Modelling Of Plasticity And Fracture Behaviors Of Dual Phase Steel

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Modelling of Plasticity and Fracture Behaviors of Dual-phase Steel

Author : Yuliang Hou
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (972 download)

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Book Synopsis Modelling of Plasticity and Fracture Behaviors of Dual-phase Steel by : Yuliang Hou

Download or read book Modelling of Plasticity and Fracture Behaviors of Dual-phase Steel written by Yuliang Hou and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dual-phase (DP) steel has been developed by automotive industry for the purpose of weight reduction, improvement in safety performance and fuel efficiency. Usually, DP steel contains hard martensite islands embedded in a soft ferrite matrix. Synergy between these two phases with the inhomogeneous microstructure exhibits excellent mechanical properties. The mechanical properties (plasticity and damage behaviors) of DP steel are mostly derived from its microstructure, e.g., volume fraction, size, distribution and morphology of each constituent phase. Micromechanical approaches are vastly applied to predict plasticity and other mechanical properties of DP steel under various loading scenarios. In this work, micromechanical modelling of DP steel has been performed using real or artificial microstructures. A real microstructure is obtained from metallographic image, while an artificial microstructure generator with an enhanced phase assignment algorithm based on material topology optimization is proposed to investigate the mechanical properties. In this artificial generator, phase assignment process is performed on a modified Voronoï tessellation to achieve the tailored representative volume element (RVE) with a good convergence. The proposed method also includes a proper orthogonal decomposition (POD) reduction of flow curves (snapshots), which are computed using the asymptotic extension homogenization (AEH) scheme, to identify the optimal controlling parameters for DP steel. This numerical method is verified using DP590 and DP980 steels that indicate a good agreement with the flow stress from measurements and RVE prediction based on real microstructures. Predictions of plastic strain patterns including shear bands using the artificial microstructure closely resemble the actual mechanical behavior under similar loading conditions. Moreover, an interpolation has been adopted to obtain a correlation between these controlling parameters based on the identification for various DP steels. Additionally, a bi-level reduced surrogate model is developed and presented to identify the material parameters of the Mohr-Coulomb (MMC) fracture criterion. Using this method, the identification process becomes feasible with a limited number of experimental tests. The method combines local critical elements associated with global models. The surrogate model of fracture strain constructed using the diffuse approximation and the local elements, reduced the computational cost for searching material parameters. Global fracture simulations are performed to update the target fracture strain and to compute the corresponding failure onset displacement. Convincing results are obtained via successive application of design of experiment (DOE) and enhanced design space transformation algorithms. The proposed identification protocol is validated with DP590 steel. Robustness of the method is confirmed with different initial values. These numerical investigations provide new direction for multiscale simulations of the plasticity and damage behaviors of DP steel. Moreover, they efficiently contribute to bridge the gap between scientific research and engineering application of heterogeneous materials.

Crystal Plasticity Finite Element Methods

Author : Franz Roters
Publisher : John Wiley & Sons
ISBN 13 : 3527642099
Total Pages : 188 pages
Book Rating : 4.5/5 (276 download)

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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.

Proceedings of the 14th International Conference on the Technology of Plasticity - Current Trends in the Technology of Plasticity

Author : Katia Mocellin
Publisher : Springer Nature
ISBN 13 : 3031420934
Total Pages : 788 pages
Book Rating : 4.0/5 (314 download)

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Book Synopsis Proceedings of the 14th International Conference on the Technology of Plasticity - Current Trends in the Technology of Plasticity by : Katia Mocellin

Download or read book Proceedings of the 14th International Conference on the Technology of Plasticity - Current Trends in the Technology of Plasticity written by Katia Mocellin and published by Springer Nature. This book was released on 2023-09-19 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume highlights the latest advances, innovations, and applications in the field of metal forming, as presented by leading international researchers and engineers at the 14th International Conference on Technology of Plasticity (ICTP), held in Mandelieu-La Napoule, France on September 24-29, 2023. It covers a diverse range of topics such as manufacturing processes & equipment, materials behavior and characterization, microstructure design by forming, surfaces & interfaces, control & optimization, green / sustainable metal forming technologies, digitalization & AI in metal forming, multi-material processing, agile / flexible metal forming processes, forming of non-metallic materials, micro-forming and luxury applications. The contributions, which were selected by means of a rigorous international peer-review process, present a wealth of exciting ideas that will open novel research directions and foster multidisciplinary collaboration among different specialists.

