A NASTRAN Investigation of Simulated Projectile Damage Effects on a UH-1B Tail Boom Model.
Abstract
A NASTRAN finite element method analysis was performed on a model of a UH-1B tail boom. Projectile damage was simulated by systematically deleting panels and beam elements. The model was subjected to forces to simulate the flight loads that would be imposed by a 130-knot cruise velocity. Displacements of four points at the base of the vertical fin were used as a measure of loss of structural rigidity. The displacements were measured relative to the unloaded, undamaged state of the tail boom. The analysis was performed on tail booms constructed of aluminum alloy, then the material constants were changed to represent T300/5208, high-strength Graphite/Epoxy fibrous composite 0, + or - 45,90s for the plate elements, 0, + or - 45s for the beam elements.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1981
- Accession Number
- ADA096876
Entities
People
- Arnold T. Futterer
Organizations
- Ballistic Research Laboratory