Micromechanical Analysis And Multi Scale Modeling Using The Voronoi Cell Finite Element Method
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Micromechanical Analysis And Multi Scale Modeling Using The Voronoi Cell Finite Element Method
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Author : Somnath Ghosh
language : en
Publisher: CRC Press
Release Date : 2011-06-23
Micromechanical Analysis And Multi Scale Modeling Using The Voronoi Cell Finite Element Method written by Somnath Ghosh and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-06-23 with Technology & Engineering categories.
As multi-phase metal/alloy systems and polymer, ceramic, or metal matrix composite materials are increasingly being used in industry, the science and technology for these heterogeneous materials has advanced rapidly. By extending analytical and numerical models, engineers can analyze failure characteristics of the materials before they are integrat
Multiscale Modeling Of Complex Materials
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Author : Tomasz Sadowski
language : en
Publisher: Springer
Release Date : 2014-10-14
Multiscale Modeling Of Complex Materials written by Tomasz Sadowski and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-10-14 with Science categories.
The papers in this volume deal with materials science, theoretical mechanics and experimental and computational techniques at multiple scales, providing a sound base and a framework for many applications which are hitherto treated in a phenomenological sense. The basic principles are formulated of multiscale modeling strategies towards modern complex multiphase materials subjected to various types of mechanical, thermal loadings and environmental effects. The focus is on problems where mechanics is highly coupled with other concurrent physical phenomena. Attention is also focused on the historical origins of multiscale modeling and foundations of continuum mechanics currently adopted to model non-classical continua with substructure, for which internal length scales play a crucial role.
Simulation Of Damage Mechanisms In Weave Reinforced Materials Based On Multiscale Modeling
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Author : Naake, Dominik Robert
language : en
Publisher: KIT Scientific Publishing
Release Date : 2020-09-18
Simulation Of Damage Mechanisms In Weave Reinforced Materials Based On Multiscale Modeling written by Naake, Dominik Robert and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-09-18 with Technology & Engineering categories.
A weave reinforced composite material with a thermoplastic matrix is investigated by using a multiscale chain to predict the macroscopic material behavior. A large-strain framework for constitutive modeling with focus on material non-linearities, i.e. plasticity and damage is defined. The ability of the geometric and constitutive models to predict the deformation and failure behavior is demonstrated by means of selected examples.
Effective Properties Of Heterogeneous Materials
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Author : Mark Kachanov
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-01-21
Effective Properties Of Heterogeneous Materials written by Mark Kachanov and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-01-21 with Science categories.
The book contains state-of the-art reviews in the area of effective properties of heterogeneous materials - the classical field at interface of materials science and solid mechanics. The primary focus is on thermo-mechanical properties, materials science applications, as well as computational aspects and new opportunities provided by rapidly increasing computer powers. The reviews are at the level that is appropriate for a substantial community of researchers working in this field, both at universities and in the industry, and to graduate students. The book can be used as supplementary reading to graduate level courses.
Integrated Computational Materials Engineering Icme
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Author : Somnath Ghosh
language : en
Publisher: Springer Nature
Release Date : 2020-03-20
Integrated Computational Materials Engineering Icme written by Somnath Ghosh and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-03-20 with Technology & Engineering categories.
This book introduces research advances in Integrated Computational Materials Engineering (ICME) that have taken place under the aegis of the AFOSR/AFRL sponsored Center of Excellence on Integrated Materials Modeling (CEIMM) at Johns Hopkins University. Its author team consists of leading researchers in ICME from prominent academic institutions and the Air Force Research Laboratory. The book examines state-of-the-art advances in physics-based, multi-scale, computational-experimental methods and models for structural materials like polymer-matrix composites and metallic alloys. The book emphasizes Ni-based superalloys and epoxy matrix carbon-fiber composites and encompasses atomistic scales, meso-scales of coarse-grained models and discrete dislocations, and micro-scales of poly-phase and polycrystalline microstructures. Other critical phenomena investigated include the relationship between microstructural morphology, crystallography, and mechanisms to the material response at different scales; methods of identifying representative volume elements using microstructure and material characterization, and robust deterministic and probabilistic modeling of deformation and damage. Encompassing a slate of topics that enable readers to comprehend and approach ICME-related issues involved in predicting material performance and failure, the book is ideal for mechanical, civil, and aerospace engineers, and materials scientists, in in academic, government, and industrial laboratories.
