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Thermomechanical postbuckling of composite laminated cylindrical shells with local geometric imperfections

✍ Scribed by Hui-Shen Shen

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
546 KB
Volume
36
Category
Article
ISSN
0020-7683

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✦ Synopsis

The e}ect of local geometric imperfections on the buckling and postbuckling of composite laminated cylindrical shells subjected to combined axial compression and uniform temperature loading was investigated[ The two cases of compressive postbuckling of initially heated shells and of thermal postbuckling of initially compressed shells are considered[ The formulations are based on a boundary layer theory of shell buckling\ which includes the e}ects of the nonlinear prebuckling deformation\ the nonlinear large de~ection in the postbuckling range and the initial geometric imperfection of the shell[ The analysis uses a singular per! turbation technique to determine buckling loads and postbuckling equilibrium paths[ Numerical examples are presented that relate to the performances of cross!ply laminated cylindrical shells with or without initial local imperfections\ from which results for isotropic cylindrical shells follow as a limiting case[ Typical results are presented in dimensionless graphical form for di}erent parameters and loading conditions[

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