Download or read book Three dimensional Simulation of Closed die Forging Process Using MSC DYNA Finite Element Software written by Mary Wicklin Schleider and published by . This book was released on 1994 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Process Design of Three dimensional Open die Forging and the Deformation Analysis of Metal Matrix Composites written by Chinghua Hung and published by . This book was released on 1990 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Three dimensional Finite Element Analyses of Open die Forging and Plate Rolling written by Yuh-cheng Shiau and published by . This book was released on 1987 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Development of CAD CAM System for Cold Working Closed Die Forging Process written by Mohamed A. Abdulmawlla and published by . This book was released on 2000 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: The application of computer-aided engineering (CAE), design (CAD), and manufacturing (CAM), is essential in modern metal forming technology. Thus, process of modelling for the investigation and understanding of deformation mechanics has become a major concern in recent and advanced research, and the finite .element method (FEM.) has assumed increased importance, particularly in the modelling of deformation processes. This work is devoted to the development of CAD/CAM system for closed die forging process. The system development consists of three stages: namely, metal flow simulation, die failure analysis and design optimisation, and development and implementation of machining code. In the first stage, the finite element method was used to simulate the axisymmetric closed die forging process of copper material. The method was used to study the metal flow, die filling retaining the non-linearity involved in the large change in the geometry, the continuous change in the contact surface condition and the isotropic material work-hardening characteristics. In the second stage, a finite element analysis and optirnisation algorithm was developed to examine the die fatigue -life and to optimise the die design. The finite element analysis in the first and second stage was carried out using commercially available finite element software called LUSAS. In the third stage, a machining code for the optimised die was developed and implemented using CAD/CAM software called UniGraphics and CNC machine. A qualitative comparison between the computational results and experiments ware made. It had been found that the early stage of the metal flow in closed die forging was very similar to a simple upsetting, then the material flows into the die cavity and towards the flash land leading to a very sharp increase in forging load. The die was designed to sustain the forging load and withstand 1000 load cycles.

Download or read book Computer aided Preform Design in Metal Forming by the Finite Element Method written by Naksoo Kim and published by . This book was released on 1989 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Finite Element Simulation of Three dimensional Casting Extrusion and Forming Processes written by Mahender Palvai Reddy and published by . This book was released on 1990 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nonlinear Modeling and Simulation of Radial Forging Process written by Jian Chen and published by . This book was released on 2011 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Radial forging is an important manufacturing process to produce large cannon barrels. It is used to improve the material properties and reduce the porosity of the billet. The objective of this study is to develop finite element models to investigate the behavior of the workpiece and predict the elimination of void defects in the radial forging process. A nonlinear coupled finite element model has been developed to study the behavior of a large-diameter tube subjected to mechanical and thermal loadings in hot radial forging. The model is formulated in a three-dimensional frame, accounting for both axial and circumferential effects. A rate-dependent material model is used to describe the viscoplastic behavior of a workpiece subject to high temperature and large strain. The simulation results are compared with previously published experimental and two dimensional axi-symmetric simulation results. This work also develops a comprehensive three-dimensional model to predict the degree to which void defects are eliminated in the cold rolling process. It compares experimental results to the finite element predictions to validate the model. The void reduction predictions of the finite element analysis agree closely with the experimental findings. Neural network has been used to establish the relationship between the process parameters and the void reduction. Finally the previous model has been extended to examine the mechanism of void deformation subjected to large deformation in hot radial forging. It investigates systematically the effects of void location, mandrel, die shape, and reduction in tube thickness on the final void reduction. The model is verified by comparison with experimental findings. All the simulation results provide a valuable procedure for the design of the hot radial forging process"--Abstract, leaf iv.

