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Record 40 of 5089
Multiobjective optimization in structural design with uncertain parameters and stochastic processes
Author and Affiliation:
Rao, S. S.(San Diego State University, San Diego, CA, United States)
Abstract: The application of multiobjective optimization techniques to structural design problems involving uncertain parameters and random processes is studied. The design of a cantilever beam with a tip mass subjected to a stochastic base excitation is considered for illustration. Several of the problem parameters are assumed to be random variables and the structural mass, fatigue damage, and negative of natural frequency of vibration are considered for minimization. The solution of this three-criteria design problem is found by using global criterion, utility function, game theory, goal programming, goal attainment, bounded objective function, and lexicographic methods. It is observed that the game theory approach is superior in finding a better optimum solution, assuming the proper balance of the various objective functions. The procedures used in the present investigation are expected to be useful in the design of general dynamic systems involving uncertain parameters, stochastic process, and multiple objectives.
Publication Date: Nov 01, 1984
Document ID:
19850030572
(Acquired Nov 28, 1995)
Accession Number: 85A12723
Subject Category: SYSTEMS ANALYSIS
Document Type: Journal Article
Publication Information: AIAA Journal (ISSN 0001-1452); 22; 1670-167
Publisher Information: United States
Contract/Grant/Task Num: NAG1-275
Financial Sponsor: NASA; United States
Organization Source: San Diego State Univ.; San Diego, CA, United States
Description: 9p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: COMPUTER AIDED DESIGN; DYNAMICAL SYSTEMS; RANDOM VARIABLES; STOCHASTIC PROCESSES; STRUCTURAL DESIGN CRITERIA; CANTILEVER BEAMS; MASS DISTRIBUTION; OPTIMIZATION; RESONANT FREQUENCIES; WHITE NOISE
Imprint And Other Notes: AIAA Journal (ISSN 0001-1452), vol. 22, Nov. 1984, p. 1670-1678.
Availability Source: Other Sources
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