Isogeometric finite element method for buckling analysis of generally laminated composite beams with different boundary conditions

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Indexed by:Journal Papers

Date of Publication:2015-12-01

Journal:INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES

Included Journals:SCIE、EI、Scopus

Volume:104

Page Number:190-199

ISSN No.:0020-7403

Key Words:Isogeometric analysis; Composite beam; Buckling analysis; Critical buckling load; Fiber reinforced

Abstract:In this paper, isogeometric finite element method (IGA) based on Non-Uniform Rational B-splines (NURBS) basis function is applied for the buckling analysis of generally laminated composite beam with various boundary conditions. A beam element with four degrees of freedom per control point is investigated, which has considered the bending-torsion deformation. The model for the buckling analysis of laminated composite beam is detailed by the principle of virtual work. Several numerical examples of symmetric and anti-symmetric, cross-ply and angle-ply composite beam are performed. Numerical results of critical buckling loads and mode shapes are presented, and compared with other available results to show the efficiency and accuracy of the present IGA approach. In addition, the impacts of the modulus ratios, slenderness ratios, stacking sequence and the fiber angle, especially the Poisson effect on the critical buckling loads of composite beam are clearly demonstrated. It should be noted the results with the Poisson effect neglected are only suit for the cross-ply composite beams. And the benchmark solutions presented in this work can be used as a reference for the buckling analysis of laminated composite beams in future. (C) 2015 Elsevier Ltd. All rights reserved.

Date of Publication:2015-12-01