Modelling And Simulation Of Inelastic Phenomena In The Material Behaviour Of Steel During Heat Treatment Processes

Author : Simone Bökenheide
Publisher : Unknown
Page : 0 pages
File Size : 47,8 Mb
Release : 2015
Category : Metals
ISBN : 3832540997

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Modelling and Simulation of Inelastic Phenomena in the Material Behaviour of Steel During Heat Treatment Processes by Simone Bökenheide Pdf

This work deals with the mathematical modelling of material behaviour of steel during heat treatment. In the case of inelastic material behaviour, the underlying system of equations is non-linear and its equations are coupled. Therefore, the description and modelling of inelastic phenomena is especially challenging. The aim of this thesis is to model the material behaviour of steel during heating and austenitisation taking into account creep and transformation-induced plasticity. We obtain a coupled system of partial and ordinary differential equations for temperature, phase fractions and mechanical deformations. We deal with the solving of the system as well as with the implementation of the model equations. A numerical algorithm is developed in order to solve the coupled system of equations involving the inelastic quantities. Furthermore, the presented models are used to identify certain material parameters. We present results of 3D simulations of the heat treatment of a workpiece and study the material behaviour during different heat treatment scenarios. The implementation of the model equations was carried out with the open source Finite Element Toolbox ALBERTA. We validate the 3D model by means of experimental data from workpiece experiments. Another important part of this work covers the topic of multi-mechanism models. The idea of this approach is to decompose the inelastic part of the total strain into several parts, also referred to as mechanisms. We develop a two-mechanism model for creep and TRIP arising simultaneously and discuss thermodynamic consistency.

Author : Konstantin Naumenko,Marcus Aßmus
Publisher : Springer
Page : 558 pages
File Size : 46,8 Mb
Release : 2016-05-12
Category : Science
ISBN : 9789811009594

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Advanced Methods of Continuum Mechanics for Materials and Structures by Konstantin Naumenko,Marcus Aßmus Pdf

This volume presents a collection of contributions on advanced approaches of continuum mechanics, which were written to celebrate the 60th birthday of Prof. Holm Altenbach. The contributions are on topics related to the theoretical foundations for the analysis of rods, shells and three-dimensional solids, formulation of constitutive models for advanced materials, as well as development of new approaches to the modeling of damage and fractures.

Author : Anonim
Publisher : Newnes
Page : 5485 pages
File Size : 50,6 Mb
Release : 2014-04-07
Category : Technology & Engineering
ISBN : 9780080965338

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Comprehensive Materials Processing by Anonim Pdf

Comprehensive Materials Processing, Thirteen Volume Set provides students and professionals with a one-stop resource consolidating and enhancing the literature of the materials processing and manufacturing universe. It provides authoritative analysis of all processes, technologies, and techniques for converting industrial materials from a raw state into finished parts or products. Assisting scientists and engineers in the selection, design, and use of materials, whether in the lab or in industry, it matches the adaptive complexity of emergent materials and processing technologies. Extensive traditional article-level academic discussion of core theories and applications is supplemented by applied case studies and advanced multimedia features. Coverage encompasses the general categories of solidification, powder, deposition, and deformation processing, and includes discussion on plant and tool design, analysis and characterization of processing techniques, high-temperatures studies, and the influence of process scale on component characteristics and behavior. Authored and reviewed by world-class academic and industrial specialists in each subject field Practical tools such as integrated case studies, user-defined process schemata, and multimedia modeling and functionality Maximizes research efficiency by collating the most important and established information in one place with integrated applets linking to relevant outside sources

Author : E. Busso,G. Cailletaud
Publisher : Unknown
Page : 452 pages
File Size : 42,9 Mb
Release : 1999
Category : Fracture mechanics
ISBN : UCSD:31822028140077

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3rd European Mechanics of Materials Conference on Mechanics and Multi-Physics Processes in Solids by E. Busso,G. Cailletaud Pdf

Author : Lars-Erik Lindgren
Publisher : Elsevier
Page : 246 pages
File Size : 42,9 Mb
Release : 2014-01-23
Category : Computers
ISBN : 9781845693558

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Computational Welding Mechanics by Lars-Erik Lindgren Pdf