Download or read book The Prediction of Metal Flow and Properties in Three dimensional Forgings Using the Finite Element Period written by Ian Pillinger and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A knowledge of the flow occuring in metal-forming processes is of great industrial importance, and the finite-element technique is the only form of deformation analysis which can predict the flow of the material. The examination of forging operations requires a full elasticplastic treatment to be used. This thesis is concerned with an elastic-plastic, finite-element program which has been developed to investigate three-dimensional examples of this process. The fundamental theory of the finite-element method is first introduced, and then the finite-element program is described in detail. The deformation, and distributions of hardness and die-interface pressure, predicted by this technique for the unlubricated upsetting of a rectangular block are compared with experimental results, and found to be in broad agreement, the differences being attributed to the incorrect imposition of very high friction by the friction-layer technique used in the analysis. With a corrected form of the friction technique, the finiteelement program predicts results for the axisymmetric friction-ring test and a new three-dimensional friction test which are in good agreement with experimental findings up to deformations of approximately 30%; the friction-layer technique used successfully in previous axisymmetric treatments appears to be unsuitable for threedimensional formulations when large deformations are considered. The finite-element program developed here is shown to be capable of modelling an example of a more complicated three-dimensional forging, that of an automobile connnecting rod. The experimental measurements of cteformation and hardness for an aluminium con rod forged using graphite lubrication are found to be in good agreement with the finite-element predictions obtained assuming sticking friction conditions but not with the results of a zero-friction idealisation. Finally, suggestions are made for the future development of this technique.

Download or read book Three Dimensional Simulations of the Hollow Extrusion and Drawing Using the Finite Element Method written by Zhengjie Jia and published by . This book was released on 1994 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Application of the Finite Element Method to Metal Forming Problems written by Shiro Kobayashi and published by . This book was released on 1986 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Applicability of the finite element method in metal-forming process modeling has been expanded and the use of its capability for solving industrial problems has been demonstrated in the area of; (1) spread analysis in three-dimensional forming processes, (2) perform design and (3) calculation of residual stresses involved in metal forming. In the analysis of spread, sideway spread in block compression between two parallel flat plates was analyzed, using simplified three dimensional eight-node elements. The investigation has been extended to the development of general three-dimensional finite element technique and, the analysis of open-die forging was conducted for producing two size bars. A novel approach to preform design by tracing a loading path backward from a given final configuration was applied to precision preform design in plane-strain rolling. The technique was extended to include the temperature calculation in the scheme and applied to precision preform design in nosing at elevated temperatures. For the investigation of residual stresses, a comprehensive review on the subject has been made, and the finite element program was developed for the determination of residual stresses for radial forging. Keywords: Plastic deformation, Radial forging, Open-die forging, Preform design, Shell nosing.

Download or read book Introduction to Finite Element Analysis Using MATLAB and Abaqus written by Amar Khennane and published by CRC Press. This book was released on 2013-06-10 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt: There are some books that target the theory of the finite element, while others focus on the programming side of things. Introduction to Finite Element Analysis Using MATLAB® and Abaqus accomplishes both. This book teaches the first principles of the finite element method. It presents the theory of the finite element method while maintaining a balance between its mathematical formulation, programming implementation, and application using commercial software. The computer implementation is carried out using MATLAB, while the practical applications are carried out in both MATLAB and Abaqus. MATLAB is a high-level language specially designed for dealing with matrices, making it particularly suited for programming the finite element method, while Abaqus is a suite of commercial finite element software. Includes more than 100 tables, photographs, and figures Provides MATLAB codes to generate contour plots for sample results Introduction to Finite Element Analysis Using MATLAB and Abaqus introduces and explains theory in each chapter, and provides corresponding examples. It offers introductory notes and provides matrix structural analysis for trusses, beams, and frames. The book examines the theories of stress and strain and the relationships between them. The author then covers weighted residual methods and finite element approximation and numerical integration. He presents the finite element formulation for plane stress/strain problems, introduces axisymmetric problems, and highlights the theory of plates. The text supplies step-by-step procedures for solving problems with Abaqus interactive and keyword editions. The described procedures are implemented as MATLAB codes and Abaqus files can be found on the CRC Press website.

Download or read book Integrated Computational Materials Engineering written by National Research Council and published by National Academies Press. This book was released on 2008-10-24 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Integrated computational materials engineering (ICME) is an emerging discipline that can accelerate materials development and unify design and manufacturing. Developing ICME is a grand challenge that could provide significant economic benefit. To help develop a strategy for development of this new technology area, DOE and DoD asked the NRC to explore its benefits and promises, including the benefits of a comprehensive ICME capability; to establish a strategy for development and maintenance of an ICME infrastructure, and to make recommendations about how best to meet these opportunities. This book provides a vision for ICME, a review of case studies and lessons learned, an analysis of technological barriers, and an evaluation of ways to overcome cultural and organizational challenges to develop the discipline.

Download or read book Advances in Material Forming written by Francisco Chinesta and published by Springer Science & Business Media. This book was released on 2007-10-27 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book groups the main advances in material forming, considering different processes, both conventional and non-conventional. It focuses on polymers, composites and metals, which are analyzed from the state of the art. Special emphasis is devoted to the contributions of the European Scientific Association for Material Forming (ESAFORM) during the last decade and in particular the ones coming from its annual international conference.

