Download or read book Physically Based Simulation of Various Fabrics with Multi level Modeling written by Di Cao and published by . This book was released on 2017 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cloth simulation has been studied in computer graphics since the early 1980’s. It has been widely applied as special effects in feature-length films as well as animated movies, virtual fitting, costume design, etc. Textile fibers, yarns and fabric structure are considered to be interdependent in the production of fabric and together they decide the internal mechanical properties. Unfortunately, the currently popular mass-spring model describes the relationship between knot and yarn as a simple linear mass-spring system. Although simple to code and fast to execute, it is neither stable nor an accurate mathematical approximation to the real-world cloth deformations, even though it partially represents the cloth knot-yarn structure. The other main approach to cloth modeling is the finite element method. This approach models the whole piece of cloth as a continuous sheet, discretized into many small elements (often, triangles). However, the flat sheet structure only considers the shape and it ignores all yarn-level details (yarn twist, yarn slip, woven structure, etc.), which limit its accuracy even when a better data-driven stiffness model is used. Our new model is inspired by King et al. [55] and generated by modifying the existing FEM. Unlike the existing FEM, our model incorporates the knot-yarn details by paying attention to microscopic (fibers), mesoscopic (yarns) and macroscopic (fabric structure) aspects of cloth construction. On a macroscopic level, the unit element is a second order nine-node quadrilateral rather than a linear three-node typical triangle of the FEM. A linear combination of functions (shape functions) of each node is used to interpolate the deformation gradient of any point within the element to solve the differential equations governing the cloth’s motion. The strain-stress (stiffness) model used in the FEM approaches is replaced by a discrete physical stress tensor model describing the yarn-yarn crossover structure. The stress is calculated analytically from the microscopic forces such as the yarn stretch and the mesoscopic forces including yarn shear, uncrimping, and locking due to the yarn structure. We then apply the Gaussian quadrature rule to do the interpolation and homogenize over the element surface to get the force on each of the nine nodes. We present a new fabric system with better nonlinearity and anisotropy, faster computation and more realistic simulation. Results show that our new cloth model has advantages over the existing models particularly with regard to producing more natural looking wrinkles and folds.

Download or read book Porous lightweight composites reinforced with fibrous structures written by Yiqi Yang and published by Springer. This book was released on 2017-07-30 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book will be a one-stop-shop for readers seeking information on lightweight composites made from multiple materials via diverse processing technologies. The lightweight composites are featured for their potential to be basic construction units in a variety of areas, especially automotive, civil engineering, aerospace engineering, etc. Emphasis will be on how fibers or fibrous structures reinforce the composites. The subject of the book is to provide a comprehensive understanding on the raw materials, processing technologies, performance properties, and end uses of lightweight composites.

Download or read book Regular Nanofabrics in Emerging Technologies written by M. Haykel Ben Jamaa and published by Springer Science & Business Media. This book was released on 2011-03-24 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt: Regular Nanofabrics in Emerging Technologies gives a deep insight into both fabrication and design aspects of emerging semiconductor technologies, that represent potential candidates for the post-CMOS era. Its approach is unique, across different fields, and it offers a synergetic view for a public of different communities ranging from technologists, to circuit designers, and computer scientists. The book presents two technologies as potential candidates for future semiconductor devices and systems and it shows how fabrication issues can be addressed at the design level and vice versa. The reader either for academic or research purposes will find novel material that is explained carefully for both experts and non-initiated readers. Regular Nanofabrics in Emerging Technologies is a survey of post-CMOS technologies. It explains processing, circuit and system level design for people with various backgrounds.

Download or read book Clothing Appearance and Fit written by J Fan and published by Elsevier. This book was released on 2004-09-20 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fashion and beauty have helped shape history and today more than ever, we find ourselves under increasing pressure to think about what we wear, what we look good in and how best to enhance our body shape and size. Behind this seemingly superficial industry, however, lies a technical thinking firmly grounded in science and technology. In one fully comprehensive book, Clothing appearance and fit: Science and technology provides a critical appreciation of the technological developments and scientific understanding of the appearance and fit of clothing. The authors bridge the science of beauty and fashion design with garment evaluation technology, garment drape and human anthropometrics and sizing. The ten chapters of the book provide a detailed coverage of clothing appearance and fit. Chapter 1 considers body attractiveness and how it relates to clothing material and design parameters and discusses classical and contemporary theories of beauty. Chapters 2 and 3 present the industry’s techniques, methods and standards for assessing clothing appearance and fit and Chapters 4 and 5 review the research and development of objective measurement technologies for evaluating clothing appearance and fit. Fabric objective measurement, fabric properties and garment drape are covered in Chapters 6 and 7 and the R & D of body measurement, anthropometrics and sizing systems are detailed in Chapters 8 and 9. The final chapter reviews published work on garment design and pattern alteration for achieving good clothing appearance and fit. This book is an essential reference for researchers, academics, professionals and students in clothing and textile academia and industry. It includes many industrial standards, techniques and practices. Offers a critical appreciation of technological developments Incorporates user-friendly illustrations and photographs Valuable reference for students, researchers and professionals in the clothing and textile industries

