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Odf Evolution Modelling For Polycrystals Experiencing Multiple Slip And Twinning With Finite Elements Over Orientation Space
Download Odf Evolution Modelling For Polycrystals Experiencing Multiple Slip And Twinning With Finite Elements Over Orientation Space full books in PDF, epub, and Kindle. Read online Odf Evolution Modelling For Polycrystals Experiencing Multiple Slip And Twinning With Finite Elements Over Orientation Space ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis ODF Evolution Modelling for Polycrystals Experiencing Multiple Slip and Twinning with Finite Elements Over Orientation Space by : Sergey Myagchilov
Download or read book ODF Evolution Modelling for Polycrystals Experiencing Multiple Slip and Twinning with Finite Elements Over Orientation Space written by Sergey Myagchilov and published by . This book was released on 1998 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1999 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :U.S. National Committee on Theoretical and Applied Mechanics Publisher :Pergamon ISBN 13 : Total Pages :450 pages Book Rating :4.3/5 (91 download)
Book Synopsis Research Trends in Solid Mechanics by : U.S. National Committee on Theoretical and Applied Mechanics
Download or read book Research Trends in Solid Mechanics written by U.S. National Committee on Theoretical and Applied Mechanics and published by Pergamon. This book was released on 1999 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hardbound. Solid mechanics is a basic scientific discipline which provides the theoretical foundation, experimental support, solution methodology and computational tools for analysis, design, construction, manufacture, and behavior prediction in service of many devices, machines, materials, structures and large complex systems that are essential to the existence and progress of an advanced civilization. It is concerned with both manmade, natural and living solid objects, and with all aspects of their physical behavior that affect their function, integrity or service life expectancy.The contents of this volume offer examples of some of the activities that are currently at the forefront of solid mechanics research, and also illustrate the vast reach of the discipline and of its interactions with other science and engineering endeavors.
Book Synopsis Polycrystal Simulations of Texture Evolution During Deformation Processing by :
Download or read book Polycrystal Simulations of Texture Evolution During Deformation Processing written by and published by . This book was released on 1998 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Some recent research on the hot deformation of aluminum alloys has indicated that at elevated temperatures, slip occurs on {110}110 systems in addition to the usual {111}110 systems active at lower temperatures. The effect of these additional slip systems on the texture evolution of aluminum single and polycrystals is studied using finite element simulations. The crystals are deformed in plane strain compression, and the constitutive response is modeled using crystal plasticity to track the reorientation of the crystals. By discretizing each crystal with a large number of elements, the non-uniform deformations due to local inhomogeneities and interactions with neighboring crystals are modeled. The resulting textures and microstructures are examined with regard to effect of including the additional systems, initial orientation of the single crystals, and stability of the cube orientation.
Book Synopsis Homogenization of the Linear and Non-linear Mechanical Behavior of Polycrystals by : Katja Jöchen
Download or read book Homogenization of the Linear and Non-linear Mechanical Behavior of Polycrystals written by Katja Jöchen and published by KIT Scientific Publishing. This book was released on 2014-05-13 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work is dedicated to the numerically efficient simulation of the material response of polycrystalline aggregates. Therefore, crystal plasticity is combined with a new non-linear homogenization scheme, which is based on piecewise constant stress polarizations with respect to a homogeneous reference medium and corresponds to a generalization of the Hashin-Shtrikman scheme. This mean field approach accounts for the one- and two-point statistics of the microstructure.
Book Synopsis Modelling Small Deformations of Polycrystals by : J. Gittus
Download or read book Modelling Small Deformations of Polycrystals written by J. Gittus and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: The scientific work of Jean Mandel has been exceptionally rich in the area of the mechanics of solids; the subjects which he has treated have been extremely diverse, from the theory of plasticity, buckling, soil mechanics, visco-elasticity, the theory of reduced models, and thermo dynamics, to percolation in porous media. But throughout this com prehensive work Jean Mandel has always maintained his interest in forming connections between the properties of materials (strength, deformability, viscosity) and the properties of their basic constituents. What is sometimes referred to in materials science as the transition from the microscopic to the macroscopic has for him been a very constant direction of research, which he never ceased to encourage in the Laboratoire de Mecanique des Solides of which he was the director. It is known that in the plasticity of metals permanent deformations must be sought in intercrystalline slip and more generally in disloca tions and the various microstructural defects. Before deformation of polycrystals is tackled, it is necessary to understand the mechanisms which take place within the crystal: the different systems of slip which may be activated and also the elementary mechanisms of twinning. Jean Mandel has shown how to make the transition from the behaviour of the single crystal to that of the polycrystal and has given the relation ships between the overall permanent deformation of the polycrystal and the plastic deformation of the single crystal.
Book Synopsis Texture and Anisotropy by : U. F. Kocks
Download or read book Texture and Anisotropy written by U. F. Kocks and published by Cambridge University Press. This book was released on 2000-08-15 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt: A successful book covering an important area of materials science, now available in paperback.
