Download or read book Finite Element Analysis of Strip and Rolling Mills written by Jian-guo Cao and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Finite Element Analysis of Strip and Rolling Mills.

Download or read book High Quality Steel Rolling written by Vladimir B. Ginzburg and published by CRC Press. This book was released on 1993-02-23 with total page 880 pages. Available in PDF, EPUB and Kindle. Book excerpt: Emphasizing solutions to the problems of achieving tight tolerances of important geometrical parameters such as thickness, width, cross-sectional profile, and flatness, this reference focuses on the principles and applications of the latest technology for producing high-quality, flat-rolled steel products.;Illustrated with more than 700 drawings, High-Quality Steel Rolling: defines the geometrical parameters of flat-rolled products in both conventional and standardized forms; clalssifies the various types of transducers and sensors and provides definitions of basic metrological terms; examines thickness and width control in rolling mills, outlining the methods of width change by casting rolling, and pressing; discusses the theoretical aspects of roll deformation, roll thermal expansion, roll wear, and roll bending in relation to strip profile and flatness; reviews various control systems such as roll bending, roll shifting and roll crossing, as well as systems for utilizing rolls with specific profiles and flexible edge rolls; analyzes the main causes of imperfections in the performance of contemporary automatic control systems; and investigates new computer modeling capabilities for resolving problems in product quality.

Download or read book A Finite Element Analysis of a Rolling Mill Roll Neck Bearing written by Wayne Lemoine Hastings and published by . This book was released on 1981 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Finite Element Analysis of Air Flow for Cooling of Steel Rods in a High Speed Hot Rolling Mill written by Robert C. Farrell and published by . This book was released on 1991 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Finite Element Analysis written by Applied Research Applied Research Press and published by CreateSpace. This book was released on 2014-11-24 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt: Finite element analysis is an engineering method for the numerical analysis of complex structures. This book provides a bird's eye view on this very broad matter through 27 original and innovative research studies exhibiting various investigation directions. Through its chapters the reader will have access to works related to Biomedical Engineering, Materials Engineering, Process Analysis and Civil Engineering. The text is addressed not only to researchers, but also to professional engineers, engineering lecturers and students seeking to gain a better understanding of where Finite Element Analysis stands today. Chapters include: Finite Element Analysis on Strains of Viscoelastic Human Skull and Duramater, Application of Finite Element Analysis in Dentistry, Finite Element Analysis for Dental Prosthetic Design, Application of Finite Element Analysis in Root Canal Therapy, Finite element simulation. Applications in Orthopaedics and Traumatology, Finite Element Analysis in Orthopaedic Biomechanics, Orthopaedic Biomechanics: A Practical Approach to Combining Mechanical Testing and Finite Element Analysis, Finite Element Modeling for a Morphometric and Mechanical Characterization of Trabecular Bone from High Resolution Magnetic Resonance Imaging, Finite Element Modelling of Human Lumbar Spine, Analysis of Human Pressure Ulcer and Cushion Pads for Its Prevention, Microfinite Element Modeling for Evaluating Polymer Scaffolds Architecture and their Mechanical Properties from microComputed Tomography, Computational Modelling of Auxetics, Modelling of Thermoplastic Fibre-Composites and Finite Element Simulation of Mechanical Properties, Dynamic Finite Element Analysis of Nonlinear Isotropic Hyperelastic and Viscoelastic Materials for Thermoforming Applications, Finite Element Modelling of Elastic-Plastic Contact of Rough Surfaces, Numerical Study of Backward Extrusion Process Using Finite Element Method, Finite Element Analysis on V-Die Bending Process, Analysis of Welding Residual Stresses and Its Applications, Dynamic Finite Element Analysis on Underlay Microstructure of Cu/low-k Wafer during Wirebonding, Finite Element Analysis of Deformation and Fracture of Cylindrical Tubes under Internal Moving Pressures, FE Analysis of Evolution of Defects during Rolling, Finite Element Analysis of Strip and Rolling Mills, Strain Variations on Rolling Condition in Accumulative Roll-Bonding by Finite Element Analysis, Finite Element Analysis of Wall Deflection And Ground Movements Caused by Braced Excavations, Vehicle-Bridge Dynamic Interaction Using Finite Element Modelling, and Finite Element Modelling of Sound Transmission Loss in Reflective Pipe.