Multi Scale Analysis Of Elastic And Debonding Composites By An Adaptive Multi Level Computational Model
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Author : Prasanna Raghavan
language : en
Publisher:
Release Date : 2004
Multi Scale Analysis Of Elastic And Debonding Composites By An Adaptive Multi Level Computational Model written by Prasanna Raghavan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Composite materials categories.
Abstract: In this thesis, an adaptive multi-level computational model is developed to comprehensively address issues of discretization and physically based modeling error in structures consisting of heterogeneous microstructures. The model consists of three essential levels, (i) a purely macroscopic domain (level-0) with homogenized material parameters; (ii) a macro-micro domain (level-1) with the micro-domain represented by the periodic repetition of a Representative Volume Element (RVE) and (iii) purely microscopic domain (level-2) where the RVE ceases to exist and extended microstructural regions need to be modeled. All microstructural computations of arbitrary heterogeneous domains are conducted using the adaptive Voronoi cell finite element model. Statistical functions are used to assess the extent of the RVE domains for non-uniform microstructures. For the macroscopic domains, $h$- and $hp$- adaptations are executed using conventional error indicators based on the energy norm. For composites with fiber/matrix interfacial debonding, a Continuum Damage Mechanics (CDM) model for level-0 analysis is constructed from rigorous VCFEM-based micromechanical analysis of the RVE followed by homogenization. An intermediate layer is used between the macroscopic and microscopic regions for smooth transition. Physically based error indicators are developed for transition from macroscopic to microscopic domain. The model is tested for a realistic problem with macroscopic stress risers to demonstrate the limitations of homogenized model and the effectiveness of the multi-scale in predicting accurate microscopic stresses. The numerical simulations with elastic and debonding composites are compared with results from pure micromechanics and other multi-level models in the literature.
Micromechanics And Nanomechanics Of Composite Solids
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Author : Shaker A. Meguid
language : en
Publisher: Springer
Release Date : 2017-07-19
Micromechanics And Nanomechanics Of Composite Solids written by Shaker A. Meguid and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-07-19 with Science categories.
This book elucidates the most recent and highly original developments in the fields of micro- and nanomechanics and the corresponding homogenization techniques that can be reliably adopted and applied in determining the local properties, as well as the linear and nonlinear effective properties of the final architecture of these complex composite structures. Specifically, this volume, divided into three main sections—Fundamentals, Modeling, and Applications—provides recent developments in the mathematical framework of micro- and nanomechanics, including Green’s function and Eshelby’s inclusion problem, molecular mechanics, molecular dynamics, atomistic based continuum, multiscale modeling, and highly localized phenomena such as microcracks and plasticity. It is a compilation of the most recent efforts by a group of the world’s most talented and respected researchers. Ideal for graduate students in aerospace, mechanical, civil, material science, life sciences, and biomedical engineering, researchers, practicing engineers, and consultants, the book provides a unified approach in compiling micro- and nano-scale phenomena. · Elucidates recent and highly original developments in the fields of micromechanics and nanomechanics and the corresponding homogenization techniques; · Includes several new topics that are not covered in the current literature, such as micromechanics of metamaterials, electrical conductivity of CNT and graphene nanocomposites, ferroelectrics, piezoelectric, and electromagnetic materials; · Addresses highly localized phenomena such as coupled field problems, microcracks, inelasticity, dispersion of CNTs, synthesis, characterization and a number of interesting applications; · Maximizes readers’ ability to apply theories of micromechanics and nanomechanics to heterogeneous solids; · Illustrates application of micro- and nanomechanical theory to design novel composite and nanocomposite materials.
Modeling And Simulation Of Functionalized Materials For Additive Manufacturing And 3d Printing Continuous And Discrete Media
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Author : Tarek I. Zohdi
language : en
Publisher: Springer
Release Date : 2017-12-22
Modeling And Simulation Of Functionalized Materials For Additive Manufacturing And 3d Printing Continuous And Discrete Media written by Tarek I. Zohdi and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-12-22 with Technology & Engineering categories.