Book Synopsis Simulation of Large Deformation Response of Polycrystals, Deforming by Slip and Twinning, Using the Viscoplastic Ø-model by : Wei Wen
Download or read book Simulation of Large Deformation Response of Polycrystals, Deforming by Slip and Twinning, Using the Viscoplastic Ø-model written by Wei Wen and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The computation of the macroscopic response of polycrystalline aggregates from the properties of their single-crystal is a main problem in materials mechanics. During the mechanical deformation processing, all the grains in the polycrystalline material sample are reoriented. A crystallographic texture may thus be developed which is responsible for the material anisotropy. Therefore, the modeling of the texture evolution is important to predict the anisotropy effects present in industrial processes. The formulation of polycrystals plasticity has been the subject of many studies and different approaches have been proposed. Ahzi and M'Guil developed a viscoplastic phi-model. This model takes into account the grains interaction effects without involving the Eshelby inclusion problems.In this thesis, the phi-model was applied to different crystallographic structures and under different loading conditions. The mechanical twinning has been taken into account in the model. The FCC rolling texture transition from copper-type to brass-type texture is studied. The shear tests in FCC metals are also studied. The predicted results are compared with experimental shear textures for a range of metals having a high SFE to low SFE. For BCC metal, we compare our predicted results with those predicted by the VPSC model. We study the slip activities, texture evolutions and the evolution of yield loci. We also present a comparison with experimental textures from literatures for several BCC metals under cold rolling tests. The model has also been extended to HCP metals. We predict the deformation behavior of the magnesium alloy for different interaction strengths. We also compare our predicted results with experimental data from literatures. We show that the results predicted by the phi-model are in good agreement with the experimental ones.
Book Synopsis American Doctoral Dissertations by :
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1998 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Quantifying the Evolution of Crystal Stresses During Monotonic and Cyclic Loading Using Finite Element Simulations by : Su Leen Wong
Download or read book Quantifying the Evolution of Crystal Stresses During Monotonic and Cyclic Loading Using Finite Element Simulations written by Su Leen Wong and published by . This book was released on 2011 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt: The focus of the current work is on investigating the orientation dependent micromechanical response of face-centered cubic (fcc) polycrystals using crystal-based elastoplastic finite element simulations. This dissertation contains three related studies examining the evolution of the lattice strains and the crystal stresses in fcc polycrystalline aggregates subjected to monotonic and cyclic loading. These three studies, which can be read independently, are presented in Chapters 1, 2 and 3. Chapter 1 contains an investigation into the evolution of the orientation dependent lattice strain response in fcc polycrystals under monotonic tensile loading, particularly in the elastic-plastic transition regime leading up to fullydeveloped plasticity. The lattice strains, when plotted as a function of the macroscopic stress, begin to deviate from linear behavior in the elastic-plastic transition regime when certain sets of crystals begin yielding before others. It is demonstrated that the progression of yielding in different sets of crystals is influenced by a combination of the single crystal elastic and plastic anisotropies, which can be quantified by the directional strength-to-stiffness ratio [1]. Chapter 2 examines the evolution of the lattice strains and the crystal scale stress distributions in fcc polycrystals under fully-reversed, strain-controlled cyclic loading with respect to the concepts of the directional strength-to-stiffness ratio [1] and the vertices of the single crystal yield surface [2], which have previously only been applied to monotonic tensile loading. These two concepts are derived from the single crystal elastic and plastic anisotropic properties and are used to explain observed behaviors in the lattice strain response such as the size and shape of the lattice strain hysteresis loops. Chapter 3 presents a coordinated approach to quantifying the evolution of lattice strains in an AA7075-T6 aluminum alloy under in situ zero-tension cyclic loading using high-energy synchotron x-ray diffraction experiments and crystal-based finite element simulations. This dissertation involves only the computational aspect of this coordinated approach. Lattice Strain Pole Figures (SPFs) are constructed from both measured and computed lattice strains and comparisons are made at the same macroscopic stress on several cycles in the loading history. Trends in the evolution of crystal quantities such as the crystal stresses, slip system activity and the slip system strengths, which are available from the simulation data, are examined and explained in a consistent manner with respect to the single crystal yield surface topology. The final chapter, Chapter 4, is a brief summary of the preceding chapters highlighting the main contributions of this dissertation.
