Download or read book An Improved Upper Bound Method for 3 dimensional Flow Analysis in Extrusion Dies written by Hamza A. Ghulman and published by . This book was released on 2001 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Improved Upper Bound Method for Flow Analysis in Converging Extrusion Dies written by Hamza A. Ghulman and published by . This book was released on 2000 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Improved Upper Bound Method for Flow Analysis in Streamline Converging Extrusion Dies written by Hamza A. Ghulman and published by . This book was released on 2000 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Three Dimensional Analysis of Extrusion Through Taper Die written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: An upper bound solution for extrusion of "triangular" sectioned product through taper die from round sectioned billet has been developed. A simple discontinuous kinematically admissible velocity field with optimization parameter is proposed. From the proposed velocity field the upper bound solution on non-dimensional extrusion pressure are determined with respect to chosen process parameters. The theoretical results are compared with experimental result to check the validity of the proposed velocity fields. The reformulated SERR technique is used to find out the kinematically admissible velocity field applied to deformation zone surrounded by flat surfaces. This velocity field is used to compute upper bound extrusion pressure at various area of reduction. The triangular sectioned product from round sectioned billet through taper die is taken for upper bound analysis using SERR technique. As this section is symmetry about one axis with round sectioned billet only one half of section is taken as domain interest for deformation zone to calculate the velocity field. Detailed formulations of models are presented. To validate the proposed model/analysis experiments are carried out taking lead as the working material. An experimental set-up is designed and fabricated with four split type taper dies for this purpose. Experiments are carried out at dry and lubricated condition of the dies to check the friction effect. The results obtained indicate that the predictions both in extrusion load and the deformed configuration are in good agreement with the experiment under different lubrication conditions.
Download or read book Proceedings of the 36th International MATADOR Conference written by Srichand Hinduja and published by Springer Science & Business Media. This book was released on 2010-08-05 with total page 581 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presented here are 130 refereed papers given at the 36th MATADOR Conference held at The University of Manchester in July 2010. The MATADOR series of conferences covers the topics of Manufacturing Automation and Systems Technology, Applications, Design, Organisation and Management, and Research. The proceedings of this Conference contain original papers contributed by researchers from many countries on different continents. The papers cover the principles, techniques and applications in aerospace, automotive, biomedical, energy, consumable goods and process industries. The papers in this volume reflect: • the importance of manufacturing to international wealth creation; • the emerging fields of micro- and nano-manufacture; • the increasing trend towards the fabrication of parts using lasers; • the growing demand for precision engineering and part inspection techniques; and • the changing trends in manufacturing within a global environment.
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2004 with total page 858 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Digest written by and published by . This book was released on 1998 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1974 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Generalized Upper Bound Method for the Solution of Three Dimensional Extrusion of Shapes Using CAD CAM Techniques written by K. Abrinia and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modeling Analysis and Control of Hydraulic Actuator for Forging written by Xinjiang Lu and published by Springer. This book was released on 2017-12-30 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes load modeling approaches for complex work pieces and batch forgings, and demonstrates analytical modeling and data-driven modeling approaches for known and unknown complex forging processes. It overcomes the current shortcomings of modeling, analysis and control approaches, presenting contributions in three major areas: In the first, several novel modeling approaches are proposed: a process/shape-decomposition modeling method to help estimate the deformation force; an online probabilistic learning machine for the modeling of batch forging processes; and several data-driven identification and modeling approaches for unknown forging processes under different work conditions. The second area develops model-based dynamic analysis methods to derive the conditions of stability and creep. Lastly, several novel intelligent control methods are proposed for complex forging processes. One of the most serious problems in forging forming involves the inaccurate forging conditions, velocity and position offered by the hydraulic actuator due to the complexity of both the deformation process of the metal work piece and the motion process of the hydraulic actuator. The book summarizes the current weaknesses of modeling, analysis and control approaches. are summarized as follows: a) With the current modeling approaches it is difficult to model complex forging processes with unknown parameters, as they only model the dynamics in local working areas but do not effectively model unknown nonlinear systems across multiple working areas; further, they do not take the batch forging process into account, let alone its distribution modeling. b) All previous dynamic analysis studies simplify the forging system to having a single-frequency pressure fluctuation and neglect the influences of non-linear load force. Further, they fail to take the flow equation in both valves and cylinders into account. c) Conventional control approaches only consider the linear deformation force and pay no attention to sudden changes and the motion synchronization for the multi-cylinder system, making them less effective for complex, nonlinear time-varying forging processes subject to sudden changes.
Download or read book A generalised upper bound method for the solution of three dimensional extrusion of shapes using CAD CAM techniques written by K. Abrinia and published by . This book was released on 1991 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book American Doctoral Dissertations written by and published by . This book was released on 2001 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the Twentieth International Machine Tool Design and Research Conference written by S.A. Tobias and published by Springer. This book was released on 2016-01-14 with total page 605 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Encyclopedia of Aluminum and Its Alloys Two Volume Set Print written by George E. Totten and published by CRC Press. This book was released on 2018-12-07 with total page 2957 pages. Available in PDF, EPUB and Kindle. Book excerpt: This encyclopedia, written by authoritative experts under the guidance of an international panel of key researchers from academia, national laboratories, and industry, is a comprehensive reference covering all major aspects of metallurgical science and engineering of aluminum and its alloys. Topics covered include extractive metallurgy, powder metallurgy (including processing), physical metallurgy, production engineering, corrosion engineering, thermal processing (processes such as metalworking and welding, heat treatment, rolling, casting, hot and cold forming), surface engineering and structure such as crystallography and metallography.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1981 with total page 1370 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Download or read book Manufacturing Review written by and published by . This book was released on 1988 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Deformation Processing written by John J. Burke and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Army Materials and Mechanics Research Center has con ducted the Sagamore Army Materials Research Conference in coop eration with the Materials Science Group of the Department of Chemical Engineering and Materials Science of Syracuse University since 1954. The purpose of the conference has been to gather to gether scientists and engineers from academic institutions, in dustry and government who are uniquely qualified to explore in depth a subject of importance to the Army, the Department of Defense and the scientific community. This volume, Advances in Deformation Processing, addresses the areas of Analytical Advances, Workability, Processing to Optimize Properties, Advanced Applications - Materials, and Advanced Applications - Processes. The dedicated assistance of Mr. Joseph Bernier of the Army Materials and Mechanics Research Center throughout the stages of the conference planning and finally the publication of the Sagamore Conference Proceedings is deeply appreciated. The support of Helen Brown DeMascio of Syracuse University in p- paring the final manuscript is acknowledged. The continued active interest and support of these conferences by Dr. A. E. Gorum, Director of the Army Materials and Mechanics Research Center, is appreciated. Syracuse University Syracuse, New York The Editors vii Contents SESSION I INTRODUCTION A. E. Gorum, Moderator Continuum Mechanics and Deformation Processing 1.
