Community Research and Development Information Service - CORDIS

Abstract

The success of the cold forging process, like the mechanical properties of the finished item, depends on the properties of the material used (its rheological behaviour and ductility) and on the conditions surrounding its implementation (tools, lubrication). Even those with many years' experience may need several attempts when juggling with the various and complex factors involved, making the process both long and complex. A calibrated simulation tool for forging operations would, therefore, be a valuable asset. The ultimate aim of this research was to create a model for the behaviour of elongated products during cold forming in order to work out the feasibility of each item. The report is divided into four sections. The first three examine the experimental methodology used to obtain the necessary data for the simulation and the fourth looks at its practical implementation. A behaviour model, based on a modified version of the Ludwig model, was applied to the set of results obtained. An in depth study was also made of the propensity of metal to suffer ductile damage. The classic criteria for breaks were also examined as well as the theory of the plasticity of porous mediums. Finally all the results of the enquiry were applied to a calibrated simulation for use in the car industry.

Additional information

Authors: GUISTI J, IRSID (FR);PIERSON G, CREAS (IT);ROBELET M, CREAS (IT)
Bibliographic Reference: EUR 18535 FR (1998) 103pp.
Availability: Available from OOPEC Sales agents
ISBN: ISBN 92-828-4891-4
Record Number: 199910855 / Last updated on: 1999-06-18
Category: PUBLICATION
Original language: fr
Available languages: fr