Within the last decade, several industrialized countries have stressed the importance of advanced manufacturing to their economies. Many of these plans have highlighted the development of additive manufacturing techniques, such as 3D printing which, as of 2018, are still in their infancy. The objective is to develop superior products, produced at lower overall operational costs. For these goals to be realized, a deep understanding of the essential ingredients comprising the materials involved in additive manufacturing is needed. The combination of rigorous material modeling theories, coupled with the dramatic increase of computational power can potentially play a significant role in the analysis, control, and design of many emerging additive manufacturing processes. Specialized materials and the precise design of their properties are key factors in the processes. Specifically, particle-functionalized materials play a central role in this field, in three main regimes: (1) to enhance overall filament-based material properties, by embedding particles within a binder, which is then passed through a heating element and the deposited onto a surface, (2) to “functionalize” inks by adding particles to freely flowing solvents forming a mixture, which is then deposited onto a surface and (3) to directly deposit particles, as dry powders, onto surfaces and then to heat them with a laser, e-beam or other external source, in order to fuse them into place. The goal of these processes is primarily to build surface structures which are extremely difficult to construct using classical manufacturing methods. The objective of this monograph is introduce the readers to basic techniques which can allow them to rapidly develop and analyze particulate-based materials needed in such additive manufacturing processes. This monograph is broken into two main parts: “Continuum Method” (CM) approaches and “Discrete Element Method” (DEM) approaches. The materials associated with methods (1) and (2) are closely related types of continua (particles embedded in a continuous binder) and are treated using continuum approaches. The materials in method (3), which are of a discrete particulate character, are analyzed using discrete element methods.
Failure Analysis Of Composite Materials With Manufacturing Defects
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Author : Ramesh Talreja
language : en
Publisher: CRC Press
Release Date : 2024-02-16
Failure Analysis Of Composite Materials With Manufacturing Defects written by Ramesh Talreja and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-02-16 with Technology & Engineering categories.
In contrast to metals, a composite material acquires an internal structure where the imprint of its manufacturing process history is a significant part of the internal structure’s makeup and in many cases determines how the material responds to external impulses. The performance for which a composite material is designed must therefore be assessed with due consideration to the manufacturing-induced features in the material volume. Failure theories based on homogenized composites cannot deliver reliable methodologies for performance assessment. This book details approaches that depart from traditional treatments by accounting for manufacturing defects in composite materials. It discusses how manufacturing defects are produced and how they affect the performance of composite materials. Serves as the only book to bring knowledge on manufacturing and failure modeling together in a coherent manner. Guides readers on mechanisms-based modeling with a focus on defects. Treats statistical simulation of microstructure with defects aimed at physical modeling. Covers manufacturing methods for polymer matrix composites. Describes failure modes in unidirectional composites and laminates in the presence of defects. Discusses fatigue damage in the presence of defects. This book is aimed at researchers in industry and academia in aerospace engineering, mechanical engineering, and materials science and engineering. It also serves as a reference for students taking advanced courses in composite materials.
Self Healing Composites
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Author : Guoqiang Li
language : en
Publisher: John Wiley & Sons
Release Date : 2014-11-17
Self Healing Composites written by Guoqiang Li and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-11-17 with Technology & Engineering categories.
In this book, the self-healing of composite structures with shape memory polymer as either matrix or embedded suture is systematically discussed. Self-healing has been well known in biological systems for many years: a typical example is the self-healing of human skin. Whilst a minor wound can be self-closed by blood clotting, a deep and wide cut needs external help by suturing. Inspired by this observation, this book proposes a two-step close-then-heal (CTH) scheme for healing wide-opened cracks in composite structures–by constrained shape recovery first, followed by molecular healing. It is demonstrated that the CTH scheme can heal wide-opened structural cracks repeatedly, efficiently, timely, and molecularly. It is believed that self-healing represents the next-generation technology and will become an engineering reality in the near future. The book consists of both fundamental background and practical skills for implementing the CTH scheme, with additional focus on understanding strain memory versus stress memory and healing efficiency evaluation under various fracture modes. Potential applications to civil engineering structures, including sealant for bridge decks and concrete pavements, and rutting resistant asphalt pavements, are also explored. This book will help readers to understand this emerging field, and to establish a framework for new innovation in this direction. Key features: explores potential applications of shape memory polymers in civil engineering structures, which is believed to be unique within the literature balanced testing and mathematical modeling, useful for both academic researchers and practitioners the self-healing scheme is based on physical change of polymers and is written in an easy to understand style for engineering professionals without a strong background in chemistry