[PDF] A Finite Element Formulation Of Multi Layered Shells For The Analysis Of Laminated Composites eBook

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Page : 0 pages
File Size : 18,23 MB
Release : 1995
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This paper presents a multi-layered/multi-director and shear-deformable finite element formulation of shells for the analysis of composite laminates. The displacement field is assumed continuous across the finite element layers through the composite thickness. The rotation field is, however, layer-wise continuous and is assumed discontinuous across these layers. This kinematic hypothesis results in independent shear deformation of the director associated with each individual layer and thus allows the warping of the composite cross-section. The resulting strain field is discontinuous across the different material sets, thereby creating the provision that the inter-laminar transverse stresses computed from the constitutive equations can be continuous. Numerical results are presented to show the performance of the method.

Author : J. N. Reddy
Publisher : CRC Press
Page : 864 pages
File Size : 24,98 MB
Release : 2003-11-24
Category : Science
ISBN : 9780203502808

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The second edition of this popular text provides complete, detailed coverage of the various theories, analytical solutions, and finite element models of laminated composite plates and shells. The book reflects advances in materials modeling in general and composite materials and structures in particular. It includes a chapter dedicated to the theory and analysis of laminated shells, discussions on smart structures and functionally graded materials, exercises and examples, and chapters that were reorganized from the first edition to improve the clarity of the presentation.

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Page : 0 pages
File Size : 40,4 MB
Release : 1997
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The principal objective of this investigation was to provide a reliable and efficient prototype software for the engineering design and analysis of multilayered composite shells, capable of modeling linear and nonlinear behavior in three dimensions. In addition, it should be capable of assessing the quality of the solution and providing feedback on the basis of which the solution quality can be improved. Its hierarchic structure should allow the selection of models of increasing complexity in an adaptive way, such that the goals of computation are satisfied within the required accuracy and with minimal effort. The project addressed the investigation of a hierarchic sequence of models for multilayered composite shells and their implementation within the framework of the p-version of the finite element method. In the Phase I project, we investigated the use of the hierarchic models for the analysis of bending of laminated (flat) plates. Phase II utilized the results of Phase I to fully assess the problems associated with bending/membrane coupling and curvature, and extend those results to the nonlinear (small- strain, large-deformation) solution methods for laminated shells, where the most significant technological contributions are to be realized.

Author : Wojciech Pietraszkiewicz
Publisher : CRC Press
Page : 600 pages
File Size : 21,11 MB
Release : 2013-09-18
Category : Technology & Engineering
ISBN : 1482229080

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Shells are basic structural elements of modern technology and everyday life. Examples are automobile bodies, water and oil tanks, pipelines, aircraft fuselages, nanotubes, graphene sheets or beer cans. Also nature is full of living shells such as leaves of trees, blooming flowers, seashells, cell membranes, the double helix of DNA or wings of insec

Author : F.Y. Cheng
Publisher : Elsevier
Page : 413 pages
File Size : 41,48 MB
Release : 1999-02-16
Category : Mathematics
ISBN : 0080529496

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The Second Sino-US Symposium Workshop on Recent Advancement of Computational Mechanics in Structural Engineering was held between May 25-28, 1998, in Dalian, China. The objectives were: to share the insights and experiences gained from recent developments in theory and practice; to assess the current state of knowledge in various topic areas of mechanics and computational methods and to identify joint research opportunities; to stimulate future cooperative research and to develop joint efforts in subjects of common needs and interests; to build and to strengthen the long-term bilateral scientific relationship between academic and professional practicing communities.Topics discussed covered the entire field of computational structural mechanics. These topics have advanced broad applications in the engineering practice of modern structural analysis, design and construction of buildings and other structures, and in natural hazard mitigation.

Author : Vladislav Mantic
Publisher : World Scientific
Page : 521 pages
File Size : 33,66 MB
Release : 2013-10-25
Category : Technology & Engineering
ISBN : 178326411X

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This book provides a representative selection of the most relevant, innovative, and useful mathematical methods and models applied to the analysis and characterization of composites and their behaviour on micro-, meso-, and macroscale. It establishes the fundamentals for meaningful and accurate theoretical and computer modelling of these materials in the future. Although the book is primarily concerned with fibre-reinforced composites, which have ever-increasing applications in fields such as aerospace, many of the results presented can be applied to other kinds of composites. The topics covered include: scaling and homogenization procedures in composite structures, thin plate and wave solutions in anisotropic materials, laminated structures, instabilities, fracture and damage analysis of composites, and highly efficient methods for simulation of composites manufacturing. The results presented are useful in the design, fabrication, testing, and industrial applications of composite components and structures. The book is written by well-known experts in different areas of applied mathematics, physics, and composite engineering and is an essential source of reference for graduate and doctoral students, as well as researchers. It is also suitable for non-experts in composites who wish to have an overview of both the mathematical methods and models used in this area and the related open problems requiring further research.