Computational welding mechanics (CWM) provides an important technique for modelling welding processes. Welding simulations are a key tool in improving the design and control of welding processes and the performance of welded components or structures. CWM can be used to model phenomena such as heat generation, thermal stresses and large plastic deformations of components or structures. It also has a wider application in modelling thermomechanical and microstructural phenomena in metals. This important book reviews the principles, methods and applications of CWM. The book begins by discussing the physics of welding before going on to review modelling methods and options as well as validation techniques. It also reviews applications in areas such as fatigue, buckling and deformation, improved service life of components and process optimisation. Some of the numerical methods described in the book are illustrated using software available from the author which allows readers to explore CWM in more depth. Computational welding mechanics is a standard work for welding engineers and all those researching welding processes and wider thermomechanical and microstructural phenomena in metals. Highlights the principles, methods and applications of CWM Discusses the physics of welding Assesses modelling methods and validation techniques

Author : Anonim
Publisher : Unknown
Page : 704 pages
File Size : 52,7 Mb
Release : 1995
Category : Aeronautics
ISBN : UIUC:30112050127304

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Scientific and Technical Aerospace Reports by Anonim Pdf

Author : Qigui Wang
Publisher : Wiley
Page : 450 pages
File Size : 49,7 Mb
Release : 2014-08-25
Category : Technology & Engineering
ISBN : 1118398092

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Computational Modeling and Simulation of Heat Treatment for Metal Alloy by Qigui Wang Pdf

A comprehensive evaluation of the modeling of heat treatment processes The book summarizes the current achievements on numerical modeling for the heat treatment process, providing academic researchers and engineers with a comprehensive understanding, helping to realize the physical problems, improve the studies, optimize the operation, and enhance the quality of parts for the heat treatment process. The book summarizes years of the authors’ research work, and a systematic structure is presented for numerical modeling of heat treatment processes with the integration of multi-physics models stressed. It includes the thermal analysis, microstructural evolution, mechanical modeling, diffusion, compound formation, modeling of equipment and the concept of integration. It covers the fundamentals of simulation for heat treatment processes, illustrate physics-based models to the pertinent phenomena, and help the readers to have a general and comprehensive understanding to this field. Together with a small group of contributors, the authors present current research on: Thermal Modeling in Heat Treatment Processes; Microstructural Evolution for Steel and Aluminum; Mechanical Modeling; Diffusion and Compound Formation; Heat Treatment Equipment; Integration Modeling. Provides a systematic structure for the numerical modeling of heat treatment processes with integration of multi-physics models. Includes thermal analysis, microstructure evolution, mechanical modeling, diffusion, compound formation, modeling of equipments and the concept of integration Covers the fundamental technologies of heat treatment based on theory and experimental results, introducing computational simulation for such treatments which affect physical properties of metallic alloys Fully illustrated throughout and accompanied by a website to include supplementary papers, demo case files, programs and source code

Author : John G. Lenard
Publisher : Springer Science & Business Media
Page : 154 pages
File Size : 43,9 Mb
Release : 2013-04-17
Category : Technology & Engineering
ISBN : 9783642525155

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Modelling Hot Deformation of Steels by John G. Lenard Pdf

Computer Aided Engineering may be defined as an approach to solving tech nological problems in which most or all of the steps involved are automated through the use of computers, data bases and mathematical models. The success of this ap proach, considering hot forming, is tied very directly to an understanding of material behaviour when subjected to deformation at high temperatures. There is general agreement among engineers that not enough is known about that topic -and this gave the initial impetus for the project described in the present study. The authors secured a research grant from NATO (Special Research Grant #390/83) with a mandate to study the "State-of-the-Art of Controlled Rolling". What follows is the result of that study. There are five chapters in this Monograph. The first one, entitled "State-of-the Art of Controlled Rolling" discusses industrial and laboratory practices and research designed to aid in the development of microalloyed steels of superior quality. Follow ing this is the chapter "Methods of Determining Stress-Strain Curves at Elevated Temperatures". The central concern here is the material's resistance to deformation or in other words, its flow strength, the knowledge of which is absolutely essential for the efficient and economical utilization of the computers controlling the rolling process.

