NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
New evidence favoring multilevel decomposition and optimizationThe issue of the utility of multilevel decomposition and optimization remains controversial. To date, only the structural optimization community has actively developed and promoted multilevel optimization techniques. However, even this community acknowledges that multilevel optimization is ideally suited for a rather limited set of problems. It is warned that decomposition typically requires eliminating local variables by using global variables and that this in turn causes ill-conditioning of the multilevel optimization by adding equality constraints. The purpose is to suggest a new multilevel optimization technique. This technique uses behavior variables, in addition to design variables and constraints, to decompose the problem. The new technique removes the need for equality constraints, simplifies the decomposition of the design problem, simplifies the programming task, and improves the convergence speed of multilevel optimization compared to conventional optimization.
Document ID
19940004665
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Padula, Sharon L.
(NASA Langley Research Center Hampton, VA, United States)
Polignone, Debra A.
(Virginia Univ. Charlottesville., United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1990
Publication Information
Publication: The Third Air Force(NASA Symposium on Recent Advances in Multidisciplinary Analysis and Optimization
Subject Category
Structural Mechanics
Accession Number
94N71420
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Document Inquiry

Available Downloads

There are no available downloads for this record.
No Preview Available