Dimensional Model for the Prediction of Static Displacement for T-38 Horizontal Stabilators Using NASTRAN.
Abstract
THIS REPORT DOCUMENTS THE RESULTS OF THE EXPERIMENTAL TESTS PERFORMED ON A T-38 horizontal stabilator and the investigation of a two-dimensional finite element model for prediction of static displacement using NASA structural analysis (NASTRAN) computer program. The finite element model was used in previous and concurrent theses efforts with regard to T-38 flutter prediction via NASTRAN modal analysis methods. It will also be used in future nalayses by a Using Air Force Agency for flutter prediction. The experimental test set-up for the stabilator measured the displacements in the downward (water line) direction for ten load conditions with the displacements measured at twenty-five locations for each of the loading conditions. The results of the experimental tests were compared with those developed using NASTRAN. Several of the model characteristics were altered and investigated as to their effect on the prediction of the static displacement. The analytical displacements were compared with those achieved experimentally. Finally, development of an optimization procedure is presented, as well as its application to tuning the finite element model.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1981
- Accession Number
- ADA111100
Entities
People
- Jack Orin Sawdy
Organizations
- Air Force Institute of Technology