La Trobe

File(s) under embargo

Reason: Publisher requirement

740

days

9

hours

until file(s) become available

An improved shear deformable theory for bending and buckling response of thin-walled FG sandwich I-beams resting on the elastic foundation

journal contribution
posted on 06.11.2020, 04:11 by Ngoc-Duong Nguyen, Thuc Vo, TK Nguyen
© 2020 Elsevier Ltd This paper proposes an improved first-order beam theory by separation of variables for bending and buckling analysis of thin-walled functionally graded (FG) sandwich I-beams resting on a two-parameter elastic foundation. By dividing the displacements into bending and shear parts, this model can produce the deflections for both two cases with and without shear effect. The mechanical properties of beams based on the power law distribution of volume fraction of ceramic or metal. Governing equations are established from Lagrange's equations. The new Ritz's approximation functions, which are combined between orthogonal polynomial and exponential functions, are proposed to solve problem. The deflections and critical buckling loads of thin-walled FG sandwich I-beams are presented and compared with those available literature to verify the present theory. The effects of material distribution, boundary conditions, length-to-height ratio, shear deformation and foundation parameters on the results are investigated in detail.

History

Publication Date

15/12/2020

Journal

Composite Structures

Volume

254

Article Number

112823

Pagination

17p. (p. 1-17)

Publisher

Elsevier

ISSN

0263-8223

Rights Statement

The Author reserves all moral rights over the deposited text and must be credited if any re-use occurs. Documents deposited in OPAL are the Open Access versions of outputs published elsewhere. Changes resulting from the publishing process may therefore not be reflected in this document. The final published version may be obtained via the publisher’s DOI. Please note that additional copyright and access restrictions may apply to the published version.

Exports

Logo branding

Keywords

Exports