Comparison of Natural Frequencies of Laminates by 3-D Theory, Part Ii: Curved Panels

Chern, Y. C.; Chao, Chun‐Cheih

doi:10.1006/jsvi.1999.2454

Cited by 69 publications

(18 citation statements)

References 38 publications

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“…Mota Soares et al (1995) researched the sensitivity analysis of the optimization of general thin shell structures made of composite materials. Chern and Chao (2000) studied the natural frequencies of laminates in spherical, cylindrical, planed, and curved panel geometries by a three-dimensional theory. They also presented the comparison of natural frequency via a three-dimensional augmented energy variation approach.…”

Section: Laminated Cylindrical Shellsmentioning

confidence: 99%

Maximization of Fundamental Frequency of Laminated Composite Cylindrical Shells by Ant Colony Algorithm

Koide

Luersen

2013

J.Aerosp. Technol. Manag.

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The success in developing modern aerospace systems addresses competitive subjects as optimization, reduced costs, sustainability, environment, weight, and safety. There is an increased demand for lighter materials such as laminated composites. In order to match the demand of aeronautical companies, the shell structures are very important. The dynamic behavior of composite structures is also essential to improve the potential applications of these materials. The knowledge of the dynamic response of the cylindrical shell structures is an important issue in their design, in which the ply thicknesses are often preestablished and the ply orientations are usually restricted to a small set of angles due to manufacturing constraints. Obtaining the best stacking sequence of laminated shell may lead to a problem of combinatorial optimization. As this problem is hard to be solved, several techniques have been developed. Ant colony optimization is a class of heuristic optimization algorithms inspired by the behavior of real ants, related to their ability to find the shortest path between the nest and the food source. Thus, this paper deals with optimal stacking sequence of laminated cylindrical composite shells with the aim of maximizing their fundamental frequency using this approach. The ant colony algorithm was implemented in Matlab platform and was linked to Abaqus academic version to compute the structural response. Cylindrical shells with and without a cutout geometry were studied. Fundamental frequencies were maximized for both cases, and results were presented and discussed.

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Section: Laminated Cylindrical Shellsmentioning

confidence: 99%

Maximization of Fundamental Frequency of Laminated Composite Cylindrical Shells by Ant Colony Algorithm

Koide

Luersen

2013

J.Aerosp. Technol. Manag.

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“…To overcome this difficulty, much work has been done to improve the performance of the traditional finite element approximation (see, for examples, Spilker, 1982;Noor and Burton, 1990b;Reddy, 1993;Reddy, 1993, 1996). Other works in this area include those published by Cheung and Wu (1972) , Noor and Peters (1989), Beakou and Touratier (I 993), Huang and Dasgupta (1995) and Chern and Chao (2000).…”

Section: Three-dimensional Numerical Modelling Of Laminated Compositementioning

confidence: 99%

Laminated Composite Plates and Shells

Ye¹

2003

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“…In general, the 2D conventional shell theory is based on the classical shell theory, the first-order shear deformation theory, or a higher-order shear deformation theory. A good survey as well as a comparison among the different deformation theories is presented by Chern and Chao (2000). They also developed a 3D-consistent higher-order shear deformation theory, which satisfies the boundary conditions and interlaminar continuity of layer displacements and transverse stresses.…”

Section: Introductionmentioning

confidence: 98%

Dynamic analysis of a spinning composite “deep” hyperbolic coupling

Ghoneim

2008

International Journal of Solids and Structures

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a b s t r a c tA dynamic analysis of a ''deep" hyperbolic composite coupling is presented. A model is developed based on ''shell/beam" assumptions, the energy approach, and the application of the extended Lagrange's Equations. The mathematical model is solved, using the finite element method, to study the effect of the minimum diameter of a specific ''deep" coupling on its dynamic characteristics. The results of the developed finite element program are compared with the corresponding 3D-ANSYS ones. The effect of the spinning speed is also investigated. Results indicate that the developed model is very accurate in predicting the axial and meridional/tangential natural frequencies. The model, however, over predicts the flexural natural frequency. The model also successfully captures the branching phenomenon of the flexural natural frequency exhibited with spinning.

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Comparison of Natural Frequencies of Laminates by 3-D Theory, Part Ii: Curved Panels

Cited by 69 publications

References 38 publications

Maximization of Fundamental Frequency of Laminated Composite Cylindrical Shells by Ant Colony Algorithm

Maximization of Fundamental Frequency of Laminated Composite Cylindrical Shells by Ant Colony Algorithm

Laminated Composite Plates and Shells

Dynamic analysis of a spinning composite “deep” hyperbolic coupling

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