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Vibration and buckling behaviours of thin-walled composite and functionally graded sandwich I-beams

journal contribution
posted on 02.12.2020, 04:45 by ND Nguyen, TK Nguyen, Thuc Vo, TN Nguyen, S Lee
© 2019 Elsevier Ltd The paper proposes a Ritz-type solution for free vibration and buckling analysis thin-walled composite and functionally graded sandwich I-beams. The variation of material through the thickness of functionally graded beams follows the power-law distribution. The displacement field is based on the first-order shear deformation theory, which can reduce to non-shear deformable one. The governing equations of motion are derived from Lagrange's equations. Ritz method is used to obtain the natural frequencies and critical buckling loads of thin-walled beams for both non-shear deformable and shear deformable theory. Numerical results are compared to those from previous works and investigate the effects of fiber angle, material distribution, span-to-height's ratio, and shear deformation on the critical buckling loads and natural frequencies of thin-walled I-beams for various boundary conditions.

History

Publication Date

01/06/2019

Journal

Composites Part B: Engineering

Volume

166

Pagination

15p. (p. 414-427)

Publisher

Elsevier

ISSN

1359-8368

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