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Analysis And Optimization Of Autofrettaged And Shrink Fitted Compound Cylinders Under Thermo Mechanical Loads
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Book Synopsis Analysis and Optimization of Autofrettaged and Shrink-Fitted Compound Cylinders Under Thermo-Mechanical Loads by : Ossama M. Ramy Y. Abdelsalam
Download or read book Analysis and Optimization of Autofrettaged and Shrink-Fitted Compound Cylinders Under Thermo-Mechanical Loads written by Ossama M. Ramy Y. Abdelsalam and published by . This book was released on 2012 with total page 181 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cylindrical shells have large industrial applications ranging from pressure vessels, engine cylinders and hydraulic chambers to chemical and power plants and they are typically subjected to severe mechanical or thermo-mechanical environmental conditions. The fatigue life, pressure and thermal load bearing capacities of thick-walled cylinders can be considerably improved by inducing near the bore compressive residual hoop stresses. Shrink-fit and autofrettage processes have been effectively applied to generate favorable compressive residual stresses. The main goal of this research study is to fundamentally investigate the compound cylinders subjected to autofrettage and shrink-fit processes and develop new design processing technique and practical design optimization strategies to enhance their fatigue life under cyclic thermo-mechanical loads. First, the residual stresses of compound cylinders subjected to different combinations of shrink-fit and autofrettage processes have been evaluated using the developed finite element model in the ANSYS environment. The stresses due to different cyclic thermo-mechanical loads have also been calculated for the different combinations of compound cylinders considering the fully coupled thermo-elastic finite element model. To validate the finite element model, an experimental setup has been designed to measure the temperature history at three different locations through the wall thickness and also hoop strain at the outer surface of a two-layer compound cylinder under internal quasi-static and cyclic thermal loads. The experimental results have then been compared with those obtained from the finite element model. Moreover, to compare the performance of compound cylinders under different thermo-mechanical loads, the fatigue life due to cyclic pressure, cyclic thermal pulses and cyclic combined thermo-mechanical pulses has been calculated using ASME code for high pressure vessel. Next, to enhance the residual stress distribution along the wall thickness of the cylinder, a new double autofrettage process has been introduced. In the proposed double autofrettage process, an outer autofrettage cycle is performed prior to a standard inner autofrettage cycle. This can provide an increase in the beneficial compressive residual stresses at the near bore area of the cylinder while decreasing the detrimental tensile residual stress at the outer part of the cylinder. The proposed process has then been utilized to construct new combinations of autofrettage, shrink-fit and double autofrettage processes. The residual stress distribution through the thickness and fatigue life of these new combinations have been evaluated and compared with those based on conventional combinations of shrink-fit and autofrettage processes. Finally, a practical design optimization methodology has been developed to identify the optimal configuration of autofrettaged and shrink-fitted cylinders. Optimization problems based on the high-fidelity finite element model is computationally very expensive and may not render accurate optimum results. Considering this in the presented research, design of experiment (DOE) and response surface method (RSM) have been used in combination with the finite element model to create smooth response surface functions which can accurately describe the behavior of the residual hoop stresses with respect to the change of design variables. The developed response surface functions have been effectively utilized in the design optimization problems to simultaneously maximize the residual compressive hoop stress and minimize the residual tensile hoop stress through the thickness of the compound cylinder. Nonlinear mathematical programming technique based on the powerful sequential quadratic programming (SQP) algorithm has been used in combination with the genetic algorithm (GA) in order to accurately capture the global optimal solutions. At the end, the residual hoop stress distribution and fatigue life of the optimum configurations for each combination of autofrettage and shrink-fit processes have been evaluated and compared.
