Buckling and stress-competitive failure analyses of composite laminated cylindrical shell under axial compression and torsional loads

2021 ◽  
Vol 255 ◽  
pp. 112977
Author(s):  
W.M. Mahdy ◽  
Libin Zhao ◽  
Fengrui Liu ◽  
Rong Pian ◽  
Huiping Wang ◽  
...  
Keyword(s):  
Cylindrical Shell ◽  
Axial Compression ◽  
Torsional Loads ◽  
Composite Laminated Cylindrical Shell ◽  
Laminated Cylindrical Shell

scholarly journals Free Vibration Analysis of Closed Moderately Thick Cross-Ply Composite Laminated Cylindrical Shell with Arbitrary Boundary Conditions

Materials ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 884 ◽  
Author(s):  
Dongyan Shi ◽  
Dongze He ◽  
Qingshan Wang ◽  
Chunlong Ma ◽  
Haisheng Shu
Keyword(s):  
Cylindrical Shell ◽  
Free Vibration ◽  
Boundary Conditions ◽  
Governing Equation ◽  
Present Method ◽  
Composite Shell ◽  
Arbitrary Boundary ◽  
Arbitrary Boundary Conditions ◽  
Composite Laminated Cylindrical Shell ◽  
Laminated Cylindrical Shell

A semi-analytic method is adopted to analyze the free vibration characteristics of the moderately thick composite laminated cylindrical shell with arbitrary classical and elastic boundary conditions. By Hamilton’s principle and first-order shear deformation theory, the governing equation of the composite shell can be established. The displacement variables are transformed into the wave function forms to ensure the correctness of the governing equation. Based on the kinetic relationship between the displacement variables and force resultants, the final equation associated with arbitrary boundary conditions is established. The dichotomy method is conducted to calculate the natural frequencies of the composite shell. For verifying the correctness of the present method, the results by the present method are compared with those in the pieces of literatures with various boundary conditions. Furthermore, some numerical examples are calculated to investigate the effect of several parameters on the composite shell, such as length to radius ratios, thickness to radius ratios and elastic restrained constants.

Stability and Vibration Behavior of Composite Cylindrical Shell Panels Under Axial Compression and Secondary Loads

2008 ◽  
Vol 75 (4) ◽  
Author(s):  
J. Girish ◽  
L. S. Ramachandra
Keyword(s):  
Cylindrical Shell ◽  
Axial Compression ◽  
Shell Theory ◽  
Nonlinear Partial Differential Equations ◽  
Static Response ◽  
Geometric Imperfection ◽  
Vibration Behavior ◽  
Linear Eigenvalue Problem ◽  
Nonlinear Equilibrium ◽  
Laminated Cylindrical Shell

The nonlinear static response and vibration behavior of cross-ply laminated cylindrical shell panels subjected to axial compression combined with other secondary loading are examined. The shell theory adopted in the present case is based on a higher-order shallow shell theory, includes geometric imperfection and von Kármán-type geometric nonlinearity. The solutions to the governing nonlinear partial differential equations are sought using the multiterm Galerkin technique. The nonlinear equilibrium paths through limit points and bifurcation points are traced using the Newton–Raphson method coupled with the Riks approach. The free vibration frequencies of post-buckled cylindrical panels about the static equilibrium state are reported by solving the associated linear eigenvalue problem. Results are presented for simply supported cross-ply laminated cylindrical shell panels, which illustrates the influence of initial geometric imperfection, temperature field, lateral pressure loads, and mechanical edge loads on the static response and vibration behavior of the shell panel.

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