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Record 1 of 260
Large-scale structural optimization
Author and Affiliation:
Sobieszczanski-Sobieski, J.(NASA Langley Reserach Center, Hampton, VA, United States)
Abstract: Problems encountered by aerospace designers in attempting to optimize whole aircraft are discussed, along with possible solutions. Large scale optimization, as opposed to component-by-component optimization, is hindered by computational costs, software inflexibility, concentration on a single, rather than trade-off, design methodology and the incompatibility of large-scale optimization with single program, single computer methods. The software problem can be approached by placing the full analysis outside of the optimization loop. Full analysis is then performed only periodically. Problem-dependent software can be removed from the generic code using a systems programming technique, and then embody the definitions of design variables, objective function and design constraints. Trade-off algorithms can be used at the design points to obtain quantitative answers. Finally, decomposing the large-scale problem into independent subproblems allows systematic optimization of the problems by an organization of people and machines.
Publication Date: Jan 01, 1983
Document ID:
19840066337
(Acquired Nov 28, 1995)
Accession Number: 84A49124
Subject Category: STRUCTURAL MECHANICS
Document Type: Conference Paper
Publication Information: (SEE A84-49102 24-31)
Publisher Information: United States
Financial Sponsor: NASA; United States
Organization Source: NASA Langley Research Center; Hampton, VA, United States
Description: 3p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: AIRCRAFT STRUCTURES; COMPUTER AIDED DESIGN; STRUCTURAL DESIGN; AIRFRAMES; BRIDGES (STRUCTURES); COMPUTER SYSTEMS PROGRAMS; METHODOLOGY; OPTIMIZATION
Imprint And Other Notes: IN: Developments in mechanics. Volume 12 - Midwestern Mechanics Conference, 18th, Iowa City, IA, May 16-18, 1983, Proceedings (A84-49102 24-31). Iowa City, IA, University of Iowa, 1983, p. 345-347.
Availability Source: Other Sources
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