SUPERSONIC FLUTTER OF RECTANGULAR ORTHOTROPIC PANELS WITH ARBITRARY ORIENTATION OF ORTHOTROPICITY,
Abstract
An investigation is made of the supersonic flutter of flat, simply supported, rectangular, orthotropic panels, utilizing small deflection thin plate theory and piston theory aerodynamics. Stability boundaries are obtained showing the effects of rotating the panel principal axes with respect to the geometric axes. The role of damping and the effects of panel lengthwidth ratio are also examined. Solutions are obtained using the Principle of Minimum Potential Energy together with a sixteen-mode Rayleigh-Ritz procedure. Damped flutter boundaries are found by the Movchan-Houbolt method. Calculations are performed for two example orthotropically stiffened panels and for a basic unstiffened isotropic panel. It is concluded that aligning stiffeners parallel to the air stream direction is not always the preferred orientation. A preferred orientation depends on length-width ratio, amount of damping, and amount of orthotropicity present. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1963
- Accession Number
- AD0421977
Entities
People
- John Dugundji
- John M. Calligeros
Organizations
- Massachusetts Institute of Technology