CONSIDERATIONS IN THE DESIGN OF SUPPORTS FOR PANELS IN FATIGUE TESTS.
Abstract
The question is studied of how a test panel, which represents one of an assemblage of panels in a prototype (e.g., an aircraft fuselage), should be supported, so that a fatigue test of that panel yields the same result as a test of a complete prototype. The recommendation is developed that one should test the panel of interest at the center of a three-by-three panel array, rather than by itself, in order to obtain realistic representations of the boundary stiffness, energy dissipation, and energy transport properties. Considerations in obtaining practical supports that provide approximate free, clamped, and simply supported boundary conditions are investigated and reduced to design equations, graphs, and recommendations. Extensive analyses of the effects of boundary conditions on maximum stresses in resonantly and in randomly vibrating plates and cylindrical shells are appended, as are the results of experiments and analyses concerned with the determination of damping and energy transport in multipanel structures. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1967
- Accession Number
- AD0822899
Entities
People
- Eric E. Ungar
- Kyung S. Lee
Organizations
- BBN Technologies