Author : ASM Heat Treating Society. Conference and Exposition
Publisher : ASM International(OH)
Page : 688 pages
File Size : 41,7 Mb
Release : 2000
Category : Science
ISBN : UOM:39015050737801

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Heat Treating by ASM Heat Treating Society. Conference and Exposition Pdf

Papers from a November 1999 meeting examine heat treating and associated industries, touching on aspects of control of microstructure through heat treatment, equipment and processes, forge heating with induction, quenching and distortion, and steel heat treating in the new millennium. Subjects inclu

Author : Anonim
Publisher : Unknown
Page : 448 pages
File Size : 55,6 Mb
Release : 1999
Category : Physics
ISBN : UOM:39015049369211

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Journal de physique by Anonim Pdf

Author : Konstantin Naumenko,Holm Altenbach
Publisher : Springer
Page : 371 pages
File Size : 51,9 Mb
Release : 2016-05-11
Category : Science
ISBN : 9783319316291

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Modeling High Temperature Materials Behavior for Structural Analysis by Konstantin Naumenko,Holm Altenbach Pdf

This monograph presents approaches to characterize inelastic behavior of materials and structures at high temperature. Starting from experimental observations, it discusses basic features of inelastic phenomena including creep, plasticity, relaxation, low cycle and thermal fatigue. The authors formulate constitutive equations to describe the inelastic response for the given states of stress and microstructure. They introduce evolution equations to capture hardening, recovery, softening, ageing and damage processes. Principles of continuum mechanics and thermodynamics are presented to provide a framework for the modeling materials behavior with the aim of structural analysis of high-temperature engineering components.

Author : Maciej Pietrzyk,L. Cser,J.G. Lenard
Publisher : Elsevier
Page : 377 pages
File Size : 50,9 Mb
Release : 1999-07-05
Category : Computers
ISBN : 9780080525686

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Mathematical and Physical Simulation of the Properties of Hot Rolled Products by Maciej Pietrzyk,L. Cser,J.G. Lenard Pdf

The objective of this publication is to comprehensively discuss the possibilities of producing steels with pre-determined attributes, demanded by the customer to fit exacting specifications. The information presented in the book has been designed to indicate the reasons for the expenses and to aid in the process of overcoming the difficulties and reducing the costs. In nine detailed chapters, the authors cover topics including: • steel as a major contributor to the economic wealth of a country in terms of its capabilities and production • current concerns of major steel producers • phenomena contributing to the quality of the product • information concerning the boundary conditions of the rolling process and initial conditions, put to use by mathematical models • the solid state incremental approach and flow formulation • parameters and variables - most of which make use of the exponential nature of phenomena that are activated by thermal energy • the application of three dimensional analysis to shape rolling • the evaluation of parameters by a form of inverse analysis to the flat rolling process • knowledge based modeling, using artificial intelligence, expert systems and neural networks They conclude that when either mathematical or physical modeling of the rolling process is considered and the aim is to satisfy the demands for customers, it is possible to produce what the customer wants, exactly.

Author : Jang Hyun Sung,Chan Gyu Lee,Yong Zoo You,Young Kook Lee,Jae Young Kim
Publisher : Trans Tech Publications Ltd
Page : 700 pages
File Size : 40,8 Mb
Release : 2006-12-15
Category : Technology & Engineering
ISBN : 9783038130819

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Heat Treatment of Materials by Jang Hyun Sung,Chan Gyu Lee,Yong Zoo You,Young Kook Lee,Jae Young Kim Pdf

The 3rd Asian Conference on the Heat Treatment of Materials (AHTM’05) provided a forum within which engineers, scientists, researchers and production managers could review and discuss recent progress and emerging topics in the fields of Advanced Heat Treatment and Surface Engineering Technology. Volume is indexed by Thomson Reuters CPCI-S (WoS). General topics, and various R&D efforts related to heat treatment and surface engineering, were also covered at the Conference.

Author : Cemil Hakan Gur,Jiansheng Pan
Publisher : CRC Press
Page : 754 pages
File Size : 50,6 Mb
Release : 2008-12-22
Category : Technology & Engineering
ISBN : 9781420003581

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Handbook of Thermal Process Modeling Steels by Cemil Hakan Gur,Jiansheng Pan Pdf

An Emerging Tool for Pioneering Engineers Co-published by the International Federation of Heat Treatment and Surface Engineering.Thermal processing is a highly precise science that does not easily lend itself to improvements through modeling, as the computations required to attain an accurate prediction of the microstructure and properties of work

Author : E. J. Mittemeijer,Johann Grosch
Publisher : Unknown
Page : 466 pages
File Size : 51,8 Mb
Release : 2000
Category : Technology & Engineering
ISBN : UOM:39015053757582

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Progress in Heat Treatment and Surface Engineering by E. J. Mittemeijer,Johann Grosch Pdf