Book Synopsis ANALYSIS AND OPTIMIZATION OF AUTOFRETTAGED AND SHRINK-FITTED COMPOUND CYLINDERS UNDER THERMO-MECHANICAL LOADS. by : Ossama Ramy Abdelsalam
Download or read book ANALYSIS AND OPTIMIZATION OF AUTOFRETTAGED AND SHRINK-FITTED COMPOUND CYLINDERS UNDER THERMO-MECHANICAL LOADS. written by Ossama Ramy Abdelsalam and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Stress and Reliability Analyses of Multilayered Composite Cylinder Under Thermal and Mechanical Loads by : Xiaohua Wang
Download or read book Stress and Reliability Analyses of Multilayered Composite Cylinder Under Thermal and Mechanical Loads written by Xiaohua Wang and published by . This book was released on 1992 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Circular Cylinders and Pressure Vessels by : Vincenzo Vullo
Download or read book Circular Cylinders and Pressure Vessels written by Vincenzo Vullo and published by Springer Science & Business Media. This book was released on 2013-11-29 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides comprehensive coverage of stress and strain analysis of circular cylinders and pressure vessels, one of the classic topics of machine design theory and methodology. Whereas other books offer only a partial treatment of the subject and frequently consider stress analysis solely in the elastic field, Circular Cylinders and Pressure Vessels broadens the design horizons, analyzing theoretically what happens at pressures that stress the material beyond its yield point and at thermal loads that give rise to creep. The consideration of both traditional and advanced topics ensures that the book will be of value for a broad spectrum of readers, including students in postgraduate, and doctoral programs and established researchers and design engineers. The relations provided will serve as a sound basis for the design of products that are safe, technologically sophisticated, and compliant with standards and codes and for the development of innovative applications.
Book Synopsis Strengthening and Joining by Plastic Deformation by : Uday Shanker Dixit
Download or read book Strengthening and Joining by Plastic Deformation written by Uday Shanker Dixit and published by Springer. This book was released on 2018-06-05 with total page 259 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on strengthening and joining materials by means of plastic deformation, gathering extended research papers presented at the AIMTDR 2016 conference. Plastic deformation is used in materials processing to improve the strength of the material. For example, the rod/screw used to connect the cooker handle to the main body has to be strong and sustainable; such rods can be strengthened by plastic deformation (using multi-stage forming operations etc.). Similarly, joining by means of plastic deformation is highly valuable since it avoids the material and environmental degradation often caused by fusion welding processes. The book discusses various processing techniques in which plastic deformation is used to strengthen materials – e.g. in equal channel angular extrusion, autofrettage etc., or to join materials without melting them – e.g. in friction stir processing, riveting etc. Offering an extensive guide, the book includes chapters on roll bonding, equal channel angular pressing, autofrettage, friction stir processing/welding, magnetic pulse welding, and riveting – processes used to strengthen and join a variety of materials for lightweight applications and sustainable manufacturing. The contents of this book will be useful to researchers and practitioners alike.
Book Synopsis Handbook of Diesel Engines by : Klaus Mollenhauer
Download or read book Handbook of Diesel Engines written by Klaus Mollenhauer and published by Springer Science & Business Media. This book was released on 2010-06-22 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt: This machine is destined to completely revolutionize cylinder diesel engine up through large low speed t- engine engineering and replace everything that exists. stroke diesel engines. An appendix lists the most (From Rudolf Diesel’s letter of October 2, 1892 to the important standards and regulations for diesel engines. publisher Julius Springer. ) Further development of diesel engines as economiz- Although Diesel’s stated goal has never been fully ing, clean, powerful and convenient drives for road and achievable of course, the diesel engine indeed revolu- nonroad use has proceeded quite dynamically in the tionized drive systems. This handbook documents the last twenty years in particular. In light of limited oil current state of diesel engine engineering and technol- reserves and the discussion of predicted climate ogy. The impetus to publish a Handbook of Diesel change, development work continues to concentrate Engines grew out of ruminations on Rudolf Diesel’s on reducing fuel consumption and utilizing alternative transformation of his idea for a rational heat engine fuels while keeping exhaust as clean as possible as well into reality more than 100 years ago. Once the patent as further increasing diesel engine power density and was filed in 1892 and work on his engine commenced enhancing operating performance.
Book Synopsis Residual Stresses 2016 by : Thomas M. Holden
Download or read book Residual Stresses 2016 written by Thomas M. Holden and published by Materials Research Forum LLC. This book was released on 2017-03-15 with total page 638 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the proceedings of the International Conference on Residual Stresses 10 and is devoted to the prediction/modelling, evaluation, control, and application of residual stresses in engineering materials. New developments, on stress-measurement techniques, on modelling and prediction of residual stresses and on progress made in the fundamental understanding of the relation between the state of residual stress and the material properties, are highlighted. The proceedings offer an overview of the current understanding of the role of residual stresses in materials used in wide ranging application areas.
