Results 181 to 190 of about 508 (224)
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Design and optimization of composite sub-stiffened panels
Composite Structures, 2020Abstract This study concerns the buckling and post-buckling performance of composite stiffened panels with sub-stiffening structure subject to compression. The buckling response of the composite stiffened panel is first predicted and verified by experimental data available from the literature.
Yaoyao Ye +4 more
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Stiffened Composite Panels with a Stress Concentrator Under in-Plane Compression
International Applied Mechanics, 2002The paper deals with the investigation of the in-plane compressive strength of thin-shelled stiffened composite panels with stress concentrators. The authors discuss possible in-plane failure mechanisms. The obtained results are compared with the experimental data.
Zhuk, Ya. A. +2 more
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Vibrations of Stiffened Composite Panels With Smart Materials
Journal of Vibration and Acoustics, 2004A numerical study of the use of electrorheological (ER) fluids and piezoelectric (PZT) actuators to control random vibrations of stiffened composite panels is presented. Active control of stiffness and damping is provided by the ER fluids and direct feedback control is provided by the PZT’s.
Kevin C. Poulin, Rimas Vaicaitis
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Buckling analysis of stiffened composite curved panels
Materials Today: Proceedings, 2020Abstract The focus of this study is to analyze the behaviour of a stiffened composite panel. Two different curved panels with ‘Z’ section and angle section stiffeners are used. Stiffeners are single moulded with the panels instead of fixing and it is used to minimize the deformation. This configuration is used to avoid the de-lamination of stiffeners
E.S. Elumalai +7 more
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Cost and Performance Optimization of Composite Stiffened Panels
2005In the present paper, we attempt a novel optimization strategy of composite stiffened panels. The method is based on genetic algorithms and is oriented towards the satisfaction of minimum cost criteria. In order to accomplish this task, minimum weight solutions satisfying additional (constraint) requirements are identified: some minimum weight ...
RICCIO, Aniello +3 more
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A BENCHMARK EXAMPLE FOR COLLAPSE ANALYSIS OF STIFFENED COMPOSITE PANELS
International Journal of Structural Stability and Dynamics, 2010Eight different finite element implementations used by the partners within the COCOMAT consortium are employed to simulate the behavior of curved stiffened composite panels loaded in compression. The aim is to define a suitable benchmark example and compare the abilities of the different finite element codes to simulate the structural behavior in the ...
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Manufacture of Composite Panels with J-Shape Stiffeners
Materials and Manufacturing Processes, 1995Abstract The use of composite materials in primary structure of aircraft is becoming more common. Stiffened composite panels have been designed for a variety of load carrying conditions in aircraft. In this, study, manufacturing techniques for stiffened composite panels were reviewed and discussed.
F. Elaldi, S. Lee, R. F. Scott
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Optimal Design of Grid-Stiffened Composite Panels
Journal of Aircraft, 1998A design strategy for optimal design of composite grid-stiffened panels subjected to global and local buckling constraints is developed using a discrete optimizer. An improved smeared stiffener theory is used for the global buckling analysis. Local buckling of skin segments is assessed using a Rayleigh-Ritz method that accounts for material anisotropy ...
Navin Jaunky +2 more
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Predicting impact damage of composite stiffened panels
The Aeronautical Journal, 2000AbstractThis paper addresses the problem of the complex nature of low velocity impact damage in fabricated structures made of laminated carbon-epoxy composites. The structures chosen are stiffened compression panels since these are the most vulnerable to delamination and debonding.
G. A. O. Davies, X. Zhang
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Weight functions for composite repairs to stiffened panels
Engineering Failure Analysis, 2004Abstract This paper presents a weight function technique for calculating the stress intensity factors for composite repairs to cracks emanating from an internal notch, corrosion blend out, or a free edge under arbitrary loading in rib stiffened panels. The predictions are compared with both finite element and experimental values.
R. Jones, W.K. Chiu, I.H. Marshall
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