Uncertainty analysis of higher-order sandwich beam using a hybrid stochastic time-domain spectral element method

Sharma, H and Mukherjee, S and Ganguli, R (2020) Uncertainty analysis of higher-order sandwich beam using a hybrid stochastic time-domain spectral element method. In: International Journal of Computational Methods in Engineering Science and Mechanics . (In Press)

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Abstract

A stochastic time-domain spectral element method (STSEM) is applied to sandwich beam structures. STSEM couples the computational efficiencies of the spectral stochastic finite element method and the time-domain spectral element method. A higher-order sandwich panel theory incorporating the core flexibility is considered for the analysis. The material properties are modeled as random fields and represented by the Karhunen-Loéve expansion. The stochastic nodal displacements are expressed using the polynomial chaos expansion, and the expansion coefficients are computed by solving the spectral stochastic finite element equations. The computational efficiency of the proposed method is compared with Monte-Carlo simulation. © 2020 Taylor & Francis Group, LLC.

Item Type:	Journal Article
Publication:	International Journal of Computational Methods in Engineering Science and Mechanics
Publisher:	Taylor and Francis Inc.
Additional Information:	The copyright of this article belongs to Taylor and Francis Inc.
Keywords:	Composite beams and girders; Computation theory; Computational efficiency; Efficiency; Monte Carlo methods; Sandwich structures; Stochastic systems; Uncertainty analysis, Core flexibilities; Expansion coefficients; Nodal displacement; Polynomial chaos expansion; Sandwich panel; Spectral element method; Spectral stochastic finite element method; Stochastic finite elements, Time domain analysis
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	09 Oct 2020 06:12
Last Modified:	09 Oct 2020 06:12
URI:	http://eprints.iisc.ac.in/id/eprint/66450

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