Download or read book IUTAM Symposium on Multiscale Modelling of Fatigue Damage and Fracture in Smart Materials written by Meinhard Kuna and published by Springer Science & Business Media. This book was released on 2010-11-12 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Today, multi-functional materials such as piezoelectric/ferroelectric ceramics, magneto-strictive and shape memory alloys are gaining increasing applications as sensors, actuators or smart composite materials systems for emerging high tech areas. The stable performance and reliability of these smart components under complex service loads is of paramount practical importance. However, most multi-functional materials suffer from various mechanical and/or electro-magnetical degra-dation mechanisms as fatigue, damage and fracture. Therefore, this exciting topic has become a challenge to intensive international research, provoking the interdisciplinary approach between solid mechanics, materials science and physics. This book summarizes the outcome of the above mentioned IUTAM-symposium, assembling contributions by leading scientists in this area. Particularly, the following topics have been addressed: (1) Development of computational methods for coupled electromechanical field analysis, especially extended, adaptive and multi-level finite elements. (2) Constitutive modeling of non-linear smart material behavior with coupled electric, magnetic, thermal and mechanical fields, primarily based on micro-mechanical models. (3) Investigations of fracture and fatigue in piezoelectric and ferroelectric ceramics by means of process zone modeling, phase field simulation and configurational mechanics. (4) Reliability and durability of sensors and actuators under in service loading by alternating mechanical, electrical and thermal fields. (5) Experimental methods to measure fracture strength and to investigate fatigue crack growth in ferroelectric materials under electromechanical loading. (6) New ferroelectric materials, compounds and composites with enhanced strain capabilities.
Download or read book IUTAM Symposium on Multiscale Modelling of Damage and Fracture Processes in Composite Materials written by Tomasz Sadowski and published by Springer Science & Business Media. This book was released on 2006-07-06 with total page 295 pages. Available in PDF, EPUB and Kindle. Book excerpt: Integrating macroscopic properties with observations at lower levels, this book details advances in multiscale modelling and analysis pertaining to classes of composites which either have a wider range of relevant microstructural scales, such as metals, or do not have a very well-defined microstructure, e.g. cementitious or ceramic composites. The IUTAM symposia proceedings provide a platform for extensive further discussion and research.
Download or read book Advances in Extended and Multifield Theories for Continua written by Bernd Markert and published by Springer Science & Business Media. This book was released on 2011-07-15 with total page 231 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern computational techniques, such as the Finite Element Method, have, since their development several decades ago, successfully exploited continuum theories for numerous applications in science and technology. Although standard continuum methods based upon the Cauchy-Boltzmann continuum are still of great importance and are widely used, it increasingly appears that material properties stemming from microstructural phenomena have to be considered. This is particularly true for inhomogeneous load and deformation states, where lower-scale size effects begin to affect the macroscopic material response; something standard continuum theories fail to account for. Following this idea, it is evident that standard continuum mechanics has to be augmented to capture lower-scale structural and compositional phenomena, and to make this information accessible to macroscopic numerical simulations.
Download or read book Recent Trends in Fracture and Damage Mechanics written by Geralf Hütter and published by Springer. This book was released on 2015-09-01 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers a wide range of topics in fracture and damage mechanics. It presents historical perspectives as well as recent innovative developments, presented by peer reviewed contributions from internationally acknowledged authors. The volume deals with the modeling of fracture and damage in smart materials, current industrial applications of fracture mechanics, and it explores advances in fracture testing methods. In addition, readers will discover trends in the field of local approach to fracture and approaches using analytical mechanics. Scholars in the fields of materials science, engineering and computational science will value this volume which is dedicated to Meinhard Kuna on the occasion of his 65th birthday in 2015. This book incorporates the proceedings of an international symposium that was organized to honor Meinhard Kuna’s contributions to the field of theoretical and applied fracture and damage mechanics.