Modelling of the Mechanical Properties of Dual Phase Steels Based on Microstructure

Author : Corinna Thomser
Publisher :
ISBN 13 : 9783832283131
Total Pages : 139 pages
Book Rating : 4.2/5 (831 download)

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Book Synopsis Modelling of the Mechanical Properties of Dual Phase Steels Based on Microstructure by : Corinna Thomser

Download or read book Modelling of the Mechanical Properties of Dual Phase Steels Based on Microstructure written by Corinna Thomser and published by . This book was released on 2009 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Microstructure and Texture in Steels

Author : Arunansu Haldar
Publisher : Springer Science & Business Media
ISBN 13 : 1848824548
Total Pages : 484 pages
Book Rating : 4.8/5 (488 download)

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Book Synopsis Microstructure and Texture in Steels by : Arunansu Haldar

Download or read book Microstructure and Texture in Steels written by Arunansu Haldar and published by Springer Science & Business Media. This book was released on 2009-09-03 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microstructure and Texture in Steels and Other Materials comprises a collection of articles pertaining to experimental and theoretical aspects of the evolution of crystallographic texture and microstructure during processing of steels and some other materials. Among the topics covered is the processing-microstructure-texture-property relationship in various kinds of steels, including the latest grade. Special emphasis has been given to introduce recent advances in the characterization of texture and microstructure, as well as modeling. The papers included are written by well-known experts from academia and industrial R and D, which will provide the reader with state-of-the-art, in-depth knowledge of the subject. With these attributes, Microstructure and Texture in Steels and Other Materials is expected to serve the cause of creating awareness of current developments in microstructural science and materials engineering among academic and R and D personnel working in the field.

Multiscale Modeling and Simulation of the Mechanical Behavior of the Dual Phase Steels

Author : Tarek Belgasam
Publisher :
ISBN 13 :
Total Pages : 186 pages
Book Rating : 4.:/5 (14 download)

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Book Synopsis Multiscale Modeling and Simulation of the Mechanical Behavior of the Dual Phase Steels by : Tarek Belgasam

Download or read book Multiscale Modeling and Simulation of the Mechanical Behavior of the Dual Phase Steels written by Tarek Belgasam and published by . This book was released on 2017 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this thesis is to investigate the relationship between microstructure properties and mechanical properties of dual phase (DP) steels to design advanced materials for automotive applications. In this research, a new effective analytical methodology that studies the influences and interactions of microstructure properties on the mechanical behavior of DP steels under different strain rates was developed. In this work, the plastic deformation of multiphase material with different microstructures including volume fraction and grain size of phases, and carbon content in DP steels etc., under different strain rates was investigated.

Microplasticity

Author : Charles J. McMahon
Publisher :
ISBN 13 :
Total Pages : 448 pages
Book Rating : 4.:/5 (359 download)

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Book Synopsis Microplasticity by : Charles J. McMahon

Download or read book Microplasticity written by Charles J. McMahon and published by . This book was released on 1968 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Work-hardening of dual-phase steel

Author : Rieger, Florian
Publisher : KIT Scientific Publishing
ISBN 13 : 3731505134
Total Pages : 202 pages
Book Rating : 4.7/5 (315 download)

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Book Synopsis Work-hardening of dual-phase steel by : Rieger, Florian

Download or read book Work-hardening of dual-phase steel written by Rieger, Florian and published by KIT Scientific Publishing. This book was released on 2016-07-01 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dual-phase steels exhibit good mechanical properties due to a microstructure of strong martensitic inclusions embedded in a ductile ferritic matrix. This work presents a two-scale model for the underlying work-hardening effects; such as the distinctly different hardening rates observed for high-strength dual-phase steels. The model is based on geometrically necessary dislocations and comprises the average microstructural morphology as well as a direct interaction between the constituents.