Book Synopsis Compressor Handbook by : Paul Hanlon
Download or read book Compressor Handbook written by Paul Hanlon and published by McGraw Hill Professional. This book was released on 2001-02-02 with total page 780 pages. Available in PDF, EPUB and Kindle. Book excerpt: The benchmark guide for compressor technology pros You don't have to scour piles of technical literature for compressor answers any longer. The Compressor Handbook compiled by Paul Hanlon packs all the answers on design procedures, practical application, and maintenance of compressors—straight from top experts on these widely used machines. You get details on everything from fundamentals and theory to advanced applications, techniques, and today's materials -- including sought-after data on compressors that inflate tires, spray paint, increase the density of natural gas, or perform any of a myriad of other important industrial and day-to-day functions. This fully illustrated Handbook can help you: Understand the structure and operation of compressors of all types Design or select compressors for any use, from power-cleaning to chemical processes Follow step-by-step design procedures for fewer errors and optimized results Specify leading-edge materials, components, and lubricants Operate and maintain all types of compressors at peak efficiency Answer questions on and provide designs for ancillary and auxiliary equipment Invent new applications for compressor technology Easily find tabular data on gas properties, efficiency curves, compression ratios, and horsepower, plus definitions of nomenclature
Book Synopsis Trends in Computational Contact Mechanics by : Giorgio Zavarise
Download or read book Trends in Computational Contact Mechanics written by Giorgio Zavarise and published by Springer Science & Business Media. This book was released on 2011-06-19 with total page 357 pages. Available in PDF, EPUB and Kindle. Book excerpt: The subject of Computational Contact Mechanics has many facets. Its main impact lies in the transfer of knowledge form theoretical research to applied sciences, and from there to industry. The application fields are literally countless, ranging from classical engineering to biomechanics and nano-sciences. The remarkable increase of computer power in recent years has been instrumental in enabling the development of simulation-based analysis in current design activity. This still involves tremendous effort in research, which focuses on, for example, multi-field and multi-scale problems, algorithmic robustness, and geometrical accuracy. Moreover, several aspects of Contact Mechanics, Debonding and Fracture Mechanics, have been combined to offer new enhanced possibilities to the computer simulation of complex phenomena. With these contributions of prominent scientists, this book offers a wide overview on the ongoing research at the highest level in the field.
Book Synopsis Combined Loadings in the Theory of Plasticity by : Michal Zyczkowski
Download or read book Combined Loadings in the Theory of Plasticity written by Michal Zyczkowski and published by Springer Science & Business Media. This book was released on 1981-12-31 with total page 750 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Industrial High Pressure Applications by : Rudolf Eggers
Download or read book Industrial High Pressure Applications written by Rudolf Eggers and published by John Wiley & Sons. This book was released on 2012-07-11 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: Industrial high pressure processes open the door to many reactions that are not possible under 'normal' conditions. These are to be found in such different areas as polymerization, catalytic reactions, separations, oil and gas recovery, food processing, biocatalysis and more. The most famous high pressure process is the so-called Haber-Bosch process used for fertilizers and which was awarded a Nobel prize. Following an introduction on historical development, the current state, and future trends, this timely and comprehensive publication goes on to describe different industrial processes, including methanol and other catalytic syntheses, polymerization and renewable energy processes, before covering safety and equipment issues. With its excellent choice of industrial contributions, this handbook offers high quality information not found elsewhere, making it invaluable reading for a broad and interdisciplinary audience.
Book Synopsis Analysis and Design of Structures Made of Plastically Anisotropic Materials by : Sergei Alexandrov
Download or read book Analysis and Design of Structures Made of Plastically Anisotropic Materials written by Sergei Alexandrov and published by . This book was released on 2020-08-31 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plastic anisotropy is a common property of many metallic materials. This property affects the analysis and design of structures and metal forming processes. The present edited collection of papers concerns analytic and numerical methods of structural and metal forming analysis and design using material models for anisotropic materials. Some qualitative features of rigid plastic solutions in anisotropic plasticity are investigated. Both rate-independent and rate-dependent constitutive equations are considered. The effect of plastic anisotropy on the distribution of residual stresses and strains is shown. Some papers deal with thermo-mechanical problems.