Download or read book Fracture Mechanics of Electrically Passive and Active Composites with Periodic Cracking along the Interface written by Sergey Kozinov and published by Springer Nature. This book was released on 2020-03-21 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a comprehensive and timely review of the fracture behavior of bimaterial composites consisting of periodically connected components, i.e. of bimaterial composites possessing periodical cracks along the interface. It first presents an overview of the literature, and then analyzes the isotropic, anisotropic and piezoelectric/dielectric properties of bimaterial components, gradually increasing the difficulty of the solutions discussed up to the coupled electromechanical problems. While in the case of isotropic and anisotropic materials it covers the problems generated by an arbitrary set of cracks, for the piezoelectric materials it focuses on studying the influence of the electric permittivity of the crack’s filler, using not only a simple, fully electrically permeable model, but also a physically realistic, semi-permeable model. Throughout the analyses, the effects of the contact of the crack faces are taken into account so as to exclude the physically unrealistic interpenetration of the composite components that are typical of the classical open model. Further, the book derives and examines the mechanical and electromechanical fields, stress and electric intensity factors in detail. Providing extensive information on the fracture processes taking place in composite materials, the book helps readers become familiar with mathematical methods of complex function theory for obtaining exact analytical solutions.
Download or read book Advanced Mechanics of Piezoelectricity written by Qinghua Qin and published by Springer Science & Business Media. This book was released on 2012-11-29 with total page 339 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Advanced Mechanics of Piezoelectricity" presents a comprehensive treatment of piezoelectric materials using linear electroelastic theory, symplectic models, and Hamiltonian systems. It summarizes the current state of practice and presents the most recent research findings in piezoelectricity. It is intended for researchers and graduate students in the fields of applied mechanics, material science and engineering, computational engineering, and aerospace engineering. Dr. Qinghua Qin is a professor at the School of Engineering, Australian National University, Australia.
Download or read book Plasticity and Beyond written by Jörg Schröder and published by Springer Science & Business Media. This book was released on 2013-09-20 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book presents the latest findings in experimental plasticity, crystal plasticity, phase transitions, advanced mathematical modeling of finite plasticity and multi-scale modeling. The associated algorithmic treatment is mainly based on finite element formulations for standard (local approach) as well as for non-standard (non-local approach) continua and for pure macroscopic as well as for directly coupled two-scale boundary value problems. Applications in the area of material design/processing are covered, ranging from grain boundary effects in polycrystals and phase transitions to deep-drawing of multiphase steels by directly taking into account random microstructures.
Download or read book Ferroelectrics written by Mickaël Lallart and published by BoD – Books on Demand. This book was released on 2011-08-23 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ferroelectric materials have been and still are widely used in many applications, that have moved from sonar towards breakthrough technologies such as memories or optical devices. This book is a part of a four volume collection (covering material aspects, physical effects, characterization and modeling, and applications) and focuses on the characterization of ferroelectric materials, including structural, electrical and multiphysic aspects, as well as innovative techniques for modeling and predicting the performance of these devices using phenomenological approaches and nonlinear methods. Hence, the aim of this book is to provide an up-to-date review of recent scientific findings and recent advances in the field of ferroelectric system characterization and modeling, allowing a deep understanding of ferroelectricity.
Download or read book IUTAM Symposium on Multiscale Modelling of Damage and Fracture Processes in Composite Materials written by Symposium On Multiscale Modelling of Iutam and published by . This book was released on 2006 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: Helps to understand the basic principles of damage growth and fracture processes in cementitious, ceramic, polymer and metal matrix composites.
Download or read book IUTAM written by Peter Eberhard and published by Springer. This book was released on 2016-07-20 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents extensive information related to the history of IUTAM. The initial chapters focus on IUTAM’s history and selected organizational aspects. Subsequent chapters provide extensive data and statistics, while the closing section showcases photos from all periods of the Union’s history. The history of IUTAM, the International Union on Theoretical and Applied Mechanics, began at a conference in 1922 in Innsbruck, Austria, where von Kármán put forward the idea of an international congress including the whole domain of applied mechanics. In 1946 IUTAM was then formally launched in Paris/France. IUTAM has since time organized more than 24 world congresses and 380 symposia, representing all fields of mechanics and highlighting advances by prominent international researchers. The efforts of IUTAM and its about 50 member countries serve to promote the mechanical sciences and the advancement of human society, addressing many key challenges. In this context, IUTAM preserves important traditions while at the same time recognizing new challenges and adapting its structures and processes accordingly. The first edition of this book was published in 1988. This new book now offers an updated and completely revised edition reflecting the substantial developments in the interim.
