Vibration and buckling behaviours of thin-walled composite and functionally graded sandwich I-beams. (1st June 2019)

• Record Type: Journal Article
• Authors: Nguyen, Ngoc-Duong; Nguyen, Trung-Kien; Vo, Thuc P.; Nguyen, Thien-Nhan; Lee, Seunghye
• Is Part Of: Composites. Number 166(2019)
• Page Start: 414
• Page End: 427
• Publication Date: 2019-06-01
• Subjects: Ritz method -- Vibration -- Buckling -- Thin-walled composite I-Beams -- Thin-walled functionally graded sandwich I-Beams; Composite materials -- Periodicals; Materials science -- Periodicals; Composite materials; Periodicals; Electronic journals; 620.118
• DOI: 10.1016/j.compositesb.2019.02.033
• Languages: English
• ISSNs: 1359-8368

Abstract

Abstract: 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.