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Optimal Design Of Variable Stiffness Fiber Reinforced Composites Using Cellular Automata
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Book Synopsis Optimal Design of Variable-stiffness Fiber-reinforced Composites Using Cellular Automata by : Shahriar Setoodeh
Download or read book Optimal Design of Variable-stiffness Fiber-reinforced Composites Using Cellular Automata written by Shahriar Setoodeh and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Aerospace Structures and Materials by : Yucheng Liu
Download or read book Aerospace Structures and Materials written by Yucheng Liu and published by Bentham Science Publishers. This book was released on 2016-10-07 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive volume presents a wide spectrum of information about the design, analysis and manufacturing of aerospace structures and materials. Readers will find an interesting compilation of reviews covering several topics such as structural dynamics and impact simulation, acoustic and vibration testing and analysis, fatigue analysis and life optimization, reversing design methodology, non-destructive evaluation, remotely piloted helicopters, surface enhancement of aerospace alloys, manufacturing of metal matrix composites, applications of carbon nanotubes in aircraft material design, carbon fiber reinforcements, variable stiffness composites, aircraft material selection, and much more. This volume is a key reference for graduates undertaking advanced courses in materials science and aeronautical engineering as well as researchers and professional engineers seeking to increase their understanding of aircraft material selection and design.
Book Synopsis Mechanical Response of Composites by : Pedro P. Camanho
Download or read book Mechanical Response of Composites written by Pedro P. Camanho and published by Springer Science & Business Media. This book was released on 2008-06-20 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: Themethodologyfordesigninghigh-performancecompositestructuresisstill evo- ing. The complexity of the response of composite materials and the dif?culties in predicting the composite material properties from the basic properties of the c- stituents result in the need for a well-planned and exhaustive test program. The recommended practice to mitigate the technological risks associated with advanced composite materials is to substantiate the performance and durability of the design in a sequence of steps known as the Building Block Approach. The Building Block Approach ensures that cost and performance objectives are met by testing greater numbers of smaller, less expensive specimens. In this way, technology risks are assessed early in the program. In addition, the knowledge acquired at a given level of structural complexity is built up before progressing to a level of increased complexity. Achieving substantiation of structural performance by testing alone can be p- hibitively expensive because of the number of specimens and components required to characterize all material systems, loading scenarios and boundary conditions. Building Block Approachprogramscan achieve signi?cant cost reductionsby se- ing a synergy between testing and analysis. The more the development relies on analysis, the less expensive it becomes. The use of advanced computational models for the prediction of the mechanical response of composite structures can replace some of the mechanical tests and can signi?cantly reduce the cost of designing with composites while providing to the engineers the information necessary to achieve an optimized design.
Book Synopsis Behavior of Materials under Impact, Explosion, High Pressures and Dynamic Strain Rates by : Maxim Yu. Orlov
Download or read book Behavior of Materials under Impact, Explosion, High Pressures and Dynamic Strain Rates written by Maxim Yu. Orlov and published by Springer Nature. This book was released on 2022-10-31 with total page 307 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the results of experimental and theoretical studies of the destruction of solids under impact, explosion, high pressures, and strain rates. The content identifies the basic laws of the destruction of bodies under dynamic loads. The results of numerical studies were obtained using numerical methods on the Lagrangian, Euler, and ALE approaches to the description of the motion of continuous media. Numerical methods and mathematical models have been tested by comparison with experimental data and well-known analytical solutions (for instance, Rankin–Hugoniot laws). Experimental studies were performed on unique ballistic installations with the registration of fast processes (high-speed shooting). The results are used as new tests to verify the developing modeling methods. The research objects were metal multilayer plates, functionally graded materials, advanced, smart, and natural materials, etc. The book is interesting to specialists in the field of mathematical modeling and experimental methods for studying fast processes under dynamic loading.