Download or read book IUTAM Symposium on Multiscale Modeling and Characterization of Elastic Inelastic Behavior of Engineering Materials Held in Marrakech Morocco on October 20 25 2002 written by and published by . This book was released on 2002 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt: The topics presented were wide ranging and included many aspects of deformation and fracture in a variety of materials. Among the areas that were: Developments on the constitutive connections for inelastic deformation of crystalline media, using atomistic approaches to processes such as cross slip of dislocations, but more often using dislocation models of plastic flow through formalisms of dislocation dynamics but also using models of collective dislocation activity to model incipient patterning and strain hardening. Development of deformation textures in polycrystals. Problems involving strain gradient plasticity on the sub-micron scale. Problems involving twinning in crystal plasticity and in the context of shape memory behavior. Plasticity of amorphous and semi crystalline polymers. Plasticity and fracture-related damage development in heterogeneous materials, granular materials, and composites, including the role of grain boundaries. Problems involving fracture and its mechanisms ranging from brittle cleavage to ductile cavitational forms and brittle to ductile fracture transitions, as well as in cyclic deformations. A large number of other topics related to the general theme were also presented in both the main sessions and in the poster presentations.
Download or read book Proceedings of the 17th International Conference on New Trends in Fatigue and Fracture written by Ricardo R. Ambriz and published by Springer. This book was released on 2017-11-17 with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the proceedings of one of the major conferences in fatigue, fracture and structural integrity (NT2F). The papers are organized and divided in five different themes: fatigue and fracture mechanics of structures and advanced materials; fatigue and fracture in pressure vessels and pipelines: mechanical behavior and structural integrity of welded, bonded and bolted joints; residual stress and environmental effects on the fatigue behavior; and simulation methods, analytical and computation models in fatigue and fracture.
Download or read book IUTAM Symposium on Modelling Nanomaterials and Nanosystems written by R. Pyrz and published by Springer Science & Business Media. This book was released on 2008-12-21 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent interest in nanotechnology is challenging the community to analyse, develop and design nanometer to micrometer-sized devices for applications in new generations of computer, electronics, photonics and drug delivery systems. To successfully design and fabricate novel nanomaterials and nanosystems, we must necessarily bridge the gap in our understanding of mechanical properties and processes at length scales ranging from 100 nanometers (where atomistic simulations are currently possible) to a micron (where continuum mechanics is experimentally validated). For this purpose the difficulties and complexity originate in the substantial differences in philosophy and viewpoints between conventional continuum mechanics and quantum theories. The challenge lies in how to establish the relationship between a continuum mechanical system and its atomistic counterpart in order to define continuum variables that are calculable within an atomic system.
