Nonlinear dynamic analysis of tapered sandwich plates with multi-layered faces subjected to air blast loading

Sedat Süsler, Halit S. Türkmen*, Zafer Kazancı

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

The nonlinear dynamic behavior of simply supported tapered sandwich plates subjected to air blast loading is investigated theoretically and numerically. The plate is supposed to have both tapered core and tapered laminated face sheets and be subjected to uniform air blast load. The theory is based on a sandwich plate theory, which includes von Kármán large deformation effects, in-plane stiffnesses, inertias and shear deformations. The sandwich plate theory for plates with constant thickness which have one-layered face sheets found in the literature is developed to analyze the tapered sandwich plates with multi-layered face sheets. The equations of motion are derived by the use of the virtual work principle. Approximate solution functions are assumed for the space domain and substituted into the equations. The Galerkin method is used to obtain the nonlinear differential equations in the time domain. The finite difference method is applied to solve the system of coupled nonlinear equations. The tapered sandwich plate subjected to air blast load is also modelled by using the finite element method. The displacement–time and strain–time histories are obtained. The theoretical results are compared with finite element results and are found to be in an agreement.

Original languageEnglish
Pages (from-to)429-451
Number of pages23
JournalInternational Journal of Mechanics and Materials in Design
Volume13
Issue number3
DOIs
Publication statusPublished - 1 Sept 2017

Bibliographical note

Publisher Copyright:
© 2016, Springer Science+Business Media Dordrecht.

Funding

Support for this work has been provided by Istanbul Technical University research fund.

FundersFunder number
Istanbul Teknik Üniversitesi

    Keywords

    • Air blast load
    • Large deflection
    • Nonlinear analysis
    • Tapered sandwich plate
    • Variable thickness

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