Download or read book Finite Element Analysis of Thin Steel Strip Wrap Around a Crown Roll written by Wan Tao A. Chu and published by . This book was released on 1997 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Primer on Flat Rolling written by John G. Lenard and published by Newnes. This book was released on 2013-12-04 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: Primer on Flat Rolling is a fully revised second edition, and the outcome of over three decades of involvement with the rolling process. It is based on the author's yearly set of lectures, delivered to engineers and technologists working in the rolling metal industry. The essential and basic ideas involved in designing and analysis of the rolling process are presented. The book discusses and illustrates in detail the three components of flat rolling: the mill, the rolled metal, and their interface. New processes are also covered; flexible rolling and accumulative roll-bonding. The last chapter contains problems, with solutions that illustrate the complexities of flat rolling. New chapters include a study of hot rolling of aluminum, contributed by Prof. M. Wells; advanced applications of the finite element method, by Dr. Yuli Liu and by Dr. G. Krallics; roll design by Dr. J. B. Tiley and the history of the development of hot rolling mills, written by Mr. D. R. Adair and E. B. Intong. Engineers, technologists and students can all use this book to aid their planning and analysis of flat rolling processes. Provides clear descriptions for engineers and technologists working in steel mills Evaluates the predictive capabilities of mathematical models Assignments and their solutions are included within the text

Download or read book Flat Rolled Steel Processes written by Vladimir B. Ginzburg and published by CRC Press. This book was released on 2009-05-28 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: Throughout the last two decades, the flat-steel production industry has experienced great success with the introduction of new technologies and manufacturing advances for both hot and cold steel-rolling. These improvements are resulting in significantly reduced production costs and better product quality. Recent consolidation of the steel industry-

Download or read book Finite Element Study of the Flat Strip Rolling Process Using a Deformable Roll Model written by Hany George Harmouch and published by . This book was released on 1995 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Analytical Method for Use in Optimizing Dimensional Quality in Hot and Cold Rolling Mills written by Arif S. Malik and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A device and method for prediction and/or control of the profile and/or shape of rolled metal strip. The device and method are compatible with both cluster-type and non cluster-type mills. The device and method employ a customized deflection model of the rolling mill, thereby combining the advantages of well-known finite element method with other relevant methods to allow real-time operation of the rolling mill without the computational complexities of such methods. In one form, the customized deflection model helps to obtain a compact, linear, and flexible analytical model with non-iterative solution, multiple continuous elastic foundations, third-order displacement fields, simple stress-field determination, and capability to compute dynamic deflection characteristics.

Download or read book Advanced Materials and Structural Engineering written by Jong Wan Hu and published by CRC Press. This book was released on 2016-02-03 with total page 996 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ICAMEST 2015 Conference covered new developments in advanced materials and engineering structural technology. Applications in civil, mechanical, industrial and material science are covered in this book. Providing high-quality, scholarly research, addressing developments, applications and implications in the field of structural health monitoring, construction safety and management, sensors and measurements. This volume contains new models for nonlinear structural analysis and applications of modeling identification. Furthermore, advanced chemical materials are discussed with applications in mechanical and civil engineering and for the maintenance of new materials. In addition, a new system of pressure regulating and water conveyance based on small and middle hydropower stations is discussed. An experimental investigation of the ultimate strength and behavior of the three types of steel tubular K-joints was presented. Furthermore, real-time and frequency linear and nonlinear modeling performance of materials of structures contents were concluded with the notion of a fully brittle material, and this approach is implemented in the book by outlining a finite-element method for the prediction of the construction performance and cracking patterns of arbitrary structural concrete forms. This book is an ideal reference for practicing engineers in material, mechanical and civil engineering and consultants (design, construction, maintenance), and can also be used as a reference for students in mechanical and civil engineering courses.

