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Design sensitivity analysis using EAL. Part 1: Conventional design parametersA numerical implementation of design sensitivity analysis of builtup structures is presented, using the versatility and convenience of an existing finite element structural analysis code and its database management system. The finite element code used in the implemenatation presented is the Engineering Analysis Language (EAL), which is based on a hybrid method of analysis. It was shown that design sensitivity computations can be carried out using the database management system of EAL, without writing a separate program and a separate database. Conventional (sizing) design parameters such as cross-sectional area of beams or thickness of plates and plane elastic solid components are considered. Compliance, displacement, and stress functionals are considered as performance criteria. The method presented is being extended to implement shape design sensitivity analysis using a domain method and a design component method.
Document ID
19870016939
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Dopker, B. (Iowa Univ. Iowa City, IA, United States)
Choi, Kyung K. (Iowa Univ. Iowa City, IA, United States)
Lee, J. (Iowa Univ. Iowa City, IA, United States)
Date Acquired
September 5, 2013
Publication Date
August 1, 1986
Subject Category
Structural Mechanics
Report/Patent Number
NASA-CR-181097
TR-86-2-PT-1-REV
NAS 1.26:181097
Accession Number
87N26372
Funding Number(s)
CONTRACT_GRANT: NAG1-215
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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