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2006 with total page 860 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Optimal Design of Variable Stiffness Composite Structures Using Lamination Parameters by : Samuel Tsunduka IJsselmuiden
Download or read book Optimal Design of Variable Stiffness Composite Structures Using Lamination Parameters written by Samuel Tsunduka IJsselmuiden and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the 8th Biennial Conference on Engineering Systems Design and Analysis--2006: Dynamic systems and controls. Symposium on design and analysis of advanced structures. Tribology by :
Download or read book Proceedings of the 8th Biennial Conference on Engineering Systems Design and Analysis--2006: Dynamic systems and controls. Symposium on design and analysis of advanced structures. Tribology written by and published by . This book was released on 2006 with total page 1040 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Surrogate-based Multi-objective Optimization of Variable Stiffness Composites with Embedded Defects Induced by Automated Fiber Placement by : Mahdi Arian Nik
Download or read book Surrogate-based Multi-objective Optimization of Variable Stiffness Composites with Embedded Defects Induced by Automated Fiber Placement written by Mahdi Arian Nik and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "In composite materials, a variable stiffness design, where the fibers are allowed to follow curvilinear paths, gives freedom to tailor the properties in directions that are more favorable for carrying loads within the laminate. As a result, it yields improved structural performance and provides flexibility for a trade-off between structural properties. A variable stiffness composite laminate can be manufactured using Automated Fiber Placement (AFP) technology. Due to the characteristics of the manufacturing process by AFP, certain defects in the form of gaps and/or overlaps emerge within the composite laminate. The present thesis describes an efficient tool developed to design and optimize variable stiffness laminates with embedded defects manufactured by AFP.First, simultaneous maximization of the buckling load and in-plane stiffness is investigated for a variable stiffness laminate, where semi-analytical analysis is used to evaluate the structural properties. The results show that the use of a curvilinear fiber path allows the simultaneous improvement of both buckling load and in-plane stiffness of a variable stiffness laminate compared to a quasi-isotropic laminate. It is found that the optimum direction of varying the fiber angle depends on the loading and boundary conditions. For a plate with free transverse edges, the optimum direction is perpendicular to the loading direction, while for fixed transverse edges it is along the loading direction. It is demonstrated that the minimum turning radius constraint imposed by AFP significantly reduces the maximum achievable improvement in the buckling load of a variable stiffness laminate. Second, a novel method, namely Defect Layer Method, is proposed to capture the location and geometry of defects and build the finite element model of a variable stiffness laminate with embedded defects. The method is then used in a parametric study to evaluate the impact of design and manufacturing parameters on the amount of defects within the laminate. The results show that using a one-sided tow drop strategy results in a significant lower amount of gaps and overlaps within the laminate compared to a both-sided tow drop strategy. It is demonstrated that using the largest number of tows with the smallest tow width yields the minimum gap and overlap area percentages within a variable stiffness laminate.Third, a surrogate-based optimization algorithm is proposed to alleviate the high computational cost of the optimization of a variable stiffness laminate. To select an appropriate metamodel, the performance of alternative metamodeling methods is compared using multiple criteria. A metamodel performance is assessed in terms of its accuracy and robustness in constructing an approximation of the buckling load and in-plane stiffness, and its suitability for integration into an optimization framework. It is found that in terms of accuracy, both Kriging (KRG) and Radial Basis Function (RBF) provide the best results, where in terms of robustness KRG has been slightly better than RBF. In terms of suitability, KRG has shown the best performance for problems with a low number of design variables, whereas RBF has been the most appropriate method for a high number of variables.Finally, the surrogate-based multi-objective optimization is used to simultaneously maximize the buckling load and in-plane stiffness of a variable stiffness laminate with embedded defects. The results show that if the effect of defects is factored in the optimization problem, for a complete gap strategy the defect-free Pareto front shifts towards lower in-plane stiffness and buckling load, whereas for a complete overlap strategy the defect-free Pareto front moves towards higher structural properties. The difference between gap and overlap modified Pareto fronts is largest for laminates that provides the maximum buckling load improvement and decreases as the layup becomes closer to the case of maximum in-plane stiffness." --
Book Synopsis Topology Optimization by : Martin Philip Bendsoe
Download or read book Topology Optimization written by Martin Philip Bendsoe and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: The topology optimization method solves the basic enginee- ring problem of distributing a limited amount of material in a design space. The first edition of this book has become the standard text on optimal design which is concerned with the optimization of structural topology, shape and material. This edition, has been substantially revised and updated to reflect progress made in modelling and computational procedures. It also encompasses a comprehensive and unified description of the state-of-the-art of the so-called material distribution method, based on the use of mathematical programming and finite elements. Applications treated include not only structures but also materials and MEMS.
Book Synopsis Elements of Structural Optimization by : Raphael T. Haftka
Download or read book Elements of Structural Optimization written by Raphael T. Haftka and published by Springer Science & Business Media. This book was released on 2013-03-14 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of structural optimization is still a relatively new field undergoing rapid changes in methods and focus. Until recently there was a severe imbalance between the enormous amount of literature on the subject, and the paucity of applications to practical design problems. This imbalance is being gradually redressed now. There is still no shortage of new publications, but there are also exciting applications of the methods of structural optimizations in the automotive, aerospace, civil engineering, machine design and other engineering fields. As a result of the growing pace of applications, research into structural optimization methods is increasingly driven by real-life problems. Most engineers who design structures employ complex general-purpose software packages for structural analysis. Often they do not have any access to the source the details of program, and even more frequently they have only scant knowledge of the structural analysis algorithms used in this software packages. Therefore the major challenge faced by researchers in structural optimization is to develop methods that are suitable for use with such software packages. Another major challenge is the high computational cost associated with the analysis of many complex real-life problems. In many cases the engineer who has the task of designing a structure cannot afford to analyze it more than a handful of times.