Book Synopsis Dislocation Mechanism-Based Crystal Plasticity by : Zhuo Zhuang
Download or read book Dislocation Mechanism-Based Crystal Plasticity written by Zhuo Zhuang and published by Academic Press. This book was released on 2019-04-12 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dislocation Based Crystal Plasticity: Theory and Computation at Micron and Submicron Scale provides a comprehensive introduction to the continuum and discreteness dislocation mechanism-based theories and computational methods of crystal plasticity at the micron and submicron scale. Sections cover the fundamental concept of conventional crystal plasticity theory at the macro-scale without size effect, strain gradient crystal plasticity theory based on Taylar law dislocation, mechanism at the mesoscale, phase-field theory of crystal plasticity, computation at the submicron scale, including single crystal plasticity theory, and the discrete-continuous model of crystal plasticity with three-dimensional discrete dislocation dynamics coupling finite element method (DDD-FEM). Three kinds of plastic deformation mechanisms for submicron pillars are systematically presented. Further sections discuss dislocation nucleation and starvation at high strain rate and temperature effect for dislocation annihilation mechanism. Covers dislocation mechanism-based crystal plasticity theory and computation at the micron and submicron scale Presents crystal plasticity theory without size effect Deals with the 3D discrete-continuous (3D DCM) theoretic and computational model of crystal plasticity with 3D discrete dislocation dynamics (3D DDD) coupling finite element method (FEM) Includes discrete dislocation mechanism-based theory and computation at the submicron scale with single arm source, coating micropillar, lower cyclic loading pillars, and dislocation starvation at the submicron scale
Download or read book Metals Abstracts written by and published by . This book was released on 1998 with total page 1042 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mechanics of Solids and Materials by : Robert Asaro
Download or read book Mechanics of Solids and Materials written by Robert Asaro and published by Cambridge University Press. This book was released on 2006-01-16 with total page 833 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanics of Solids and Materials intends to provide a modern and integrated treatment of the foundations of solid mechanics as applied to the mathematical description of material behavior. The 2006 book blends both innovative (large strain, strain rate, temperature, time dependent deformation and localized plastic deformation in crystalline solids, deformation of biological networks) and traditional (elastic theory of torsion, elastic beam and plate theories, contact mechanics) topics in a coherent theoretical framework. The extensive use of transform methods to generate solutions makes the book also of interest to structural, mechanical, and aerospace engineers. Plasticity theories, micromechanics, crystal plasticity, energetics of elastic systems, as well as an overall review of math and thermodynamics are also covered in the book.
Book Synopsis Texture Analysis in Materials Science by : H.-J. Bunge
Download or read book Texture Analysis in Materials Science written by H.-J. Bunge and published by Elsevier. This book was released on 2013-09-03 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt: Texture Analysis in Materials Science Mathematical Methods focuses on the methodologies, processes, techniques, and mathematical aids in the orientation distribution of crystallites. The manuscript first offers information on the orientation of individual crystallites and orientation distributions. Topics include properties and representations of rotations, orientation distance, and ambiguity of rotation as a consequence of crystal and specimen symmetry. The book also takes a look at expansion of orientation distribution functions in series of generalized spherical harmonics, fiber textures, and methods not based on the series expansion. The publication reviews special distribution functions, texture transformation, and system of programs for the texture analysis of sheets of cubic materials. The text also ponders on the estimation of errors, texture analysis, and physical properties of polycrystalline materials. Topics include comparison of experimental and recalculated pole figures; indetermination error for incomplete pole figures; and determination of the texture coefficients from anisotropie polycrystal properties. The manuscript is a dependable reference for readers interested in the use of mathematical aids in the orientation distribution of crystallites.
Book Synopsis Mechanical Properties of Uranium Plate by : George R. Caskey
Download or read book Mechanical Properties of Uranium Plate written by George R. Caskey and published by . This book was released on 1959 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Microstructural Modeling of CSL Grain-Boundary Effects and Crack Growth in F.C.C. Polycrystals by :
Download or read book Microstructural Modeling of CSL Grain-Boundary Effects and Crack Growth in F.C.C. Polycrystals written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A new multiple-slip rate-dependent crystalline constitutive formulation that is coupled to the evolutionary equations of mobile and immobile dislocation densities is developed. Dislocation densities were modeled as internal state variables that provide a more detailed microstructural description of the material's inelastic deformation and interrelated physical mechanisms that control different failure modes. Specialized microstructurally-based finite-element schemes have been used to investigate the effects of crystallographic orientations of the grains and grain-boundaries (GBs), grain shape and size, (GB) misorientation and the dependency of GB strength and mechanical properties on specific CSL misorientations on the inelastic finite deformation and failure mode mechanisms in f.c.c. polycrystalline aggregates. A Voronoi algorithm was used to generate grains and GBs with random shapes and sizes. The combined effects of GB misorientation, structure and geometry, strain hardening, localized plastic shear slip, intensive regions of crystal lattice rotation and the evolution, interaction and accumulation of dislocation densities on the nucleation and growth of intergranular and transgranular failure modes in f.c.c. polycrystalline aggregates were studied. Results from this study are consistent with experimental observations that microstructures with desired material properties, such as resistivity to crack nucleation, can be achieved by the control of the crystallographic orientation distribution of the grain aggregate and CSL GB orientations. Results from this study show that transgranular failure modes are dominant in aggregates with a high frequency of Sigma-3 GBs, and intergranular fracture modes dominate the aggregate with a high frequency of Sigma-17b GBs.