Download or read book Proceedings of the 34th International MATADOR Conference written by Srichand Hinduja and published by Springer Science & Business Media. This book was released on 2004-09-23 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presented here are 73 refereed papers given at the 34th MATADOR Conference held at UMIST in July 2004. The MATADOR series of conferences covers the topics of Manufacturing Automation and Systems Technology, Applications, Design, Organisation and Management, and Research. The 34th proceedings contains original papers contributed by researchers from many countries on different continents. The papers cover both the technological aspect of manufacturing processes; and the systems, business and management features of manufacturing enterprise. The papers in this volume reflect: - the importance of manufacturing to international wealth creation; - the necessity of responsiveness and agility of manufacturing companies to meet market-led requirements and international chan≥ - the role of information technology and electronic communications in the growth of global manufacturing enterprises; - the impact of new technologies, new materials and processes, on the ability to produce goods of higher quality, more quickly, to meet markets needs at a lower cost. Some of the major generic developments which have taken place in these areas since the 33rd MATADOR conference was held in 2000 are reported in this volume.

Download or read book Practical Finite Element Analysis written by Nitin S. Gokhale and published by FINITE TO INFINITE. This book was released on 2008 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: Highlights of the book: Discussion about all the fields of Computer Aided Engineering, Finite Element Analysis Sharing of worldwide experience by more than 10 working professionals Emphasis on Practical usuage and minimum mathematics Simple language, more than 1000 colour images International quality printing on specially imported paper Why this book has been written ... FEA is gaining popularity day by day & is a sought after dream career for mechanical engineers. Enthusiastic engineers and managers who want to refresh or update the knowledge on FEA are encountered with volume of published books. Often professionals realize that they are not in touch with theoretical concepts as being pre-requisite and find it too mathematical and Hi-Fi. Many a times these books just end up being decoration in their book shelves ... All the authors of this book are from IIT€™s & IISc and after joining the industry realized gap between university education and the practical FEA. Over the years they learned it via interaction with experts from international community, sharing experience with each other and hard route of trial & error method. The basic aim of this book is to share the knowledge & practices used in the industry with experienced and in particular beginners so as to reduce the learning curve & avoid reinvention of the cycle. Emphasis is on simple language, practical usage, minimum mathematics & no pre-requisites. All basic concepts of engineering are included as & where it is required. It is hoped that this book would be helpful to beginners, experienced users, managers, group leaders and as additional reading material for university courses.

Download or read book Micro Macro Interactions written by Albrecht Bertram and published by Springer Science & Business Media. This book was released on 2008-10-23 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many materials or media in nature and technology possess a microstructure which determines their macroscopic behaviour. The knowledge of the relevant mechanisms is often more comprehensive on the micro than on the macro scale. On the other hand, not all information on the micro level is relevant for the understanding of this macro behaviour. Therefore, averaging and homogenization methods are needed to select only the specific information from the micro scale, which influences the macro scale. These methods also open the possibility to design or to influence microstructures with the objective to optimize their macro behaviour. This book presents the development of new methods in this interdisciplinary field of macro- micro-interactions of different engineering branches like mechanical and process engineering, applied mathematics, theoretical, and computational physics. In particular, solids with microstructures and particle systems are considered.

Download or read book Advances in Lightweight Materials and Structures written by A. Praveen Kumar and published by Springer Nature. This book was released on 2020-10-13 with total page 827 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents select proceedings of the International Conference on Advanced Lightweight Materials and Structures (ICALMS) 2020, and discusses the triad of processing, structure, and various properties of lightweight materials. It provides a well-balanced insight into materials science and mechanics of both synthetic and natural composites. The book includes topics such as nano composites for lightweight structures, impact and failure of structures, biomechanics and biomedical engineering, nanotechnology and micro-engineering, tool design and manufacture for producing lightweight components, joining techniques for lightweight structures for similar and dissimilar materials, design for manufacturing, reliability and safety, robotics, automation and control, fatigue and fracture mechanics, and friction stir welding in lightweight sandwich structures. The book also discusses latest research in composite materials and their applications in the field of aerospace, construction, wind energy, automotive, electronics and so on. Given the range of topics covered, this book can be a useful resource for beginners, researchers and professionals interested in the wide ranging applications of lightweight structures.