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Nonlinear buckling and postbuckling of a shear-deformable anisotropic laminated cylindrical panel under axial compression |
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| Authors: | Z.?M.?Li author-information" > author-information__contact u-icon-before" > mailto:zmli@sjtu.edu.cn" title=" zmli@sjtu.edu.cn" itemprop=" email" data-track=" click" data-track-action=" Email author" data-track-label=" " >Email author,Y.?X.?Zhao,X.?D.?Chen,W.?R.?Wang |
| Affiliation: | 1.School of Mechanical Engineering and Shanghai Key Lab of Digital Autobody Engineering,Shanghai Jiao Tong University,Shanghai,P. R. China;2.School of Mechanical, Electronic and Control Engineering,Beijing Jiao Tong University,Beijing,P. R. China;3.School of Materials Science and Engineering,Shanghai University,Shanghai,P. R. China |
| Abstract: | The nonlinear buckling and postbuckling of a shear-deformable anisotropic laminated cylindrical panel of finite length is investigated based on a boundary-layer theory for buckling. The layers of the panel are assumed to be linearly elastic. The governing equations are based on Reddy’s higher-order shear deformation theory of shells and include the von Karman-type kinematic nonlinearity and extension/twist, extension/flexure, and flexure/twist couplings. The nonlinear prebuckling deformations and the initial geometric imperfections of the panel are both taken into account. The postbuckling behavior of the panel under axial compression is analyzed. A singular perturbation technique is employed to determine its buckling loads and postbuckling equilibrium paths. The numerical illustrations concern the postbuckling behavior of perfect and imperfect moderately thick anisotropic laminated cylindrical panels with different geometric parameters and stacking sequences. The new finding reveals that there arises a compressive stress along with an associate shear stress and twisting when a moderately thick anisotropic laminated cylindrical panel is subjected to axial compression. |
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