A boundary layer theory for buckling and postbuckling of anisotropic laminated thin shells is extended to shear deformable stiffened anisotropic laminated shells. A postbuckling behavior is investigated for a shear deformable anisotropic laminated cylindrical shell with geodesical stiffener of finite length subjected to lateral or hydrostatic pressure. The material of each layer of the shell is assumed to be linearly elastic, anisotropic, and fiber-reinforced. The governing equations are based on a higher-order shear deformation shell theory with von Kármán–Donnell-type of kinematic nonlinearity and including the extension/twist, extension/flexural, and flexural/twist couplings. The nonlinear prebuckling deformations and initial geometric imperfections of the shell are both taken into account. A singular perturbation technique is employed to determine the buckling pressure and postbuckling equilibrium paths. The numerical illustrations concern the postbuckling response of perfect and imperfect, moderately thick, geodesically stiffened shells, axial and ring stiffened shells, and unstiffened shells with different values of shell parameters and stacking sequence. The results confirm that there exists a circumferential stress along with an associate shear stress when the shell is subjected to lateral pressure. The postbuckling equilibrium path is stable for the moderately long shell under external pressure and the shell structure is virtually imperfection-insensitive.
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April 2011
Research Papers
Postbuckling of Shear Deformable Geodesically Stiffened Anisotropic Laminated Cylindrical Shell Under External Pressure
Zhi-Min Li,
Zhi-Min Li
School of Mechanical Engineering and State Key Laboratory of Mechanical System and Vibration,
e-mail: zmli@sjtu.edu.cn
Shanghai Jiao Tong University
, Shanghai 200240, China
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Zhong-Qin Lin,
Zhong-Qin Lin
School of Mechanical Engineering and State Key Laboratory of Mechanical System and Vibration,
Shanghai Jiao Tong University
, Shanghai 200240, China
Search for other works by this author on:
Guan-Long Chen
Guan-Long Chen
School of Mechanical Engineering and State Key Laboratory of Mechanical System and Vibration,
Shanghai Jiao Tong University
, Shanghai 200240, China
Search for other works by this author on:
Zhi-Min Li
School of Mechanical Engineering and State Key Laboratory of Mechanical System and Vibration,
Shanghai Jiao Tong University
, Shanghai 200240, Chinae-mail: zmli@sjtu.edu.cn
Zhong-Qin Lin
School of Mechanical Engineering and State Key Laboratory of Mechanical System and Vibration,
Shanghai Jiao Tong University
, Shanghai 200240, China
Guan-Long Chen
School of Mechanical Engineering and State Key Laboratory of Mechanical System and Vibration,
Shanghai Jiao Tong University
, Shanghai 200240, ChinaJ. Pressure Vessel Technol. Apr 2011, 133(2): 021204 (13 pages)
Published Online: February 11, 2011
Article history
Received:
December 22, 2009
Revised:
April 22, 2010
Online:
February 11, 2011
Published:
February 11, 2011
Citation
Li, Z., Lin, Z., and Chen, G. (February 11, 2011). "Postbuckling of Shear Deformable Geodesically Stiffened Anisotropic Laminated Cylindrical Shell Under External Pressure." ASME. J. Pressure Vessel Technol. April 2011; 133(2): 021204. https://doi.org/10.1115/1.4001742
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