06008nam 2201561z- 450 991055744650332120220111(CKB)5400000000043275(oapen)https://directory.doabooks.org/handle/20.500.12854/76797(oapen)doab76797(EXLCZ)99540000000004327520202201d2021 |y 0engurmn|---annantxtrdacontentcrdamediacrrdacarrierCrystal Plasticity at Micro- and Nano-scale DimensionsBasel, SwitzerlandMDPI - Multidisciplinary Digital Publishing Institute20211 online resource (322 p.)3-0365-0874-0 3-0365-0875-9 The present collection of articles focuses on the mechanical strength properties at micro- and nanoscale dimensions of body-centered cubic, face-centered cubic and hexagonal close-packed crystal structures. The advent of micro-pillar test specimens is shown to provide a new dimensional scale for the investigation of crystal deformation properties. The ultra-small dimensional scale at which these properties are measured is shown to approach the atomic-scale level at which model dislocation mechanics descriptions of crystal slip and deformation twinning behaviors are proposed to be operative, including the achievement of atomic force microscopic measurements of dislocation pile-up interactions with crystal grain boundaries or with hard surface coatings. A special advantage of engineering designs made at such small crystal and polycrystalline dimensions is the achievement of an approximate order-of-magnitude increase in mechanical strength levels. Reasonable extrapolation of macro-scale continuum mechanics descriptions of crystal strength properties at micro- to nano-indentation hardness measurements are demonstrated, in addition to reports on persistent slip band observations and fatigue cracking behaviors. High-entropy alloy, superalloy and energetic crystal properties are reported along with descriptions of deformation rate sensitivities, grain boundary structures, nano-cutting, void nucleation/growth micromechanics and micro-composite electrical properties.Technology: general issuesbicsscab initio calculationsactivation volumealloysanisotropic elasticityanodeB2 phaseBCC Fe nanowiresbi-crystalcohesive strengthcompressionconversion reactioncopper single crystalcrack growthcrackingcrystal plasticity simulationscrystal plasticity theorycrystal size dependenciescrystal strengthcrystallographic slipcutting theorycyclic deformationde-twinningdiscrete dislocation pile-updislocationdislocation emissiondislocation modelsdislocation plasticitydislocationselastic propertiesfatiguefatigue crack initiationFeCrAlfracturefracture mechanicsfree surfacegeometrically necessary dislocationsgrain boundariesgrain boundarygrain growthHall-Petch relationhardnessHMXhydrogen embrittlementin situ electron microscopyIN718 alloyindentation creepindentation size effectinterfacial delaminationintermetallic compoundsinternal stressinternal stressesironkitagawa-takahashi diagramlattice distortive transformationslinear complexionslithium ion batterymagnesiummechanical propertymetals and alloysmicro-crystalsmicro-pillarmicromechanical testingmicropillarminiaturised testingmolecular dynamicsmolecular dynamics simulationmolecular dynamics simulationsmultiaxial loadingnano-crystalsnano-indentationnano-polycrystalsnano-wiresnanocrystallinenanocuttingnanoflowernanomaterialsnucleationpersistent slip bandphase-field simulationpile-upspillarsrafting behaviorrapid solidificationsize effectstrain hardeningstrain hardening behaviorstrain ratestrain rate sensitivitystrengthsurface hard coatingsynchrotron radiation X-ray diffractiontemperature effecttheoretical modelthermal stabilitytin sulfidetwin boundariestwinningultrafine-grained materialsvoid formationwhiskersTechnology: general issuesArmstrong Ronald Wedt1304460Elban Wayne LedtArmstrong Ronald WothElban Wayne LothBOOK9910557446503321Crystal Plasticity at Micro- and Nano-scale Dimensions3030270UNINA05393nam 22006855 450 991075507520332120251113195921.03-031-33580-510.1007/978-3-031-33580-8(MiAaPQ)EBC30832453(Au-PeEL)EBL30832453(DE-He213)978-3-031-33580-8(PPN)272914274(CKB)28572696400041(EXLCZ)992857269640004120231028d2023 u| 0engurcnu||||||||txtrdacontentcrdamediacrrdacarrierScalable Algorithms for Contact Problems /by Zdeněk Dostál, Tomáš Kozubek, Marie Sadowská, Vít Vondrák2nd ed. 2023.Cham :Springer International Publishing :Imprint: Springer,2023.1 online resource (447 pages)Advances in Mechanics and Mathematics,1876-9896 ;36Print version: Dostál, Zdeněk Scalable Algorithms for Contact Problems Cham : Springer International Publishing AG,c2023 9783031335792 Chapter. 