Book Synopsis Design and Optimization of Laminated Composite Materials by : Zafer Gürdal
Download or read book Design and Optimization of Laminated Composite Materials written by Zafer Gürdal and published by John Wiley & Sons. This book was released on 1999-01-28 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: Kompositwerkstoffe wurden traditionell in der Raumfahrt verwendet, weil Gewicht dort ein wichtiger Faktor ist. Mittlerweile hat man diese Werkstoffe auch im Bereich des Maschinenbaus eingesetzt. Dies ist das erste Buch, das Mechanik und Optimierungstechniken für Kompositwerkstoffe aufbereitet. Beigefügt ist eine Diskette mit Anwendungen und Lernprogrammen. (02/99)
Book Synopsis Optimal Design with Advanced Materials by : P. Pedersen
Download or read book Optimal Design with Advanced Materials written by P. Pedersen and published by Elsevier. This book was released on 2012-12-02 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optimal design with advanced materials is becoming a very progressive and challenging domain within applied mechanics. The increasing use of advanced materials, such as anisotropic fiber composites and ceramics, is instigating new developments to be made within constitutive modelling and the computational methods of analysis, sensitivity analysis and optimization. A new dimension of optimal design is being realised by the direct tailoring and building of new materials. Research in this area is accelerating rapidly with the results already being applied to high technology industries. Two vital high technology research areas covered in this volume include homogenization and smart materials/structures. The 31 papers will prove an indispensable reference source for all those involved in the interdisciplinary research and development aspects of mechanics, materials and mathematics in the design of advanced materials.
Book Synopsis Crystal Plasticity Finite Element Methods by : Franz Roters
Download or read book Crystal Plasticity Finite Element Methods written by Franz Roters and published by John Wiley & Sons. This book was released on 2011-08-04 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by the leading experts in computational materials science, this handy reference concisely reviews the most important aspects of plasticity modeling: constitutive laws, phase transformations, texture methods, continuum approaches and damage mechanisms. As a result, it provides the knowledge needed to avoid failures in critical systems udner mechanical load. With its various application examples to micro- and macrostructure mechanics, this is an invaluable resource for mechanical engineers as well as for researchers wanting to improve on this method and extend its outreach.
Book Synopsis Structural Crashworthiness by : Norman Jones
Download or read book Structural Crashworthiness written by Norman Jones and published by Butterworth-Heinemann. This book was released on 1983 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Cardiovascular Soft Tissue Mechanics by : Stephen C. Cowin
Download or read book Cardiovascular Soft Tissue Mechanics written by Stephen C. Cowin and published by Springer Science & Business Media. This book was released on 2001 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cowin (New York Center for Biomedical Engineering) and Humphrey (biomedical engineering, Texas A&M U.) present seven papers that discuss current research and future directions. Topics concern tissues within the cardiovascular system (arteries, the heart, and biaxial testing of planar tissues such as heart valves). Themes include an emphasis on data on the underlying microstructure, especially collagen; the consideration of the fact that both arteries and the heart contain muscle and that there is, therefore, a need to quantify both the active and passive response; constitutive relations for active behavior; and the growth and remodeling of cardiovascular tissues. Of interest to cardiovascular and biomechanics soft tissue researchers, and bioengineers. Annotation copyrighted by Book News, Inc., Portland, OR.
Author :Stephanus Büttgenbach Publisher :Springer Science & Business Media ISBN 13 :364212903X Total Pages :447 pages Book Rating :4.6/5 (421 download)
Book Synopsis Design and Manufacturing of Active Microsystems by : Stephanus Büttgenbach
Download or read book Design and Manufacturing of Active Microsystems written by Stephanus Büttgenbach and published by Springer Science & Business Media. This book was released on 2011-03-04 with total page 447 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the design and manufacturing of microsystems as well as necessary key technologies developed within the Collaborative Research Center 516. The research efforts of this collaboration are focused on active micro systems which are based on the electromagnetic actuator principle. The travel of the investigated actuator systems is on the order of several millimeters. The total construction size of the actuator is on the range of several centimeters whereas essential structures being several micrometers. The methods and the production technologies that are investigated on the basis of various research models incorporate the fundamental process chains of microsystems.
Book Synopsis Topics in the Mathematical Modelling of Composite Materials by : Andrej V. Cherkaev
Download or read book Topics in the Mathematical Modelling of Composite Materials written by Andrej V. Cherkaev and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 329 pages. Available in PDF, EPUB and Kindle. Book excerpt: Andrej V. Cherkaev and Robert V. Kohn In the past twenty years we have witnessed a renaissance of theoretical work on the macroscopic behavior of microscopically heterogeneous mate rials. This activity brings together a number of related themes, including: ( 1) the use of weak convergence as a rigorous yet general language for the discussion of macroscopic behavior; (2) interest in new types of questions, particularly the "G-closure problem," motivated in large part by applications of optimal control theory to structural optimization; (3) the introduction of new methods for bounding effective moduli, including one based on "com pensated compactness"; and (4) the identification of deep links between the analysis of microstructures and the multidimensional calculus of variations. This work has implications for many physical problems involving optimal design, composite materials, and coherent phase transitions. As a result it has received attention and support from numerous scientific communities, including engineering, materials science, and physics as well as mathematics. There is by now an extensive literature in this area. But for various reasons certain fundamental papers were never properly published, circu lating instead as mimeographed notes or preprints. Other work appeared in poorly distributed conference proceedings volumes. Still other work was published in standard books or journals, but written in Russian or French. The net effect is a sort of "gap" in the literature, which has made the subject unnecessarily difficult for newcomers to penetrate.
