Stability Analysis of Free-Free Beams Using Finite Elements - An Unconstrained Adjoint Variational Approach.
Abstract
The stability behavior of a flexible missile idealized as a free-free beam is studied using the finite element technique. The structure is assumed to be under a constant thrust which, in turn, is subjected to a directional control device. A concentrated mass is included to model a piece of heavy machinery. The solution formulation - finite element in conjunction with unconstrained variational principles - is shown here to be general, simple to use and effective to overcome the difficulties arising from nonconservative forces, concentrated mass and feedback control features. As a basis of this approach, an unconstrained variational statement and the associated adjoint problems are introduced.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1975
- Accession Number
- ADA020424
Entities
People
- Julian J. Wu