ASTROS-ID: Software for System Identification Using Mathematical Programming
Abstract
ASTROS is a multidisciplinary optimization computer program developed for Wright Laboratory. It seeks minimum weight structural designs subject to constraints on displacements, stresses, vibration frequencies, flutter speeds, etc. The program is based on a versatile set of software tools including a relational database, a matrix programming language, and an input description facility, all of which make the program readily extensible by knowledgable users. This report documents an extension to ASTROS (called ASTROS-ID) which makes it possible to tune finite element models to enhance their correspondence with measured frequencies and mode shapes. ASTROS existing optimization package is used to construct a constrained minimization problem where the user may choose to include particular frequencies and mode shape entries either in the objective function, in a least squares sense, or in constraints which require conformance within a given tolerance. Other terms include an excursion penalty and a weight deviation penalty. At the time of writing, ASTROS-ID was still in the research stage and had not been subject to beta testing.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1992
- Accession Number
- ADA260867
Entities
People
- Warren C. Gibson