论文类型：期刊论文
发表刊物：INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
收录刊物：Scopus、EI、SCIE
卷号：104
页面范围：190-199
ISSN号：0020-7403
关键字：Isogeometric analysis; Composite beam; Buckling analysis; Critical buckling load; Fiber reinforced
摘要：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.