MLSDQ based on RBFs for the free vibrations of laminated composite doubly-curved shells

2016 ◽  
Vol 99 ◽  
pp. 30-47 ◽  
Author(s):  
Francesco Tornabene ◽  
Nicholas Fantuzzi ◽  
Michele Bacciocchi ◽  
Ana M.A. Neves ◽  
Antonio J.M. Ferreira
Keyword(s):  
Laminated Composite ◽  
Free Vibrations ◽  
Doubly Curved Shells ◽  
Doubly Curved

Nonlinear Impact Analysis of Laminated Cylindrical and Doubly Curved Shells

1995 ◽  
Vol 29 (16) ◽  
pp. 2160-2179 ◽  
Author(s):  
K. Chandrashekhara ◽  
T. Schroeder
Keyword(s):  
Impact Analysis ◽  
Large Deflection ◽  
Laminated Composite ◽  
Element Model ◽  
Hertzian Contact ◽  
Doubly Curved Shells ◽  
Hertzian Contact Law ◽  
Center Deflection ◽  
Doubly Curved ◽  
Shell Geometry

The nonlinear impact response of laminated composite cylindrical and doubly curved shells is analyzed using a modified Hertzian contact law. A finite element model is developed based on Sander's shell theory and includes shear deformation effects and nonlinearity due to large deflection. A nine noded isoparametric quadrilateral element is used to model the curved shell. The nonlinear time dependent equations are solved using an iterative scheme and Newmark's method. Numerical results for the contact force and center deflection histories are presented for various impactor conditions, shell geometry and boundary conditions.

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