Computational methods for predicting material processing by M Predeleanu

By M Predeleanu

The papers during this ebook care for computational equipment for predicting fabric processing defects. utilizing contemporary advances in finite pressure plasticity and viscoplasticity, harm modelling, bifurcation and instability idea, fracture mechanics and computing device numerical ideas, new techniques to mechanical illness research are proposed. applicable tools for explaining and fending off the defects resulting in fracture, excessive porosity, pressure localization or bad geometrical imperfections are awarded. moreover, a few papers are dedicated to new formulations and new calculation algorithms for use for fixing the forming difficulties. eventually, papers care for actual description of defects happening in forming and slicing operations, targeting the tutorial and functional curiosity of those subject matters. this is often the 1st ebook to accommodate the prediction of defects happening in fabric forming strategies; it includes a lot of curiosity from either a theoretical and a pragmatic point of view

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Additional resources for Computational methods for predicting material processing defects : proceedings of the International Conference on Computational Methods for Predicting Material Processing Defects, September 8-11, 1987, Cachan, France

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Eng. Mat. Tech . , 99 ( 1 977) 264-274. J. O. Kumpulainen, Factors influencing the forming limit diagram, J. Mec h. Work. , 3 ( 198U)289-302. Computational Methods for Predicting Material Processing Defects, edited by M. , Amsterdam, 1987 — Printed in The Netherlands 47 A FINITE ELEMENT ANALYSIS OF SPRINGBACK IN PLANE STRAIN FOLDING WITH BINDERS OF HIGH STRENGTH STEEL SHEETS M. BRUNET Laboratoire de Mécanique des Solides INSA - 304 - 69621 VILLEURBANNE - FRANCE SUMMARY For the purpose of studying the folding and springback of high strength steel sheets, a plane strain finite element program is developed.

Effective strain distribution for EX3: 46 % reduction. Computational Methods for Predicting Material Processing Defects, edited by M. * THREE DIMENSIONAL SIMULATION INCLUDING FAILURE CRITERION 0. BRANSWYCK1, C. DAVID1, C. L. P. BILLARD2, D. P. ), hot rolling of heavy ingots is modeled using viscoplatic description of the material through a NURTUN-HUFF law. In order to predict surface defects the material damage is estimated by the ÜYANE criterion. INTRODUCTION Heavy ingots (200 x 400 x 2500 mm) of copper based alloys are hot rolled (at 925 °C) to a final thickness of 11 mm for further cold rolling.

02/mm. For brass the discrepancies may be due to the theoretical yield loci and constitutive equation. Besides, the coefficients n and M may exhibit variations between uniaxial and biaxial tests and thereby neck profile be influenced. A relevant aspect in the analysis of the profile of local necking is to provide an alternative method to determine M-value and the influence of the initial thickness inhomogeneity on the morphology of the neck. In addition, the approach provides a method to investigate the neck profile in order to correlate the local limit strain with the corresponding strain gradient λ/y.

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