Author : Yu. I. Dimitrienko
Publisher : Springer
Page : 448 pages
File Size : 18,77 MB
Release : 2016-01-14
Category : Science
ISBN : 9401774943

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This pioneering book presents new models for the thermomechanical behavior of composite materials and structures taking into account internal physico-chemical transformations such as thermodecomposition, sublimation and melting at high temperatures (up to 3000 K). It is of great importance for the design of new thermostable materials and for the investigation of reliability and fire safety of composite structures. It also supports the investigation of interaction of composites with laser irradiation and the design of heat-shield systems. Structural methods are presented for calculating the effective mechanical and thermal properties of matrices, fibres and unidirectional, reinforced by dispersed particles and textile composites, in terms of properties of their constituent phases. Useful calculation methods are developed for characteristics such as the rate of thermomechanical erosion of composites under high-speed flow and the heat deformation of composites with account of chemical shrinkage. The author expansively compares modeling results with experimental data, and readers will find unique experimental results on mechanical and thermal properties of composites under temperatures up to 3000 K. Chapters show how the behavior of composite shells under high temperatures is simulated by the finite-element method and so cylindrical and axisymmetric composite shells and composite plates are investigated under local high-temperature heating. The book will be of interest to researchers and to engineers designing composite structures, and invaluable to materials scientists developing advanced performance thermostable materials.

Author : Suong Van Hoa
Publisher : Springer Science & Business Media
Page : 304 pages
File Size : 21,17 MB
Release : 2013-11-27
Category : Technology & Engineering
ISBN : 146155733X

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This book has one single purpose: to present the development of the partial hybrid finite element method for the stress analysis of laminated composite structures. The reason for this presentation is because the authors believe that partial hybrid finite element method is more efficient that the displacement based finite element method for the stress analysis oflaminated composites. In fact, the examples in chapter 5 of this book show that the partial hybrid finite element method is about 5 times more efficient than the displacement based finite element method. Since there is a great need for accurate and efficient calculation of interlaminar stresses for the design using composites, the partial hybrid finite method does provide one possible solution. Hybrid finite method has been in existence since 1964 and a significant amount of work has been done on the topic. However, the authors are not aware of any systematic piece of literature that gives a detailed presentation of the method. Chapters of the displacement finite element method and the evolution 1 and 2 present a sununary of the hybrid finite element method. Hopefully, these two chapters can provide the readers with an appreciation for the difference between the displacement finite element method and the hybrid finite element. It also should prepare the readers for the introduction of partial hybrid finite element method presented in chapter 3.

Author : Antonio J.M. Ferreira
Publisher : Società Editrice Esculapio
Page : 188 pages
File Size : 22,14 MB
Release : 2017-05-25
Category : Technology & Engineering
ISBN : 889385029X

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The use of composite materials has grown exponentially in the last decades and has affected many engineering fields due to their enhanced mechanical properties and improved features with respect to conventional materials. For instance, they are employed in civil engineering (seismic isolators, long-span bridges, vaults), mechanical engineering (turbines, machine components), aerospace and naval engineering (fuselages, boat hulls and sails), automotive engineering (car bodies, tires), and biomechanical engineering (prostheses).Nevertheless, the greater use of composites requires a rapid progress in gaining the needed knowledge to design and manufacture composite structures. Thus, researchers and designers devote their own efforts to develop new analysis techniques, design methodologies, manufacturing procedures, micromechanics approaches, theoretical models, and numerical methods. For these purpose, it is extremely easy to find many recent journal papers, books, and technical notes, focused on the mechanics of composites. In particular, several studies are presented to take advantage of their superior features by varying some typical structural parameters (such as geometry, fiber orientations, volume fraction, structural stiffness, weight, lamination scheme). Therefore, this Conference aims to collect contributions from every part of the globe that can increase the knowledge of composite materials and their applications, by engaging researches and professional engineers and designers from different sectors. The same aims and scopes have been reached by the previous editions of Mechanics of Composites International Conferences (MECHCOMP), which occurred in 2014 at Stony Brook University (USA) and in 2016 at University of Porto (Portugal).