Book Synopsis Residual Stresses in Composite Materials by : Mahmood M. Shokrieh
Download or read book Residual Stresses in Composite Materials written by Mahmood M. Shokrieh and published by Woodhead Publishing. This book was released on 2014-02-14 with total page 407 pages. Available in PDF, EPUB and Kindle. Book excerpt: Residual stresses are a common phenomenon in composite materials. They can either add to or significantly reduce material strength. Because of the increasing demand for high-strength, light-weight materials such as composites and their wide range of applications in the aerospace and automotive industries, in civil infrastructure and in sporting applications, it is critical that the residual stresses of composite materials are understood and measured correctly. The first part of this important book reviews destructive and non-destructive testing (NDT) techniques for measuring residual stresses. Various mathematical (analytical and numerical) methods for calculation of residual stresses in composite materials are also presented. Chapters in the first section of the book discuss the simulated hole drilling method, the slitting/crack compliance method, measuring residual stresses in homogeneous and composite glass materials using photoelastic techniques, and modeling residual stresses in composite materials. The second part of the book discusses residual stresses in polymer matrix, metal-matrix and a range of other types of composites. Moreover, the addition of nanoparticles to the matrix of polymeric composites as a new technique for reduction of residual stresses is discussed. Residual stresses in composite materials provides a comprehensive overview of this important topic, and is an invaluable reference text for both academics and professionals working in the mechanical engineering, civil engineering, aerospace, automotive, marine and sporting industries. Reviews destructive and non-destructive testing (NDT) techniques for measuring residual stresses Discusses residual stresses in polymer matrix, metal-matrix and other types of composite Considers the addition of nanoparticles to the matrix of polymeric composites as a new technique for reduction of residual stresses
Book Synopsis Advances in Engineering Structures, Mechanics & Construction by : M. Pandey
Download or read book Advances in Engineering Structures, Mechanics & Construction written by M. Pandey and published by Springer Science & Business Media. This book was released on 2007-02-10 with total page 847 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the proceedings of an International Conference on Advances in Engineering Structures, Mechanics & Construction, held in Waterloo, Ontario, Canada, May 14-17, 2006. The contents include contains the texts of all three plenary presentations and all seventy-three technical papers by more than 153 authors, presenting the latest advances in engineering structures, mechanics and construction research and practice.
Download or read book Ballistics written by Donald E. Carlucci and published by CRC Press. This book was released on 2007-12-14 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: Even the earliest weapon developers faced the need to understand how and why guns and ammunition work in order to improve their effectiveness. As weapons became more sophisticated, the field of ballistics naturally divided into three main areas of specialization: interior, exterior, and terminal ballistics. Providing unique coverage of all three ar
Download or read book Hydrostatic Extrusion written by N. Inoue and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is intended to be a reference text on hydrostatic extru sion, a multidisciplinary technology involving the forming process of materials, tribology, high pressure engineering and so forth. Until now only one book bearing the title of hydrostatic extrusion, by Prof. Alexander and Dr. Lengyel, has been published since 1971. Although there are chapters on hydrostatic extrusion in such books as THE MECHANICAL BEHAVIOUR OF MATERIALS UNDER PRESSURE edited by Dr. Pugh, METAL FORMING by Prof. Avitzur and HIGH PRESSURE TECHNOLOGY by Drs. Spain and Paauwe, it is regrettable that no up~to-date reference books on hydro static extrusion are available. As is well known, hydrostatic extrusion is a nearly-ideal lubricated extrusion. Its advantages have been demonstrated by laboratory research in the past two decades, yet many manufacturers, however, still hesitate to adopt the technology in their plants. Their hesitation is certainly due to the lack of exact information on the process and its equipment and also to 'their unfamiliarity with the actual method of operation. In order to provide a useful introduction to the subject for engi neers who work in industries which plan to employ this technique and also to give exact and reliable information on the durability and perfo- ance of production facilities, as well as the capabilities of the process and the properties of extruded products, we decided to publish this book. Starting with theories and computational methods, the processes of cold, warm and hot hydrostatic extrusion are described by experts in their respective fields.
Book Synopsis Final and interim reports by : William Henry Draper
Download or read book Final and interim reports written by William Henry Draper and published by . This book was released on 1945 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
