STIFFNESS DESCRIBER OF A FILAMENT WOUND CYLINDER FOR DYNAMIC ANALYSES.
Abstract
This report presents a technique for assembling a Stiffness Describer for Filament-Wound Cylinders (FWC) in the form of a Stiffness Matrix. The technique described provides the dynamicist with the means to analyze FWC. The data that would be required are physical properties such as: Poisson's Ratio, Moduli of Elasticity and Rigidity for the filament and resin, winding angles of plies, geometric data such as cylinder length, radius, overall thickness. The technique described produces a method for representing FWC analogous to that developed for beam-plate complex structures. The derivation of the Stiffness Describer of a FWC entails: writing the load-deflection equations for a shell in matrix form, applying boundary conditions for axial lengths (for assembly purposes), and mathematical modeling of FWC in terms of physical material constants. The expressions used to define structural relationships arose from strain energy considerations for shells and for plies at various angles to the cylinder's axis. The mathematical modeling was based on load paths that occur in composite materials. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1965
- Accession Number
- AD0626226
Entities
People
- Jacob M. Miller