Geometrically nonlinear deflection and stress analysis of skew sandwich shell panel using higher-order theory

2018 ◽  
Vol 35 (2) ◽  
pp. 467-485 ◽  
Author(s):  
Pankaj V. Katariya ◽  
Chetan K. Hirwani ◽  
Subrata K. Panda
Keyword(s):  
Stress Analysis ◽  
Order Theory ◽  
Higher Order ◽  
Geometrically Nonlinear ◽  
Sandwich Shell ◽  
Shell Panel ◽  
Higher Order Theory

3-D Stress Analysis of Cross-Ply Laminated Composites

1994 ◽  
Vol 116 (3) ◽  
pp. 240-249 ◽  
Author(s):  
C. C. Chao ◽  
T. P. Tung ◽  
H. H. Li
Keyword(s):  
Stress Analysis ◽  
Double Fourier Series ◽  
Order Theory ◽  
Higher Order ◽  
Displacement Fields ◽  
Individual Layer ◽  
Ritz Procedure ◽  
Transverse Stresses ◽  
Higher Order Theory ◽  
Cubic Polynomials

A consistent higher-order theory is presented for static deformation and stress analysis of cross-ply thick laminates. Emphasis is placed on consistence with the 3-D boundary conditions and interlaminar stress continuity, exterior and interior, respectively, to the simply supported rectangular plate. All edges and lateral surfaces are considered stress-free, while surface traction and applied load equilibrium is maintained in the loading area. Individual layer displacement fields are expressed in terms of in-plane double Fourier series and cubic polynomials in thickness coordinates with continuity of interlaminar displacements and transverse stresses observed. A system of equations is derived with all these necessary conditions satisfied by means of the higher-order terms of the displacement fields in the extended Rayleigh-Ritz procedure. 3-D displacement and stress components, as compared well with exact solution cases available, can be found throughout the plate for 3-D analysis of localized damage. Thickness shrinking is noted with no mid-surface symmetry of stress distribution.

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