Download or read book Rolling Mill Optimization Using an Accurate and Rapid New Model For Mill Deflection and Strip Thickness Profile written by Arif Sultan Malik and published by . This book was released on 2007 with total page 131 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work presents improved technology for attaining high-quality rolled metal strip. The new technology is based on an innovative method to model both the static and dynamic characteristics of rolling mill deflection, and it applies equally to both cluster-type and non cluster-type rolling mill configurations. By effectively combining numerical Finite Element Analysis (FEA) with analytical solid mechanics, the devised approach delivers a rapid, accurate, flexible, high-fidelity model useful for optimizing many important rolling parameters. The associated static deflection model enables computation of the thickness profile and corresponding flatness of the rolled strip. Accurate methods of predicting the strip thickness profile and strip flatness are important in rolling mill design, rolling schedule set-up, control of mill flatness actuators, and optimization of ground roll profiles. The corresponding dynamic deflection model enables solution of the standard eigenvalue problem to determine natural frequencies and modes of vibration. The presented method for solving the roll-stack deflection problem offers several important advantages over traditional methods. In particular, it includes continuity of elastic foundations, non-iterative solution when using pre-determined elastic foundation moduli, continuous third-order displacement fields, simple stress-field determination, the ability to calculate dynamic characteristics, and a comparatively faster solution time. Consistent with the most advanced existing methods, the presented method accommodates loading conditions that represent roll crowning, roll bending, roll shifting, and roll crossing mechanisms. Validation of the static model is provided by comparing results and solution time with large-scale, commercial finite element simulations. In addition to examples with the common 4-high vertical stand rolling mill, application of the presented method to the most complex of rolling mill configurations is demonstrated with an optimization example involving the 20-high Sendzimir mill.

Download or read book Proceedings of the 8th Pacific Rim International Conference on Advanced Materials and Processing PRICM 8 written by FernD.S. Marquis and published by Springer. This book was released on 2017-03-21 with total page 3431 pages. Available in PDF, EPUB and Kindle. Book excerpt: PRICM-8 features the most prominent and largest-scale interactions in advanced materials and processing in the Pacific Rim region. The conference is unique in its intrinsic nature and architecture which crosses many traditional discipline and cultural boundaries. This is a comprehensive collection of papers from the 15 symposia presented at this event.

Download or read book Metal Forming and the Finite Element Method written by the late Shiro Kobayashi and published by Oxford University Press. This book was released on 1989-03-09 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: The application of computer-aided design and manufacturing techniques is becoming essential in modern metal-forming technology. Thus process modeling for the determination of deformation mechanics has been a major concern in research . In light of these developments, the finite element method--a technique by which an object is decomposed into pieces and treated as isolated, interacting sections--has steadily assumed increased importance. This volume addresses advances in modern metal-forming technology, computer-aided design and engineering, and the finite element method.