Analysis and Design of Marine Structures V

Author : C. Guedes Soares
Publisher : CRC Press
ISBN 13 : 1315685051
Total Pages : 814 pages
Book Rating : 4.3/5 (156 download)

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Book Synopsis Analysis and Design of Marine Structures V by : C. Guedes Soares

Download or read book Analysis and Design of Marine Structures V written by C. Guedes Soares and published by CRC Press. This book was released on 2015-03-11 with total page 814 pages. Available in PDF, EPUB and Kindle. Book excerpt: Analysis and Design of Marine Structures V contains the papers presented at MARSTRUCT 2015, the 5th International Conference on Marine Structures (Southampton, UK, 25-27 March 2015). The MARSTRUCT series of conferences started in Glasgow, UK in 2007, the second event of the series took place in Lisbon, Portugal (2009), while the third was in Hambur

Predicting the Flow and Failure Properties of Dual Phase Steel Using Finite Element and Phenomenological Models

Author : Arshdeepsingh Sardar
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (132 download)

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Book Synopsis Predicting the Flow and Failure Properties of Dual Phase Steel Using Finite Element and Phenomenological Models by : Arshdeepsingh Sardar

Download or read book Predicting the Flow and Failure Properties of Dual Phase Steel Using Finite Element and Phenomenological Models written by Arshdeepsingh Sardar and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Owing to the complexity of the mechanical response of Dual Phase (DP) steels, steel makers rely largely on experiments and trial-and-error approaches to develop new lines with higher strength and ductility in order to enable light weighting of automotive parts. Crucially, the flow and failure behaviors are intimately linked to the morphology of the microstructure. This thesis focuses on developing two approaches that use morphological features to predict the flow and failure behavior of DP Steels. In the local field approach, realistic microstructures are obtained through electron microscopy and used to construct a composite phase finite element model which is then subjected to uni-axial deformation. The second approach exploits phenomenological models to connect the deformation and failure at the microscopic level to the average mechanical response. Using basic microstructural features and flow behavior of the ferrite and martensite phases, the flow and failure behavior of DP Steels is estimated.

Ductile Fracture in Metal Forming

Author : Kazutake Komori
Publisher : Academic Press
ISBN 13 : 0128147733
Total Pages : 294 pages
Book Rating : 4.1/5 (281 download)

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Book Synopsis Ductile Fracture in Metal Forming by : Kazutake Komori

Download or read book Ductile Fracture in Metal Forming written by Kazutake Komori and published by Academic Press. This book was released on 2019-10-11 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ductile Fracture in Metal Forming: Modeling and Simulation examines the current understanding of the mechanics and physics of ductile fracture in metal forming processes while also providing an approach to micromechanical ductile fracture prediction that can be applied to all metal forming processes. Starting with an overview of different ductile fracture scenarios, the book then goes on to explain modeling techniques that predict a range of mechanical phenomena that can lead to ductile fracture. The challenges in creating micromechanical models are addressed alongside methods of applying these models to several common metal forming processes. This book is suitable for researchers working in mechanics of materials, metal forming, mechanical metallurgy, and plasticity. Engineers in R&D industries involved in metal forming such as manufacturing, aerospace, and automation will also find the book very useful. Explains innovative micromechanical modeling techniques for a variety of material behaviors Examines how these models can be applied to metal forming processes in practice, including blanking, arrowed cracks in drawing, and surface cracks in upset forging Provides a thorough examination of both macroscopic and microscopic ductile fracture theory

Automotive Steels

Author : Radhakanta Rana
Publisher : Woodhead Publishing
ISBN 13 : 0081006535
Total Pages : 481 pages
Book Rating : 4.0/5 (81 download)

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Book Synopsis Automotive Steels by : Radhakanta Rana