1 Contact Problems and Their Solution -- Part. I. Basic Concepts -- Chapter. 2. Linear Algebra -- Chapter. 3. Optimization -- Chapter. 4. Analysis -- Part. II. Optimal QP and QCQP Algorithms -- Chapter. 5. Conjugate Gradients -- Chapter. 6. Gradient Projection for Separable Convex Sets -- Chapter. 7. MPGP for Separable QCQP -- Chapter. 8. MPRGP for Bound-Constrained QP -- Chapter. 9. Solvers for Separable and Equality QP/QCQP Problems -- Part. III. Scalable Algorithms for Contact Problems -- Chapter. 10. TFETI for Scalar Problems -- Chapter. 11. Frictionless Contact Problems -- Chapter. 12. Contact Problems with Friction -- Chapter. 13. Transient Contact Problems -- Chapter. 14. TBETI -- Chapter. 15. Hybrid TFETI and TBETI -- Chapter. 16. Mortars -- Chapter. 17. Preconditioning and Scaling -- Part. IV. Other Applications and Parallel Implementation -- Chapter. 18. Contact with Plasticity -- Chapter.19. Contact Shape Optimization -- Chapter. 20. Massively Parallel Implementation -- Notation and List of Symbols.This book presents a comprehensive treatment of recently developed scalable algorithms for solving multibody contact problems of linear elasticity. The brand-new feature of these algorithms is their theoretically supported numerical scalability (i.e., asymptotically linear complexity) and parallel scalability demonstrated in solving problems discretized by billions of degrees of freedom. The theory covers solving multibody frictionless contact problems, contact problems with possibly orthotropic Tresca’s friction, and transient contact problems. In addition, it also covers BEM discretization, treating jumping coefficients, floating bodies, mortar non-penetration conditions, etc. This second edition includes updated content, including a new chapter on hybrid domain decomposition methods for huge contact problems. Furthermore, new sections describe the latest algorithm improvements, e.g., the fast reconstruction of displacements, the adaptive reorthogonalization of dual constraints, and an updated chapter on parallel implementation. Several chapters are extended to give an independent exposition of classical bounds on the spectrum of mass and dual stiffness matrices, a benchmark for Coulomb orthotropic friction, details of discretization, etc. The exposition is divided into four parts, the first of which reviews auxiliary linear algebra, optimization, and analysis. The most important algorithms and optimality results are presented in the third chapter. The presentation includes continuous formulation, discretization, domain decomposition, optimality results, and numerical experiments. The final part contains extensions to contact shape optimization, plasticity, and HPC implementation. Graduate students and researchers in mechanical engineering, computational engineering, and applied mathematics will find this book of great value and interest.Advances in Mechanics and Mathematics,1876-9896 ;36MathematicsData processingEngineering mathematicsEngineeringData processingComputer scienceMathematicsComputational Mathematics and Numerical AnalysisMathematical and Computational Engineering ApplicationsMathematics of ComputingMathematicsData processing.Engineering mathematics.EngineeringData processing.Computer scienceMathematics.Computational Mathematics and Numerical Analysis.Mathematical and Computational Engineering Applications.Mathematics of Computing.620.440151Dostál Zdeněk0Kozubek Tomás1435909Sadowská Marie1435910Vondrák Vít1435911Brzobohatý Tomás1435912Horak David1435913Říha Lubomír1435914Vlach Oldrich1435915MiAaPQMiAaPQMiAaPQBOOK9910755075203321Scalable Algorithms for Contact Problems3593962UNINA