Imperfection sensitivity of multilayered composite shells

2009 ◽  
pp. 137-140
Author(s):  
A Sabik ◽  
I Kreja
Keyword(s):  
Composite Shells ◽  
Imperfection Sensitivity ◽  
Multilayered Composite

Numerical modeling of processes of failure of multilayered composite shells

1989 ◽  
Vol 25 (3) ◽  
pp. 337-343 ◽  
Author(s):  
A. S. Sakharov ◽  
A. V. Gondlyakh ◽  
S. L. Mel'nikov ◽  
A. N. Snitko
Keyword(s):  
Numerical Modeling ◽  
Composite Shells ◽  
Multilayered Composite

Thermoelastic equilibrium of multilayered composite shells

1989 ◽  
Vol 21 (6) ◽  
pp. 784-789 ◽  
Author(s):  
A. G. Bondar' ◽  
A. O. Rasskazov ◽  
V. I. Kozlov ◽  
A. G. Bondarskii
Keyword(s):  
Composite Shells ◽  
Thermoelastic Equilibrium ◽  
Multilayered Composite

Assessment of Computational Models for Multilayered Composite Shells

1990 ◽  
Vol 43 (4) ◽  
pp. 67-97 ◽  
Author(s):  
Ahmed K. Noor ◽  
W. Scott Burton
Keyword(s):  
Shear Deformation ◽  
Strain Energy ◽  
Computational Models ◽  
Three Dimensional ◽  
Linear Displacement ◽  
Two Dimensional ◽  
Composite Shells ◽  
Response Characteristics ◽  
Multilayered Composite ◽  
Shear Deformation Theories

A review is made of the different approaches used for modeling multilayered composite shells. Discussion focuses on different approaches for developing two-dimensional shear deformation theories; classification of two-dimensional theories based on introducing plausible displacement, strain and/or stress assumptions in the thickness direction; first-order shear deformation theories based on linear displacement assumptions in the thickness coordinate; and efficient computational strategies for anisotropic composite shells. Extensive numerical results are presented showing the effects of variation in the lamination and geometric parameters of simply supported composite cylinders on the accuracy of the static and vibrational responses predicted by eight different modeling approaches (based on two-dimensional shear deformation theories). The standard of comparison is taken to be the exact three-dimensional elasticity solutions. The quantities compared include both the gross response characteristics (eg, vibration frequencies and strain energy components); and detailed, through-the-thickness distributions of displacements, stresses, and strain energy densities. Some of the future directions for research on the modeling of multilayered composite shells are outlined.

Limiting state of multilayered composite shells

1989 ◽  
Vol 24 (4) ◽  
pp. 553-557 ◽  
Author(s):  
I. G. Teregulov ◽  
�. S. Sibgatullin ◽  
O. A. Markin
Keyword(s):  
Composite Shells ◽  
Limiting State ◽  
Multilayered Composite

scholarly journals Material Design for Optimal Postbuckling Behaviour of Composite Shells

Materials ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1665
Author(s):  
Domenico Magisano ◽  
Francesco Liguori ◽  
Antonio Madeo ◽  
Leonardo Leonetti ◽  
Giovanni Garcea
Keyword(s):  
Material Design ◽  
Computational Design ◽  
Discrete Models ◽  
Composite Shells ◽  
Imperfection Sensitivity ◽  
Thin Walled Structures ◽  
Solution Methods ◽  
Geometrical Imperfections ◽  
Thin Walled ◽  
Optimal Material

Lightweight thin-walled structures are crucial for many engineering applications. Advanced manufacturing methods are enabling the realization of composite materials with spatially varying material properties. Variable angle tow fibre composites are a representative example, but also nanocomposites are opening new interesting possibilities. Taking advantage of these tunable materials requires the development of computational design methods. The failure of such structures is often dominated by buckling and can be very sensitive to material configuration and geometrical imperfections. This work is a review of the recent computational developments concerning the optimisation of the response of composite thin-walled structures prone to buckling, showing how baseline products with unstable behaviour can be transformed in stable ones operating safely in the post-buckling range. Four main aspects are discussed: mechanical and discrete models for composite shells, material parametrization and objective function definition, solution methods for tracing the load-displacement path and assessing the imperfection sensitivity, structural optimisation algorithms. A numerical example of optimal material design for a curved panel is also illustrated.

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