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Effect Of Forming Process On The Deformational Behaviour Of Steel Pipes
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Book Synopsis Effect of Forming Process on the Deformational Behaviour of Steel Pipes by : Majid Tanbakuei Kashani
Download or read book Effect of Forming Process on the Deformational Behaviour of Steel Pipes written by Majid Tanbakuei Kashani and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Buried pipeline networks play a vital role in the transportation of oil and natural gas from centers of production to centers of consumption. A common manufacturing technique for such pipes is the UOE process, where a flat steel plate is first formed into a U shape, then into an O shape, welded at the seam, and mechanically expanded before being shipped on site. The UOE forming process deforms the pipe material plastically and induces residual strains in the pipe. Such pipes are commonly buried on side and then are pressurized under the high head of the fluids they convey which induce hoop stresses as high as 80% of the pipe yield strength. When buried pipelines cross the regions of discontinuous permafrost, they undergo differential frost heaving, inducing significant bending deformations, which potentially induce local buckling in the pipe wall. To control local buckling, design standards impose threshold limits on buckling strains. Such threshold values are primarily based on costly full-scale experimental results. Past nonlinear finite element analysis attempts aiming at determining the threshold buckling strains have neglected the presence of residual stresses induced by the UOE forming and were thus found to grossly overestimate the buckling strains compared to those based experiments. Within the above context, the present study focuses on developing a numerical technique to predict the residual stresses induced during UOE forming, and incorporating the induced residual stresses in 3D nonlinear FEA modeling to more reliably predict buckling strain limits. Comparisons with conventional analysis techniques that omit residual stresses reveal the importance of incorporating residual stresses induced in forming when quantifying buckling strains.
Book Synopsis Unit Manufacturing Processes by : National Research Council
Download or read book Unit Manufacturing Processes written by National Research Council and published by National Academies Press. This book was released on 1995-01-03 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: Manufacturing, reduced to its simplest form, involves the sequencing of product forms through a number of different processes. Each individual step, known as an unit manufacturing process, can be viewed as the fundamental building block of a nation's manufacturing capability. A committee of the National Research Council has prepared a report to help define national priorities for research in unit processes. It contains an organizing framework for unit process families, criteria for determining the criticality of a process or manufacturing technology, examples of research opportunities, and a prioritized list of enabling technologies that can lead to the manufacture of products of superior quality at competitive costs. The study was performed under the sponsorship of the National Science Foundation and the Defense Department's Manufacturing Technology Program.
Book Synopsis HSLA Steels 2015, Microalloying 2015 & Offshore Engineering Steels 2015 by : The Chinese Society for Metals
Download or read book HSLA Steels 2015, Microalloying 2015 & Offshore Engineering Steels 2015 written by The Chinese Society for Metals and published by Springer. This book was released on 2017-03-22 with total page 1147 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a collection of papers presented at the joint conference of the 7th International Conference on High Strength Low Alloy Steels (HSLA Steels 2015), the International Conference on Microalloying 2015 (Microalloying 2015), and the International Conference on Offshore Engineering Steels 2015 (OES 2015). The papers focus on the exchange of the latest scientific and technological progresses on HSLA steels, microalloying steels, and offshore engineering steels over the past decades. The contributions are intended to strengthen cooperation between universities and research institutes, and iron and steel companies and users, and promote the further development in the fields all over the world.
Book Synopsis Initial Imperfections of High Strength UOE Manufactured Steel Pipes and Their Effects on Pipe Buckling by : Muntaseer Sarwar-E-Kainat
Download or read book Initial Imperfections of High Strength UOE Manufactured Steel Pipes and Their Effects on Pipe Buckling written by Muntaseer Sarwar-E-Kainat and published by . This book was released on 2014 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of high strength steel pipes in the pipeline industry is increasing due to its cost reduction benefits. The development of high steel grades has enabled the manufacturing of line pipes with large diameter to thickness ratios. The high strength large diameter pipes are commonly manufactured by the UOE forming process, during which, thin steel plates are deformed using mechanical presses and expansion. The plastic deformation of pipe material induced during the UOE forming process is likely to result in initial geometric imperfections in the manufactured pipes. This research introduces a new imperfection measurement technique that employs a high resolution surface profiler for geometric data acquisition, and a reverse engineering software for the geometric analysis of line pipes. The measurements reveal that the geometric imperfections in UOE pipes follow certain patterns in terms of outside radii and pipe wall thickness deviations with respect to the location of the longitudinal seam weld. The outside radii are less than the nominal value at locations opposite to the longitudinal seam weld in a pipe cross section. The pipe wall thickness values are lower at locations near the longitudinal seam weld compared to the thickness at locations opposite to the longitudinal seam weld. These patterns can be expressed in a cylindrical coordinate system with respect to the longitudinal seam weld's location. The sources of the observed patterns can be traced back to the UOE manufacturing process itself. A finite element analysis further confirms that the thickness deviation imperfection observed in the scanned pipes has significant effects on the buckling capacity of line pipes. Critical buckling capacity was reduced up to 27% in unpressurized pipes modelled with the observed thickness deviation compared to the ideal case. This reduction occurred for the case when compressive strain develops in the regions near the location of the longitudinal seam weld. Similarly, for pressurized pipes, the thickness deviation imperfection observed in the scanned pipes reduced the peak moment compared to the ideal pipe by up to 20%. The dimensional tolerances for wall thickness specified in the ASTM codes may not be reliable in this regard. These tolerances need to be revisited for the cases where the critical strain capacity governs the design of pipeline. A higher quality control for UOE manufacturing process is required. The observed imperfection patterns will aid towards improving the quality control of UOE manufactured pipes.