Download or read book Cloth Simulation for Computer Graphics written by Tuur Stuyck and published by Morgan & Claypool Publishers. This book was released on 2018-08-24 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt: Physics-based animation is commonplace in animated feature films and even special effects for live-action movies. Think about a recent movie and there will be some sort of special effects such as explosions or virtual worlds. Cloth simulation is no different and is ubiquitous because most virtual characters (hopefully!) wear some sort of clothing. The focus of this book is physics-based cloth simulation. We start by providing background information and discuss a range of applications. This book provides explanations of multiple cloth simulation techniques. More specifically, we start with the most simple explicitly integrated mass-spring model and gradually work our way up to more complex and commonly used implicitly integrated continuum techniques in state-of-the-art implementations. We give an intuitive explanation of the techniques and give additional information on how to efficiently implement them on a computer. This book discusses explicit and implicit integration schemes for cloth simulation modeled with mass-spring systems. In addition to this simple model, we explain the more advanced continuum-inspired cloth model introduced in the seminal work of Baraff and Witkin [1998]. This method is commonly used in industry. We also explain recent work by Liu et al. [2013] that provides a technique to obtain fast simulations. In addition to these simulation approaches, we discuss how cloth simulations can be art directed for stylized animations based on the work of Wojtan et al. [2006]. Controllability is an essential component of a feature animation film production pipeline. We conclude by pointing the reader to more advanced techniques.

Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1989 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Composite Reinforcements for Optimum Performance written by Philippe Boisse and published by Woodhead Publishing. This book was released on 2020-10-22 with total page 730 pages. Available in PDF, EPUB and Kindle. Book excerpt: Composite Reinforcements for Optimum Performance, Second Edition, has been brought fully up to date with the latest developments in the field. It reviews the materials, properties and modelling techniques used in composite production and highlights their uses in optimizing performance. Part I covers materials for reinforcements in composites, including chapters on fibers, carbon nanotubes and ceramics as reinforcement materials. In Part II, different types of structures for reinforcements are discussed, with chapters covering woven and braided reinforcements, three-dimensional fibre structures and two methods of modelling the geometry of textile reinforcements: WiseTex and TexGen. Part III focuses on the properties of composite reinforcements, with chapters on topics such as in-plane shear properties, transverse compression, bending and permeability properties. Finally, Part IV covers the characterization and modelling of reinforcements in composites, with chapters focusing on microscopic and mesoscopic approaches, X-ray tomography analysis and modelling reinforcement forming processes. With its distinguished editor and international team of contributors, Composite Reinforcements for Optimum Performance, Second Edition, is an essential reference for designers and engineers working in the composite and composite reinforcement manufacturing industry, as well as all those with an academic research interest in the subject. Discusses the characterization and modeling of reinforcements in composites, focusing on such topics as microscopic and mesoscopic approaches, X-ray tomography analysis, and modeling reinforcement forming processes Provides comprehensive coverage of the types and properties of reinforcement in composites, along with their production and performance optimization Includes sections on NCF (non-crimp fabrics), natural fiber reinforcements, tufting composite reinforcements, sustainability, multiscale modeling, knitted reinforcements, and more

Download or read book Topology Based Modeling of Textile Structures and Their Joint Assemblies written by Yordan Kyosev and published by Springer. This book was released on 2018-12-13 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the textile-, mathematical and mechanical background for the modelling of fiber based structures such as yarns, braided and knitted textiles. The hierarchical scales of these textiles and the structural elements at the different levels are analysed and the methods for their modelling are presented. The author reports about problems, methods and algorithms and possible solutions from his twenty year experience in the modelling and software development of CAD for textiles.

Download or read book Physically Based Rendering written by Matt Pharr and published by Morgan Kaufmann. This book was released on 2016-09-30 with total page 1270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Physically Based Rendering: From Theory to Implementation, Third Edition, describes both the mathematical theory behind a modern photorealistic rendering system and its practical implementation. Through a method known as 'literate programming', the authors combine human-readable documentation and source code into a single reference that is specifically designed to aid comprehension. The result is a stunning achievement in graphics education. Through the ideas and software in this book, users will learn to design and employ a fully-featured rendering system for creating stunning imagery. This completely updated and revised edition includes new coverage on ray-tracing hair and curves primitives, numerical precision issues with ray tracing, LBVHs, realistic camera models, the measurement equation, and much more. It is a must-have, full color resource on physically-based rendering. Presents up-to-date revisions of the seminal reference on rendering, including new sections on bidirectional path tracing, numerical robustness issues in ray tracing, realistic camera models, and subsurface scattering Provides the source code for a complete rendering system allowing readers to get up and running fast Includes a unique indexing feature, literate programming, that lists the locations of each function, variable, and method on the page where they are first described Serves as an essential resource on physically-based rendering

