FASTOP-3: A Strength, Deflection, and Flutter Optimization Program for Metallic and Composite Structures. Volume 1. Theory and Application
Abstract
This report presents the results of an effort to improve the usefulness of the FASTOP (Flutter and Strength Optimization Program) computer- program system, originally documented in AFFDL-TR-75-137, by introducing the capabilities of the ASOP-3 program, as documented in AFFDL-TR-76-157. The new version of the system is named FASTOP-3. The following improvements have been made: (1) composite materials of laminated filamentary construction can be resized for strength and flutter-speed constraints with the same level of automation that previously existed for metallic construction. (2) A deflection constraint generalized as a linear combination of translational displacements at several structural nodes can be applied to metallic and composite structures. This permits the treatment of constraints on lifting-surface twist and camber. (3) Multiple deflection constraints can be treated in a limited, but practically important, class of problems by multiple submissions of single- constraint cases. This process has been largely automated. (4) Elastic restraint at structural support points can be treated. (5) Reactions at rigid and elastic supports are computed and their resultants determined.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1978
- Accession Number
- ADB029162
Entities
People
- Gabriel Isakson
- Joel Markowitz
Organizations
- Grumman