Date of Award
Spring 1992
Document Type
Thesis
Degree Name
Master of Science (MS)
Department
Mechanical & Aerospace Engineering
Program/Concentration
Engineering Mechanics
Committee Director
Gene W. Hou
Committee Member
Duc Nguyen
Committee Member
Thomas Alberts
Call Number for Print
Special Collections; LD4331.E57G46
Abstract
A model updating technique is developed with the intent of providing an efficient means of improving the accuracy of the modelling of the vibrational qualities of a large, flexible structure as it undergoes an integrated controls-structures design optimization. The proposed technique utilizes eigenvalue/eigenvector sensitivity information, two different model reduction methods which assign weights of importance to the vibrational modes of the structure, and modal switching based upon the modal weights determined by the model reduction methods. Issues associated with the numerical implementation of the proposed technique, such as discontinuities induced by modal switching, are also addressed.
The proposed model updating technique is applied to a numerical model of a laboratory structure at NASA Langley Research Center which is used to represent a large, flexible space structure. The application of model updating within a controls-structures integrated design optimization environment is shown to result in an improvement in the accuracy of the modelling of the vibrational characteristics of the structure, and for this particular problem, results in a lighter, more stable structure.
Rights
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DOI
10.25777/8gt9-k696
Recommended Citation
Georges, Angela.
"Development of a Model Updating Technique for Controls-Structures Integrated Design Optimization"
(1992). Master of Science (MS), Thesis, Mechanical & Aerospace Engineering, Old Dominion University, DOI: 10.25777/8gt9-k696
https://digitalcommons.odu.edu/mae_etds/506