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.
Based on 15 years of composites manufacturing instruction, the Principles of the Manufacturing of Composite Materials is the first text to offer both a practical and analytic approach to composite manufacturing processes. It ties together key tools for analyzing the mechanics of composites with the processes whereby composite products are fabricated, whether by hand lay-up or through automated processes. The book outlines the principles of chemistry, physics, materials science and engineering and shows how these are connected to the design and production of a variety of composites, primarily polymeric. It thus provides analytic, quantitative tools to answer the questions of why certain materials are linked with specific processes, and why products are manufactured by one process rather than another. All phases of matrix material formation are explained, as are practical design details for fabrics, autoclaving, filament winding, pultrusion, liquid composite molding, hand techniques, joints and joint bonding, and more. A special section is devoted to nanocomposites. The book includes exercises for university students and practitioners.
This book contains technical papers, presented at the third joint Canada-Japan workshop on Composites held in Japan in 2000, on topics, including smart composites, composites in civil construction, toughened composites, textile composites, braided composites, and thermoplastic composites.
While this proceedings volume deals primarily with the conventional areas of metal, ceramic, and polymer composites for civil construction, several of the papers report on new developments in the emerging fields of wood and nanocomposites. The 63 papers from the September 2002 workshop includes the further integration of the fabrication and function processes, aspects of the scale of components which improve the competitive position of composites relative to conventional materials and the exploitation of new types of composite such as nanocomposites which exploit a variety of new length scales to achieve their functionality. This also gives rise to multifunctional composites which have attributes other than structural properties. In this talk these aspects of the future of composites will be explored and illustrated.
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