Download or read book Automotive Steels written by Radhakanta Rana and published by Woodhead Publishing. This book was released on 2016-11-26 with total page 481 pages. Available in PDF, EPUB and Kindle. Book excerpt: Automotive Steels: Design, Metallurgy, Processing and Applications explores the design, processing, metallurgy, and applications of automotive steels. While some sheet steels are produced routinely in high volume today, there have been significant advances in the use of steel in the automotive industry. This book presents these metallurgical and application aspects in a way that is not available in the current literature. The editors have assembled an international team of experts who discuss recent developments and future prospects for automotive steels, compiling essential reading for both academic and industrial metallurgists, automotive design engineers, and postgraduate students attending courses on the metallurgy of automotive materials. Presents recent developments on the design, metallurgy, processing, and applications of automotive steels Discusses automotive steels that are currently in the early stages of research, such as low-density and high modulus steels that are driving future development Covers traditional steels, advanced high strength steels, elevated Mn steels and ferrous composite materials

Plasticity

Author : Alexander Mendelson
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (135 download)

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Book Synopsis Plasticity by : Alexander Mendelson

Download or read book Plasticity written by Alexander Mendelson and published by . This book was released on 1983 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Causes of "shear Fracture" of Dual-phase Steels

Author : Ji-Hyun Sung
Publisher :
ISBN 13 :
Total Pages : 207 pages
Book Rating : 4.:/5 (695 download)

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Book Synopsis The Causes of "shear Fracture" of Dual-phase Steels by : Ji-Hyun Sung

Download or read book The Causes of "shear Fracture" of Dual-phase Steels written by Ji-Hyun Sung and published by . This book was released on 2010 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Dual Phase (DP) steels are a class of advanced high strength steel (AHSS) in increasing use for sheet formed automotive parts. In spite of attractive combinations of high strength, high ductility, and low cost, the widespread adoption of DP steels has been limited because practical die tryouts exhibit forming failures far earlier than predicted by standard industrial methods. These failures, often referred to as "shear fractures," occur in regions of high curvature and with little apparent necking, in contrast to "normal" or tensile fractures. Conventional wisdom attributes shear fractures to a postulated damage mechanism related to the special microstructure of DP steels. In order to reproduce, characterize, and analyze such fractures in a laboratory setting and to understand their origin of the inability to predict them, a novel draw-bend formability (DBF) test was devised based on displacement control. DP steels from several suppliers with tensile strengths ranging from 590 to 980 MPa were tested over a range of rates and bend ratios (R/t, inner bend radius / sheet thickness). The new DBF test reliably reproduced three kinds of fractures identified as Type I, II, and III, corresponding to tensile fracture, transitional fracture, and shear fracture, respectively. These tests revealed a surprising result: the occurrence of shear fractures increased at higher deformation rates. This degradation of formability was shown to be principally a result of deformation-induced heating, which is greatly accentuated for AHSS because of their high plastic energy absorption and commensurate high temperature increases, up to 100 degrees C. In order to understand and quantify the role of deformation-induced heating on plastic localization, temperatures were measured and simulated using a novel new empirical plasticity constitutive form describing the flow stress as a function of strain, strain-rate, and temperature. Designated the "H/V model", the new constitutive model consists of three multiplicative functions describing (a) strain hardening and its temperature sensitivity, (b) strain-rate sensitivity, and (c) temperature sensitivity. This form allows a natural transition from unbounded strain hardening at low temperatures toward saturation behavior at higher temperatures, consistent with many observations. Thermo-mechanical finite-element simulations using the H/V model confirmed its accuracy and the magnitude of the role on shear fracture. Failure types were predicted, as well as quantitative. For most of the DP steels tested, heating induced by deformation was identified as the dominant effect in producing unpredicted fractures. This is a result of standard industrial techniques that do not take non-isothermal effect into account, in particular constructing forming limit diagrams from low-speed / isothermal testing, and use of isothermal finite element modeling to analyze industrial sheet forming operations. Microstructural damage can also contribute to shear fracture, but it was a secondary factor for all but one of the alloys tested, in one test direction.