Book Synopsis Modelling and Simulation of Sheet Metal Forming Processes by : Marta C. Oliveira
Download or read book Modelling and Simulation of Sheet Metal Forming Processes written by Marta C. Oliveira and published by MDPI. This book was released on 2020-04-22 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: The numerical simulation of sheet metal forming processes has become an indispensable tool for the design of components and their forming processes. This role was attained due to the huge impact in reducing time to market and the cost of developing new components in industries ranging from automotive to packing, as well as enabling an improved understanding of the deformation mechanisms and their interaction with process parameters. Despite being a consolidated tool, its potential for application continues to be discovered with the continuous need to simulate more complex processes, including the integration of the various processes involved in the production of a sheet metal component and the analysis of in-service behavior. The quest for more robust and sustainable processes has also changed its deterministic character into stochastic to be able to consider the scatter in mechanical properties induced by previous manufacturing processes. Faced with these challenges, this Special Issue presents scientific advances in the development of numerical tools that improve the prediction results for conventional forming process, enable the development of new forming processes, or contribute to the integration of several manufacturing processes, highlighting the growing multidisciplinary characteristic of this field.
Book Synopsis Comprehensive Materials Processing by :
Download or read book Comprehensive Materials Processing written by and published by Newnes. This book was released on 2014-04-07 with total page 5485 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Book Synopsis Effect of Deformation and Strain Ageing on the Properties of a Line Pipe Steel by : F. H. Vitovec
Download or read book Effect of Deformation and Strain Ageing on the Properties of a Line Pipe Steel written by F. H. Vitovec and published by . This book was released on 1975 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This investigation has been conducted to determine the effects of an increase of the angle of deflection from 1.5 degrees to 4.5 degrees per pipe diameter along the pipe axis during the cold bending of a 48-inch diameter line pipe on the strength and toughness of an X70 type steel."--Leaf ii.
Download or read book Metals Abstracts written by and published by . This book was released on 1993 with total page 1216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1992 with total page 1572 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ships and Offshore Structures XIX by : Carlos Guedes Soares
Download or read book Ships and Offshore Structures XIX written by Carlos Guedes Soares and published by CRC Press. This book was released on 2015-09-03 with total page 976 pages. Available in PDF, EPUB and Kindle. Book excerpt: This three-volume work presents the proceedings from the 19th International Ship and Offshore Structures Congress held in Cascais, Portugal on 7th to 10th September 2015. The International Ship and Offshore Structures Congress (ISSC) is a forum for the exchange of information by experts undertaking and applying marine structural research.The aim of
Book Synopsis The Journal of the Iron and Steel Institute by : Iron and Steel Institute
Download or read book The Journal of the Iron and Steel Institute written by Iron and Steel Institute and published by . This book was released on 1966 with total page 1056 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes the institute's Proceedings.
Book Synopsis Effect of Deformation and Aging on the Properties of Line Pipe Steel by : F. H. Vitovec
Download or read book Effect of Deformation and Aging on the Properties of Line Pipe Steel written by F. H. Vitovec and published by . This book was released on 1977 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ISIJ International written by and published by . This book was released on 1997 with total page 708 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Structures and Granular Solids by : Jian-Fei Chen
Download or read book Structures and Granular Solids written by Jian-Fei Chen and published by CRC Press. This book was released on 2008-06-23 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume features 29 invited papers presented at the Royal Society of Edinburgh on 1-2 July 2008 by colleagues, collaborators, students and friends of Professor J. Michael Rotter (FREng, FRSE, FICE, FASCE, FIStructE, FIEAust) in honour of his 60th birthday.The articles published in this volume will be of great value to readers as it contains con
Download or read book Metals Abstracts Index written by and published by . This book was released on 1996 with total page 1622 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mechanics of Offshore Pipelines by : Stelios Kyriakides
Download or read book Mechanics of Offshore Pipelines written by Stelios Kyriakides and published by Elsevier. This book was released on 2007-07-26 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: Offshore oil and gas production was conducted throughout the entire 20th century, but the industry’s modern importance and vibrancy did not start until the early 1970s, when the North Sea became a major producer. Since then, the expansion of the offshore oil industry has been continuous and rapid. Pipelines, and more generally long tubular structures, are major oil and gas industry tools used in exploration, drilling, production, and transmission. Installing and operating tubular structures in deep waters places unique demands on them. Technical challenges within the field have spawned significant research and development efforts in a broad range of areas. Volume I addresses problems of buckling and collapse of long inelastic cylinders under various loads encountered in the offshore arena. Several of the solutions are also directly applicable to land pipelines. The approach of Mechanics of Offshore Pipelines is problem oriented. The background of each problem and scenario are first outlined and each discussion finishes with design recommendations. * New and classical problems addressed - investigated through a combination of experiments and analysis * Each chapter deals with a specific mechanical problem that is analyzed independently * The fundamental nature of the problems makes them also applicable to other fields, including tubular components in nuclear reactors and power plants, aerospace structures, automotive and civil engineering structures, naval vehicles and structures
Book Synopsis Tubular Structures XIII by : Ben Young
Download or read book Tubular Structures XIII written by Ben Young and published by CRC Press. This book was released on 2010-11-12 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tubular Structures XIII contains the latest scientific and engineering developments in the field of tubular steel structures, as presented at the 13th International Symposium on Tubular Structures (ISTS13), Hong Kong, 15 - 17 December 2010. The International Symposium on Tubular Structures (ISTS) has a longstanding reputation for being the pri