Download or read book Multiscale Methods for Fatigue and Dynamic Fracture Failure and High performance Computing Implementation written by Rui Zhang and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation presents several multiscale methods for material failure and implementations on high-performance computing (HPC) platforms. The work is motivated by thechallenges in fully capturing the mechanics of failure using a single scale method. As such,multiscale approaches that incorporate multiple temporal and spatial scales have been established. To address the high computational costs, efficient algorithms and their implementations on the HPC platform featuring many-core architectures have been developed.Based on the topics being addressed, the dissertation is divided into two parts. First, a multiscale computational framework for high cycle fatigue (HCF) life prediction is establishedby integrating the Extended Space-Time Finite Element Method (XTFEM) with multiscalefatigue damage models. XTFEM is derived based on the time-discontinuous Galerkin approach, which is shown to be A-stable and high-order accurate. While the robustness ofXTFEM has been extensively demonstrated, the associated high computational cost remains a critical barrier for its practical applications. A novel hybrid iterative/direct solveris proposed with a unique preconditioner based on Kronecker product decomposition of thespace-time stiffness matrix. XTFEM is further accelerated by utilizing HPC platforms featuring a hierarchy of distributed- and shared-memory parallelisms. A two-scale damagemodel is coupled with XTFEM to capture nonlinear material behaviors under HCF loadingand accelerated by parallel computing using both CPUs and GPUs. Furthermore, an efficientdata-driven microstructure-based multiscale fatigue damage model is established by employing the Self-consistent Clustering Analysis, which is a reduced-order method derived fromMachine Learning. Robustness and efficiency of the framework are demonstrated throughbenchmark problems. HCF simulations are conducted to quantify key effects due to meanstress, multiaxial load conditions, and material microstructures.In the second part, a concurrent multiscale method to dynamic fracture is established bycoupling Peridynamics (PD) with the classical Continuum Mechanics (CCM). PD is a novelnonlocal generalization of CCM. It is governed by an integro-differential equation of motion,which is free of spatial derivatives. This salient feature makes it attractive for problemswith spatial discontinuities such as cracks. However, it generally leads to a much highercomputational cost due to its nonlocality. There is a continuing interest to couple PDwith CCM to improve efficiency while preserving accuracy in critical regions. In this work,Finite Element (FE) simulation is performed over the entire domain and coexists with alocal PD region where crack pre-exists or is expected to initiate. The coupling schemeis accomplished by a bridging-scale projection between the two scales and a class of twoway nonlocal matching boundary conditions that eliminates spurious wave reflections at thenumerical interface and transmits waves from the FE domain to the PD region. An adaptivescheme is established so that the PD region is dynamically relocated to track propagatingcrack. Accuracy and efficiency of the proposed method are illustrated by wave propagationexamples. Its effectiveness and robustness in material failure simulation are demonstratedby benchmark problems featuring brittle fracture.Finally, conclusions are drawn from the research work presented and prospective futuredevelopments of the established multiscale methods are provided.
Download or read book Computer Methods in Biomechanics and Biomedical Engineering written by J. Middleton and published by CRC Press. This book was released on 1996-03-18 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt: These papers are concerned with new advances and novel solutions in the areas of biofluids, image-guided surgery, tissue engineering and cardovascular mechanics, implant analysis, soft tissue mechanics, bone remodeling and motion analysis. The contents also feature a special section on dental materials, dental adhesives and orthodontic mechanics. This edition contains many examples, tables and figures, and together with the many references, provides the reader with invaluable information on the latest theoretical developments and applications.
Download or read book Fracture Mechanics of Piezoelectric Materials written by Qing-Hua Qin and published by Witpress. This book was released on 2001 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written with the aim of encouraging further development of the fracture mechanics of coupled thermo-electro-elastic problems, this monograph examines crack problems in piezoelectric materials. Emphasis is placed on fundamental concepts, the development of mathematical models and their computational solutions. The methods are described and derived in a way which makes them more accessible to postgraduate students, research scientists and engineers.
Download or read book Computational Methods for Fracture written by Timon Rabczuk and published by MDPI. This book was released on 2019-10-28 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a collection of 17 scientific papers about the computational modeling of fracture. Some of the manuscripts propose new computational methods and/or how to improve existing cutting edge methods for fracture. These contributions can be classified into two categories: 1. Methods which treat the crack as strong discontinuity such as peridynamics, scaled boundary elements or specific versions of the smoothed finite element methods applied to fracture and 2. Continuous approaches to fracture based on, for instance, phase field models or continuum damage mechanics. On the other hand, the book also offers a wide range of applications where state-of-the-art techniques are employed to solve challenging engineering problems such as fractures in rock, glass, concrete. Also, larger systems such as fracture in subway stations due to fire, arch dams, or concrete decks are studied.