Download or read book Modelling and Predicting Textile Behaviour written by Xiaogang Chen and published by Elsevier. This book was released on 2009-11-30 with total page 559 pages. Available in PDF, EPUB and Kindle. Book excerpt: The textile industry can experience a vast array of problems. Modelling represents a group of techniques that have been widely used to explore the nature of these problems, it can highlight the mechanisms involved and lead to predictions of the textile behaviour. This book provides an overview of how textile modelling techniques can be used successfully within the textile industry for solving various problems. The first group of chapters reviews the different types of models and methods available for predicting textile structures and behaviour. Chapters include modelling of yarn, woven and nonwoven materials. The second group of chapters presents a selection of case studies, expressing the strengths and limitations and how various models are applied in specific applications. Case studies such as modelling colour properties for textiles and modelling, simulation and control of textile dyeing are discussed. With its distinguished editor and international range of contributors, Modelling and predicting textile behaviour is essential reading material for textile technologists, fibre scientists and textile engineers. It will also be beneficial for academics researching this important area. Provides an overview of the different types of models and methods that can be used successfully within the textile industry Reviews the structural hierarchy in textile materials fundamental to the modelling of textile fibrous structures Assesses the strengths and weaknesses of different textile models and how specific models are applied in different situations

Download or read book Computer Simulation written by Dragan Cvetković and published by BoD – Books on Demand. This book was released on 2017-06-07 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first chapter provides an overview of the development of a novel agent-based simulation model of socio-environmental innovation diffusion. The second chapter shows the study about rendering of colours with three rendering engines. The third and fourth chapters are devoted to modelling clothes at different levels. The fifth chapter describes the modelling of computer simulation in the optimization of bioprocess technology. Chapters 6 and 7 formulate a physical model of deformation of steel and idea of constructing a scientific workshop focused on high-temperature processes. Chapter 8 formulates surrogate models. Chapter 9 shows computer simulation of high-frequency electromagnetic fields. Chapter 10 proposes the modelling of the task allocation problem by the use of Petri Nets. Chapter 11 presents various scenarios whose ranking is done according to defined criteria and weight coefficients.

Download or read book Cloth Modeling and Animation written by Donald House and published by CRC Press. This book was released on 2000-07-13 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by leaders in the field of computer clothing design and simulation, Cloth Modeling and Animation is a vital resource for researchers and developers of cloth simulation software as well as computer animators and graphics programmers. Readers will learn about cloth's nature and structure, scientific approaches to understanding its behavior an

Download or read book Data Analysis Using Regression and Multilevel Hierarchical Models written by Andrew Gelman and published by Cambridge University Press. This book was released on 2007 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book, first published in 2007, is for the applied researcher performing data analysis using linear and nonlinear regression and multilevel models.

Download or read book Multiscale Modeling and Simulation of Composite Materials and Structures written by Young Kwon and published by Springer Science & Business Media. This book was released on 2007-12-04 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the state-of-the-art in multiscale modeling and simulation techniques for composite materials and structures. It focuses on the structural and functional properties of engineering composites and the sustainable high performance of components and structures. The multiscale techniques can be also applied to nanocomposites which are important application areas in nanotechnology. There are few books available on this topic.

Download or read book Computer Technology for Textiles and Apparel written by Jinlian Hu and published by Elsevier. This book was released on 2011-07-14 with total page 393 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computer technology has transformed textiles from their design through to their manufacture and has contributed to significant advances in the textile industry. Computer technology for textiles and apparel provides an overview of these innovative developments for a wide range of applications, covering topics including structure and defect analysis, modelling and simulation, and apparel design. The book is divided into three parts. Part one provides a review of different computer-based technologies suitable for textile materials, and includes chapters on computer technology for yarn and fabric structure analysis, defect analysis and measurement. Chapters in part two discuss modelling and simulation principles of fibres, yarns, textiles and garments, while part three concludes with a review of computer-based technologies specific to apparel and apparel design, with themes ranging from 3D body scanning to the teaching of computer-aided design to fashion students. With its distinguished editor and international team of expert contributors, Computer technology for textiles and apparel is an invaluable tool for a wide range of people involved in the textile industry, from designers and manufacturers to fibre scientists and quality inspectors. Provides an overview of innovative developments in computer technology for a wide range of applications Covers structure and defect analysis, modelling and simulation and apparel design Themes range from 3D body scanning to the teaching of computer-aided design to fashion students

Download or read book Proceedings of the 2015 Federated Conference on Software Development and Object Technologies written by Jan Janech and published by Springer. This book was released on 2016-12-14 with total page 401 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the proceedings of the International Conference SDOT which was organized at the University in Žilina, Faculty of Management Sciences and Informatics, Slovak Republic in November 19, 2015. The conference was truly international both in terms of the amount of foreign contributions and in terms of composition of steering and scientific committees. The book and the conference serves as a platform of professional exchange of knowledge and experience for the latest trends in software development and object-oriented technologies (theory and practice). This proceedings present information on the latest developments and mediate the exchange of experience between practitioners and academia.

Download or read book Modeling and Simulation of Mixed Analog Digital Systems written by B. Antao and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 131 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modeling and Simulation of Mixed Analog-Digital Systems brings together in one place important contributions and state-of-the-art research results in this rapidly advancing area. Modeling and Simulation of Mixed Analog-Digital Systems serves as an excellent reference, providing insight into some of the most important issues in the field.