Download or read book An Efficient 3D Mathematical Model to Predict Structural Dynamics and Chatter in Cold Rolling Mills written by Akash Patel and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The research described in this dissertation aims to provide a highly efficient predictive computational tool to improve the dimensional quality of cold rolled metal strip, particularly for high-value, thin specialty alloys. The corresponding objectives of this work are to (1) understand the transfer of high-fidelity roll grinding errors that may generate complex geometric defects on the strip, and to investigate a novel method for correction of such defects; and (2) develop a highly efficient 3D dynamic predictive model for the time-history of mill and strip transient behavior, including highly damaging chatter vibrations. First, a novel approach that can potentially correct for high-fidelity geometric defects in cold rolled strip is proposed. High- fidelity flatness defects in thin cold-rolled strip that arise from highly localized thickness strain variations present an ongoing challenge to the metals industry. A primary cause of such defects, based on rolling practice, but for which the effects have not been rigorously investigated, may be the transfer of localized diameter deviations from the work rolls that arise from roll grinding errors due to grinding performance inaccuracies. The proposed research addresses the effects of high-fidelity roll diameter deviation transfer to the strip, as well as their correction. Parametric case studies are first undertaken using a 4-high mill to investigate the influences that roll diameter, strip reduction, strip width, and material strength have on the 3D transfer of high- fidelity work roll diameter deviations to the rolled sheet. The studies are conducted with an efficient 3D mathematical roll-stack model that predicts the associated high-fidelity strip thickness profile deviations using the simplified-mixed finite element method (SM-FEM). Reduction deviations, which strongly correlate to strip flatness/shape defects, are first quantified and analyzed to understand the transfer characteristics of localized work-roll grinding deviations relative to benchmarked perfectly smooth work rolls. Results of the study reveal that the high- fidelity transfer depends not only on the specific roll grinding deviation amplitude and mill loading, but also on the location of the roll diameter deviations along the roll face length due to non-negligible 3D bulk roll-stack deformations, as well as the effective stiffness ratio between the work roll and the strip. The inability of conventional flatness control devices to correct for high-fidelity roll diameter deviations is also demonstrated. Based on this work, suggested is a novel corrective approach to identify customized work roll grinding profiles that are tailored to strip with specific pre-existing high-fidelity defect patterns generated in previous rolling passes. Using the described SM-FEM modeling technique, high-fidelity "corrective" roll diameter profiles could eventually be applied in-situ during rolling, whereby the profiles are "engineered" to account for the predicted 3D mill deflections, contact force distributions, and coupled micro/macro scale deformation mechanics. Following investigation of the SM-FEM formulation to high-fidelity static problems involving the transfer of roll grinding error to the strip, the SM- FEM method is adapted to create a general purpose 3D structural dynamics model capable of predicting the transient behavior of the mill components and strip thickness profile geometry. Over the last three decades, computational models have been developed and employed in effort to understand dynamic disturbances in the rolling operation. Such disturbances can potentially lead to self-excitation (chatter vibrations) and result in significant gauge variations in the exit strip, as well as strip rupture and/or damage to the mill in extreme cases. Numerous challenges exist, however, in adequately modeling the 3D dynamic behavior. For instance, highly coupled relationships exist between several rolling process parameters, including the rolling force/torque, strip entry/exit tensions, rolling speed, roll gap profile, friction, neutral point, etc. In addition, both "hard" and "soft" nonlinearities are present, including continuous changes in the roll/strip contact conditions, elastic-plastic deformation of the strip, and nonlinear elastic flattening the rolls. These factors make it very difficult to effectively and efficiently model the rolling operation even under a quasi-static (or steady-state) assumption. Moreover, the existing models that account for structural dynamics of the rolling process exploit many simplifications, such as modeling the mill structure as linear lumped parameter system, and symmetry in the motions of rolls, among other assumptions. Even with these assumptions, the current state-of-the-art models are generally not capable of accommodating conventional strip thickness profile/flatness control mechanisms, such as roll bending, roll shifting, or non-uniform machined roll profiles, which severely restricts the flexibility/applicability to accommodate complex mill structures. A 3D general purpose dynamic model that can incorporate profile/flatness control mechanisms in addition to complex mill configurations (like 12-high or 20-high cluster mills) can provide significant new insights into rolling dynamics and chatter investigations. Accordingly, the presented research combines the static SM-FEM mathematical formulation with a Newmark- Beta time integration technique to develop a highly-efficient, stable, high-fidelity global-stiffness based transient structural dynamics model. Case studies are carried out to demonstrate the features and capabilities of the presented model in addressing the aforementioned research gaps and challenges. Based on the results, the presented structural dynamics model is able to efficiently capture time histories due to discrete disturbances on both vertical and cluster-type mill configurations. For chatter investigation, however, an appropriate roll-bite model to capture the relationships among the coupled rolling process parameters that influence the roll-bite contact mechanics is required to be coupled to accommodate the real time interactions between the structural dynamics and roll-bite mechanics. In addition to the aforementioned assumptions and simplifications in mill structural dynamic modeling, presence of both hard, and soft non- linearities as well as material non-linearities in the roll bite contact mechanics has led to exclusive use of linearized relationship in the current state-of-the-art chatter models, while 3D chatter models are non-existent in the literature. Accordingly, following the development of general-purpose 3D dynamic model, the dynamic simplified mixed-finite element method (D- SM-FEM) is coupled with a roll-bite process model. A critical part in replicating the dynamic interaction between the rolling process and the mill structural dynamics in this work relates to real-time variations in the "working point" or "operating point" relationship between specific rolling force and the plastic strain of the rolled strip which changes according to perturbations in the roll gap, position of entry/exit plane, entry/exit velocity, and tensions. These variations in the working point are incorporated in the presented chatter model via the concept of a "dynamic strip modulus" based on the secant (or tangent) relationship between the specific rolling force and plastic strain at the working point, but where the strip modulus is updated at every time-step. Case studies are presented using 4-high mill with aim to demonstrate the ability of the presented 3D chatter model to address the lack of available chatter models in literature employing 3D bulk body deformation effects, and to address some of the limitations identified above. The capabilities of the model to predict the stability, or dynamic instability is also illustrated with accompanying 3D plots showing the true mode shapes. Case studies are also undertaken to demonstrate the effect of asymmetric (with varying lower housing stiffness) mill stand assumptions. The results reveal interesting phase relationships not elucidated in previous research, as well as detailed effects from the 3D modeling on the strip profile and shape/flatness.

