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Thursday, July 23, 2020 | History

2 edition of generic finite element modelling of complex multi-stage metal forming processes. found in the catalog.

generic finite element modelling of complex multi-stage metal forming processes.

Xiaohang Liu

generic finite element modelling of complex multi-stage metal forming processes.

by Xiaohang Liu

  • 246 Want to read
  • 37 Currently reading

Published by University of Central England in Birmingham in Birmingham .
Written in English


Edition Notes

Thesis (Ph.D.) - University of Central England in Birmingham, 2003.

ContributionsUniversity of Central England in Birmingham.
The Physical Object
Paginationxiii, 208p. :
Number of Pages208
ID Numbers
Open LibraryOL16002888M

finite element modelling may well be the omission of static loads. There are strong repercussions for schemes which use dynamic data for damage detection. The methods for including load-effects in dynamic finite element models are outlined. A “static updating” technique which takes into account nonlinear geometry effects is. — Finite Element Analysis of Solids and Fluids Fall ‘08 Lecture 2 - Finite element formulation of solids and structures Prof. K.J. Bathe MIT OpenCourseWare Reading: Ch. 1, Sec. Assume that on tS u the displacements are zero (and tS u is constant). Need to satisfy at time t: • Equilibrium of Cauchy stresses tτ ij with.

finite-element method (FEM) has assumed increased importance, particu- larly in the modeling of forming processes. There are many excellent textbooks on the principles and fundamentals of metal forming, but only a few describe the application of FEM to the analysis and simulation of metal-forming processes. A generic finite element library written in C++ with interfaces for Python, Matlab and Scilab. It focuses on modeling of contact mechanics and discontinuities (e.g. cracks). It focuses on modeling of contact mechanics and discontinuities (e.g. cracks).

more intuitive and forthright approach to the modeling than could be achieved with the FD. The research of discretizion of a complex problem into a set of less complex problems that were easily solved began. This led to the development of the Finite Element Method (FEM) in Author: Martin Eriksson. Multiscale analysis using a coupled discrete/finite element model 3 J i = T i (2) where u i is the element centroid displacement in a fixed (inertial) coordinate frame X, i - the angular velocity, m i - the element mass, J i - the moment of inertia, F i - the resultant force, and T i- the resultant moment about the central axes. The form of the rotational Eq.


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Generic finite element modelling of complex multi-stage metal forming processes by Xiaohang Liu Download PDF EPUB FB2

A Powerful Tool for the Analysis and Design of Complex Structural Elements Finite-Element Modelling of Structural Concrete: Short-Term Static and Dynamic Loading Conditions presents a finite-element model of structural concrete under short-term loading, covering the whole range of short-term loading conditions, from static (monotonic and cyclic) to dynamic (seismic and impact) by: 8.

Int. I Mech. Sci. Vol. 24, No. 8, pp.Printed in Great Britain. $/0 Pergamon Press Ltd. FINITE ELEMENT ANALYSIS OF METAL FORMING PROCESSES WITH ARBITRARILY SHAPED DIES S. OH Battelle Columbus Laboratories, King Avenue, Columbus, OHU.S.A.

(Received 23 May ; in revised form 21 September ) Summary Cited by:   Finite element analysis has been widely applied in mechanical, civil, and biomedical designs.

This book aims to provide the readers comprehensive views of various material models with practical examples, which would help readers understand various materials, and build appropriate material models in the finite element : Z. Yang. [3] X.

Liu: A Generic Finite Element Modelling of Complex Multi-Stage Metal Forming Process, PhD Thesis. Technology Innovation Centre, University of Central England, Dec. Technology Innovation Centre, University of Central England, Dec. ().Author: Xiao Hang Liu, Mike Daniels, Bez Shirvani. finite element technique to analyze various metal forming processes.

