Download or read book High Velocity Formability and Factors Affecting it written by Mala Seth Dehra and published by . This book was released on 2006 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: High velocity forming methods successfully address problems faced in conventional forming techniques. They can be effectively used for forming metals with low formability like aluminum alloys and high strength steel. They can be instrumental is manufacturing of lighter vehicles with higher fuel efficiency. Electromagnetic forming (EMF) is an HVF method that is gaining wide acceptance due to its advantages and scope for commercialization. A number of experimental studies were carried out with EMF with the main goal of exploring fundamentals about material formability at high velocities, which can be used to establish practical design guidelines and to make models of high velocity formability. Thus the main factors that influence high velocity formability -- inertia / size effects; changes in constitutive behavior; impact; and dynamic failure modes, were studied mainly with experiments. The role of changes in constitutive behavior in improving formability was studied from existing studies and new theoretical studies involving High velocity Forming Limit Diagram (FLD) and through solving an inverse problem of ring expansion. Tube free-expansion experiments were carried out to demonstrate enhanced metal formability even in the absence of die impact. To further establish the significance of inertia, electromagnetic ring free-expansion experiments with rings of different aspect ratios were carried out. The results clearly demonstrated the influence of sample aspect ratio (dimensions) and hence inertia on high velocity formability. Die impact experiments were carried out with tubes and rings to show the beneficial influence of die arrest of a moving sample. It was revealed that die impact in an appropriate range of velocities can significantly suppress failure and reduce the number of tears and fractures in the samples. Further a new mode of failure in die impacted samples, spall-like dynamic rupture was observed, which had characteristics similar to classic spall failure. Thus through all these studies, the important factors influencing high velocity formability was studied and it was shown that it can be more complex than quasi-static formability. Boundary conditions for each forming operation can play a more significant role and hence simple tools like FLDs might not be practical tools for studying high velocity formability.
Download or read book Advanced Materials XVI written by Muhammad Muneeb Asim and published by Trans Tech Publications Ltd. This book was released on 2021-02-04 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: Selected peer-reviewed full text research papers from the 16th International Symposium on Advanced Materials (16th ISAM) Selected, peer-reviewed papers from the 16th International Symposium on Advanced Materials (ISAM), October 21-25, 2019, Islamabad, Pakistan
Download or read book Advances in Key Engineering Materials written by Zeng Zhu and published by Trans Tech Publications Ltd. This book was released on 2011-02-21 with total page 726 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume is indexed by Thomson Reuters CPCI-S (WoS). These proceedings consist of the fully refereed papers presented at the International Conference on Key Engineering Materials (ICKEM 2011) held on March 25 - 27, 2011 in Sanya, China. The main aim was to provide an international scientific forum for the exchange of new ideas in a number of fields via in-depth discussions with peers from around the world. Both inward research; core areas of key engineering materials and outward research; multi-disciplinary, inter-disciplinary, and applications are covered in this timely work.
Download or read book Simulation of Manufacturing Sequences of Functionally Graded Structures written by Gleim, Tobias and published by kassel university press GmbH. This book was released on 2017-02-10 with total page 339 pages. Available in PDF, EPUB and Kindle. Book excerpt: The current paper establishes an axisymmetric model for an inductive heating process. Therein, the fully coupled MAXWELL equations, assuming a temperature dependent permeability, are combined with the non-linear heat conduction equation to yield a monolithic solution strategy. The latter is based on a consistent linearization together with a higher order finite element discretization using GALERKIN'S method in space. For the temporal discretization, the generalized Newmark-? methods, higher order RUNGE-KUTTA methods, and discontinuous and continuous GALERKIN methods are used. Furthermore, the residual error is introduced to open an alternative way to obtain a numerically efficient estimation of the time integration accuracy. Simulation results of the electric, magnetic and thermal fields are provided, together with parameter studies concerning spatial discretization, frequency dependence and penetration depth of the heating zone. Another topic analyzed is the residual error and its estimation quality regarding polynomial degree and time step size. A further aspect of this work is the investigation of the thermal fluid-structure interaction with respect to functionally graded materials. Different coupling strategies for the acceleration of the fixed-point iteration in each time step is in the foreground. Relaxation methods as well as extrapolation methods make it possible to significantly reduce the number of fixed point iterations. At the same time, an adaptive strategy with higher order RUNGE-KUTTA methods can provide a further advantage in combination with acceleration methods.