Download or read book PRICM7 written by Jian Feng Nie and published by Trans Tech Publications Ltd. This book was released on 2010-06-30 with total page 3000 pages. Available in PDF, EPUB and Kindle. Book excerpt: Selected, peer reviewed papers from the Seventh Pacific Rim International Conference on Advanced Materials and Processing, August 2-6, 2010, Cairns, Australia

Download or read book Rolling of Advanced High Strength Steels written by Jingwei Zhao and published by CRC Press. This book was released on 2017-07-12 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced high strength steels (AHSSs) for auto-making are primarily produced by rolling, plus heat treatment technologies if necessary. However, due to the metallurgical complexity of AHSSs, it is impossible to roll all of the AHSS grades in a rolling mill with the same rolling technology. Each of AHSSs has unique applications in vehicles, and specified rolling technologies are required to produce high quality AHSS products where they might be the best employed to meet performance demands of the automotive parts. Such background has prompted the publication of this scholarly book in the area of rolling of AHSSs with a purpose of providing readers with a valuable technical document that can be used in the research and development of AHSSs for automotive and other manufacturing industries. With contributors from USA, Germany, Poland, Italy, Spain, Austria, Australia, China, India and Iran, the book highlights the latest advances in rolling technologies of AHSSs. It focuses on the theory, simulation and practice of the rolling of AHSSs: The book introduces the history, types and advances of AHSSs and their processes; proposes new theory that is applicable to the rolling of AHSSs, presents mathematical and numerical modelling of AHSSs in rolling; covers thermomechanical processing technologies of AHSSs; provides case studies on the rolling practice of the most popular AHSSs and includes other rolling-related technologies of AHSSs. The book will be useful for both theoretical and applied research aimed at AHSSs rolling technologies, and will be a scientific and valuable literature for the metallurgists, engineers, materials scientists, academics and graduate students who are studying and working with AHSSs and their rolling technologies worldwide.