Ultra-low-Cycle Fatigue Failure of Metal Structures under Strong Earthquakes

Author : Liang-Jiu Jia
Publisher : Springer
ISBN 13 : 9811326614
Total Pages : 231 pages
Book Rating : 4.8/5 (113 download)

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Book Synopsis Ultra-low-Cycle Fatigue Failure of Metal Structures under Strong Earthquakes by : Liang-Jiu Jia

Download or read book Ultra-low-Cycle Fatigue Failure of Metal Structures under Strong Earthquakes written by Liang-Jiu Jia and published by Springer. This book was released on 2018-11-02 with total page 231 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents experimental results and theoretical advances in the field of ultra-low-cycle fatigue failure of metal structures under strong earthquakes, where the dominant failure mechanism is ductile fracture. Studies on ultra-low-cycle fatigue failure of metal materials and structures have caught the interest of engineers and researchers from various disciplines, such as material, civil and mechanical engineering. Pursuing a holistic approach, the book establishes a fundamental framework for this topic, while also highlighting the importance of theoretical analysis and experimental results in the fracture evaluation of metal structures under seismic loading. Accordingly, it offers a valuable resource for undergraduate and graduate students interested in ultra-low-cycle fatigue, researchers investigating steel and aluminum structures, and structural engineers working on applications related to cyclic large plastic loading conditions.

Material Forming

Author : Lukasz Madej
Publisher : Materials Research Forum LLC
ISBN 13 : 1644902478
Total Pages : 2163 pages
Book Rating : 4.6/5 (449 download)

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Book Synopsis Material Forming by : Lukasz Madej

Download or read book Material Forming written by Lukasz Madej and published by Materials Research Forum LLC. This book was released on 2023-04-25 with total page 2163 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings present papers on Additive Manufacturing, Composites Forming Processes, Extrusion and Drawing, Forging and Rolling, Formability of Metallic Materials, Friction and Wear in Metal Forming, Incremental and Sheet Metal Forming, Innovative Joining by Forming Technologies, Lionel Fourment MS on Optimization and Inverse Analysis in Forming, Machining and Cutting, Material Behavior Modelling, New and Advanced Numerical Strategies for Material Forming, Non-Conventional Processes, Polymer Processing and Thermomechanical Properties, Sustainability on Material Forming, and Property-Controlled Forming.

Dynamic Behavior of Materials

Author : Mikko Hokka
Publisher : Elsevier
ISBN 13 : 0323991548
Total Pages : 714 pages
Book Rating : 4.3/5 (239 download)

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Book Synopsis Dynamic Behavior of Materials by : Mikko Hokka

Download or read book Dynamic Behavior of Materials written by Mikko Hokka and published by Elsevier. This book was released on 2023-11-21 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dynamic Behavior of Materials: Fundamentals, Material Models, and Microstructure Effects provides readers with the essential knowledge and tools necessary to determine best practice design, modeling, simulation and application strategies for a variety of materials while also covering the fundamentals of how material properties and behavior are affected by material structure and high strain rates. The book examines the relationships between material microstructure and consequent mechanical properties, enabling the development of materials with improved performance and more effective design of parts and components for high-rate applications. Sections cover the fundamentals of dynamic material behavior, with chapters studying dynamic elasticity and wave propagation, dynamic plasticity of crystalline materials, ductile fracture, brittle fracture, adiabatic heating and strain localization, response to shock loading, various material characterization methods, such as the Hopkinson Bar Technique, the Taylor Impact Experiment, different shock loading experiments, recent advances in dynamic material behavior, the dynamic behaviors of nanocrystalline materials, bulk metallic glasses, additively manufactured materials, ceramics, concrete and concrete-reinforced materials, geomaterials, polymers, composites, and biomaterials, and much more. Focuses on the relationship between material microstructure and resulting mechanical responses Covers the fundamentals, characterization methods, modeling techniques, applications and recent advances of the dynamic behavior of a broad array of materials Includes insights into manufacturing and processing techniques that enable more effective material design and application