Download or read book Superplasticity Current Status and Future Potential Volume 601 written by Patrick B. Berbon and published by Mrs Proceedings. This book was released on 2000 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: The MRS Symposium Proceeding series is an internationally recognised reference suitable for researchers and practitioners. The book, first published in 2000, includes topics on: superplasticity in metals and intermetallics; superplasticity in ceramics; fundamental aspects of superplasticity; superplasticity in industry; high strain rate superplasticity; and developments using severe plastic deformation.
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.
Download or read book Field Theory of Multiscale Plasticity written by Tadashi Hasebe and published by Cambridge University Press. This book was released on 2023-05-31 with total page 861 pages. Available in PDF, EPUB and Kindle. Book excerpt: This unique book provides a concise and systematic treatment of foundational material on dislocations and metallurgy and an up-to-date discussion of multiscale modeling of materials, which ultimately leads to the field theory of multiscale plasticity (FTMP). Unlike conventional continuum models, this approach addresses the evolving inhomogeneities induced by deformation, typically as dislocation substructures like dislocation cells, as well as their interplay at more than one scale. This is an impressively visual text with many and varied examples and viewgraphs. In particular, the book presents a feasible constitutive model applicable to crystal plasticity-based finite element method (FEM) simulations. It will be an invaluable resource, accessible to undergraduate and graduate students as well as researchers in mechanical engineering, solid mechanics, applied physics, mathematics, materials science, and technology.
Download or read book Materials Science written by RS Khurmi | RS Sedha and published by S. Chand Publishing. This book was released on 2008 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: We take an opportunity to present 'Material Science'to the students of A.M.I.E.(I)Diploma stream in particular,and other engineering students in general.he object of this book is to present the subject matter in a most concise,compact,to the point and lucis manner.While preparing the book,we have constantly kept in mind the requirments of A.M.I.E(I) students,regarding the latest trend of their examination.To make it really useful for the A.M.I.E.(I) students,the solutions of their complete examination has been written in an easy style,with full detail and illustrations.
Download or read book Formability written by Wilko C. Emmens and published by Springer Science & Business Media. This book was released on 2011-07-23 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: - Overview of materials and treatment aspects of manufacturability of sheet metal - Written by an industrial expert turned scientist - Concentrates on the formability of sheet metal, one of the fundamental form material is used in metalworking
Download or read book The Materials Selector Second Edition written by N. Waterman and published by Taylor & Francis. This book was released on 2024-09-06 with total page 2675 pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite the increased understanding we now have of materials and their properties, selecting materials for a given application remains a daunting, non-trivial task. The volume of data, inadequacies in the data, and the tens of thousands of materials to choose from can overwhelm the would-be user. The Materials Selector addresses all the problems faced by materials scientists and engineers. In its three volumes you will find the properties, performance, and processability of metals, plastics, carbon and graphite, glasses, ceramics, polymerics, and composites. The characteristics and comparative economics of the manufacturing routes that convert these materials into engineering components.
Download or read book Die Design Handbook written by David Alkire Smith and published by Society of Manufacturing Engineers. This book was released on 1990 with total page 957 pages. Available in PDF, EPUB and Kindle. Book excerpt: Whether you're involved in a highly specialized operation, or need comprehensive information on many types of die designs, this book is your best bet book on how to design dies. Hundreds of illustrations on proven designs are included, as well as hundreds of tables and equations to help you make quick calculations for allowances, pressures, forces and more.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Metals Abstracts written by and published by . This book was released on 1995 with total page 1302 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Project Neos written by Paul Rosenthal and published by . This book was released on 1961 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Metal Forming written by William F. Hosford and published by Cambridge University Press. This book was released on 2011-02-07 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book helps the engineer understand the principles of metal forming and analyze forming problems - both the mechanics of forming processes and how the properties of metals interact with the processes. In this fourth edition, an entire chapter has been devoted to forming limit diagrams and various aspects of stamping and another on other sheet forming operations. Sheet testing is covered in a separate chapter. Coverage of sheet metal properties has been expanded. Interesting end-of-chapter notes have been added throughout, as well as references. More than 200 end-of-chapter problems are also included.
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 1969 with total page 944 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes sect. "A survey of literature on the manufacture and properties of iron and steel, and kindred subjects" (title varies)
Download or read book Battelle Technical Review written by Battelle Memorial Institute and published by . This book was released on 1964 with total page 770 pages. Available in PDF, EPUB and Kindle. Book excerpt:
