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Steel and Composite Structures
  Volume 25, Number 3, October30 2017 , pages 337-346

Bending performance of laminated sandwich shells in hyperbolic paraboloidal form
Veysel Alankaya and Cengiz Erdönmez

    Sandwich shells made of composite materials are the main focus on recent literature parallel to the requirements of industry. They are commonly chosen for the modern engineering applications which require moderate strength to weight ratio without dependence on conventional manufacturing techniques. The investigations on hyperbolic paraboloidal formed sandwich composite shells are limited in the literature contrary to shells that have a number of studies, consisting of doubly curved surfaces, arbitrary boundaries and laminations. Because of the lack of contributive data in the literature, the aim of this study is to present the effects of curvature on hyperbolic paraboloidal formed, layered sandwich composite surfaces that have arbitrary boundary conditions. Analytical solution methodology for the analyses of stresses and deformations is based on Third Order Shear Deformation Theory (TSDT). Double Fourier series, which are specialized for boundary discontinuity, are used to solve highly coupled linear partial differential equations. Numerical solutions showing the effects of shell geometry are presented to provide benchmark results.
Key Words
    sandwich composites; hyperbolic paraboloidal shell; boundary-discontinuity; fourier series
Veysel Alankaya : Department of Naval Architecture, Turkish Naval Academy, Tuzla, 34942 Istanbul, Turkey
Cengiz Erdönmez: Department of Mathematics, Turkish Naval Academy, Tuzla, 34942 Istanbul, Turkey

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