Download or read book An Asymptotic Analysis of Three dimensional Extrusion written by American Society of Mechanical Engineers. Winter Annual Meeting and published by . This book was released on 1989 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new method of analysis of three-dimensional metal extrusion using asymptotic perturbation methods is presented in this paper. The plasticity model used depends on the first and second invariants of the stress tensor and covers a wide range of constitutive models commonly used for the analysis of metal-forming operations. It is shown that the three-dimensional extrusion problem can be approximated, to leading order, by a problem of generalized plane-strain. The results of the asymptotic analysis together with the finite element method are used to obtain approximate solutions for extrusions of elliptic or square cross-sections from round billets.
Download or read book Paper written by and published by . This book was released on 1989 with total page 614 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 Finite Inelastic Deformations Theory and Applications written by Dieter Besdo and published by Springer Science & Business Media. This book was released on 2013-03-08 with total page 559 pages. Available in PDF, EPUB and Kindle. Book excerpt: The IUTAM-Symposium on "Finite Inelastic Deformations - Theory and Applications" took place from August 19 to 23, 1991, at the University of Hannover, Germany, with 75 participants from 14 countries. Scope of the symposium was a fundamental treatment of new developments in plasticity and visco-plasticity at finite strains. This covered the phenomenological material theory based on continuum mechanics as well as the treatment of microstructural phenomena detected by precise experimental datas. In a restricted number, lectures on new experi mental facilities for measuring finite strains were also implemented into the symposium. Another important topic of the symposium was the treatment of reliable and effective computational methods for solving engineering problems with finite inelastic strains. Wi thin this context it was an essential feature that theory, numerical and computational analysis were be seen in an integrated way. In total 9 sessions with 37 lectures, many of them given by well known keynote-lecturers, and a poster session with 10 contributions met fully our expectations of a high ranking up-to-date forum for the interaction of four topics, namely the physical and mathematical modelling of finite strain inelastic deformations including localizations and damage as well as the achievements in the numerical analysis and implementation and the solution of complicated engineering systems. Special and important features were reliable material datas from macroscopic and microscopic tests as well as test results of complex engineering problems, like deep drawing and extrusion.
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1972 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Winter Annual Meeting written by American Society of Mechanical Engineers and published by . This book was released on with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report written by and published by . This book was released on 1992 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report Danish Center for Applied Mathematics and Mechanics written by Danish Center for Applied Mathematics and Mechanics and published by . This book was released on 1992 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mechanics Of Thin Film Coatings The Proceedings Of The First European Coating Symposium written by Philip H Gaskell and published by World Scientific. This book was released on 1996-05-04 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains three keynote presentations, given by experts in the field of experimental methods, rheology and the modeling of coating dies. Included also are 40 contributions drawn from the following areas of coating research and application: instability and coating defects; surface treatment; spreading and leveling; experimental investigations; surface tension and gravity driven flows; roll and gravure coating; rheological effects in coating processes.As such, these proceedings should prove a valuable resource for both researchers and coating practitioners.
Download or read book Advances in Finite Deformation Problems in Materials Processing and Structures written by American Society of Mechanical Engineers. Winter Annual Meeting and published by American Society of Mechanical Engineers. This book was released on 1991 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1990 with total page 740 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 Fused Deposition Modeling Based 3D Printing written by Harshit K. Dave and published by Springer Nature. This book was released on 2021-04-21 with total page 517 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers 3D printing activities by fused deposition modeling process. The two introductory chapters discuss the principle, types of machines and raw materials, process parameters, defects, design variations and simulation methods. Six chapters are devoted to experimental work related to process improvement, mechanical testing and characterization of the process, followed by three chapters on post-processing of 3D printed components and two chapters addressing sustainability concerns. Seven chapters discuss various applications including composites, external medical devices, drug delivery system, orthotic inserts, watertight components and 4D printing using FDM process. Finally, six chapters are dedicated to the study on modeling and optimization of FDM process using computational models, evolutionary algorithms, machine learning, metaheuristic approaches and optimization of layout and tool path.
Download or read book Asymptotic Analysis for Nonlinear Stability Problems in Structural Mechanics written by William Mark Scherzinger and published by . This book was released on 1996 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Engineering Index Annual written by and published by . This book was released on 1992 with total page 2264 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since its creation in 1884, Engineering Index has covered virtually every major engineering innovation from around the world. It serves as the historical record of virtually every major engineering innovation of the 20th century. Recent content is a vital resource for current awareness, new production information, technological forecasting and competitive intelligence. The world?s most comprehensive interdisciplinary engineering database, Engineering Index contains over 10.7 million records. Each year, over 500,000 new abstracts are added from over 5,000 scholarly journals, trade magazines, and conference proceedings. Coverage spans over 175 engineering disciplines from over 80 countries. Updated weekly.
Download or read book Government wide Index to Federal Research Development Reports written by and published by . This book was released on 1966-12 with total page 1288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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:
