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Hybrid probabilistic and convex modeling of excitation and response of periodic structures

Title: Hybrid probabilistic and convex modeling of excitation and response of periodic structures.
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Name(s): Zhu, L. P., author
Elishakoff, Isaac, author
Type of Resource: text
Genre: Article
Date Issued: 1996
Summary: In this paper, a periodic finite-span beam subjected to the stochastic acoustic pressure with bounded parameters is investigated. Uncertainty parameters exist in this acoustic excitation due to the deviation or imperfection. First, a finite-span beams subjected to the random acoustic pressure field are studied, the exact analytic forms of the cross-spectral density of both the transverse displacement and the bending moment responses of the structure are formulated. The combined probabilistic and convex modeling of acoustic excitation appears to be most suitable, since there is an insufficient information available on the acoustic excitation parameters, to justify the totally probabilitic analysis. Specifically, we postulate that the uncertainty parameters in the acoustic loading belong to a bounded, convex set. In the special case when this convex set is an ellipsoid, closed form solutions are obtained for the most and least favorable mean square responses of both the transverse displacement and bending moment of the structure. Several finite-span beams are exemplified to gain insight into proposal methodology.
Identifier: 10.1155/S1024123X96000282 (doi), http://www.hindawi.com/journals/mpe/1996/237632/abs/ (uri), FAUIR000090 (IID)
Persistent Link to This Record: http://purl.flvc.org/fau/fd/FAUIR000090
Use and Reproduction: publisher
Host Institution: FAU
Is Part Of: Mathematical Problems in Engineering.
1024-123X