Eighties saw great strides in the application of FEM in metal forming. This method has been used to analyze extrusion [6], slab rolling [7,8,9], strip rolling [10], forging [11,12], stretch forming [13] etc. The recent approach is to integrate several different effects in single.

The finite-element model is constructed in the following manner [22]. A number of finite points are identified in the domain of the function, and the. Metal Forming and the Finite-Element Method values of the function and its derivatives, when appropriate, are specified at these points.

Abstract-Simulation of sheet metal forming processes involves large deformation analysis. In this paper, the finite element method has been utilized for a consistent analysis of coupled thermo- mechanical large deformation of metals.

A time dependent elastic-viscoplastic model has been used to represent the flow type behavior of metals at elevated temperatures. Numerical modelling and simulation in sheet metal forming efficiently used in the next new model.

Assuming that the finite element simulation is powerful enough to predict all the forming defects and provide optimum stamping tools and conditions, we may completely eliminate the prototype. Substructuring is a process of analyzing a large structure as a collection of (natural) components.

The FE models for these components are called substructures or superelements (SE). Physical Meaning: A finite element model of a portion of structure. Mathematical Meaning: Boundary matrices which are load and stiffness matrices.

How To Model With Finite Elements. Development of solution techniques slowed, but powerful graphics based techniques for the modelling of complex structures were developed. Computer power hungry techniques for the solution of nonlinear problems became a practical reality.

Development in the nineties has been dominated by the automation. Finite element modelling and control of new metal forming processes Article in International Journal of Machine Tools and Manufacture 46(11) September with 47 Reads.

Summary. Different kinds of finite-element approaches are available to simulate metal-forming processes. For bulk metal forming, the basic differences between these approaches arise from the constitutive equations modeling the material by: 2.

A process design approach for multi-stage stretch forming was proposed by combining the strain distribution method and finite element method (FEM) to determine the minimum stage number and.

Purchase Finite Element Analysis and Design of Metal Structures - 1st Edition. Print Book & E-Book. ISBNThe basic formulation for finite element modeling of metal forming processes is briefly recalled with the aim of treating the case of multi body interactions.

This situation occurs when the tools are considered as deformable, when the work-piece includes several materials or when the physical structure is analyzed at the micro by: 2. In this book, the author highlights that complex numerical calculations should not be used to compensate for any lack of practical knowledge of the behaviour of a structure.

This new edition up to date with the increasingly complex finite element models and nonlinear material analysis being used in 5/5(4). The application of the Finite Element Method (FEM) for the simulation of metal forming processes has provided a rational methodology for designing and optimizing these processes.

This paper reviews two general approaches — the flow formulation and the solid formulation — used in describing the deformation mechanics of metal : Shankar Rachakonda, Suren N. Dwivedi.

[9]. Numerical modelling of metal forming processes has now gained the industrial stage, and it became possible to simulate metal deformation and to calculate stress and strain states for complex processes.

By using the finite element analysis method, simulation of design. System Upgrade on Tue, May 19th, at 2am (ET) During this period, E-commerce and registration of new users may not be available for up to 12 hours.

The application of computer-aided design and manufacturing techniques is becoming essential in modern metal-forming technology. Thus process modeling for the determination of deformation mechanics has been a major concern in research.

In light of these developments, the finite element method--a technique by which an object is decomposed into pieces and treated as isolated, interacting. Xiaohang Liu has written: 'A generic finite element modelling of complex multi-stage metal forming processes' Asked in Algebra, Math and Arithmetic, Proofs G is finite group if and only if the.On the State of Finite Element Procedures for Forming Processes Klaus-Jurgen Bathe Massachusetts Institute of Technology, Cambridge, M USA Abstract.

The solution of forming processes requires reliable and efficient finite element methods to model the various complex .DEFORM is a Finite Element Method (FEM) based process simulation system designed to analyze various forming and heat treatment processes used by metal forming and related industries.

By simulating manufacturing processes on a computer, this advanced tool allows designers and engineers to.