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Type: Artigo de periódico
Title: Application of the finite element method in cold forging processes
Author: Roque, Cristina Maria Oliveira Lima
Button, Sérgio Tonini
Abstract: The demand for more efficient manufacturing processes has been increasing in the last few years. The cold forging process is presented as a possible solution, because it allows the production of parts with a good surface finish and with good mechanical properties. Nevertheless, the cold forming sequence design is very empirical and it is based on the designer experience. The computational modeling of each forming process stage by the finite element method can make the sequence design faster and more efficient, decreasing the use of conventional trial and error methods. In this study, the application of a commercial general finite element software - ANSYS - has been applied to model a forming operation. Models have been developed to simulate the ring compression test and to simulate a basic forming operation (upsetting) that is applied in most of the cold forging parts sequences. The simulated upsetting operation is one stage of the automotive starter parts manufacturing process. Experiments have been done to obtain the stress-strain material curve, the material flow during the simulated stage, and the required forming force. These experiments provided results used as numerical model input data and as validation of model results. The comparison between experiments and numerical results confirms the developed methodology potential on die filling prediction.
Subject: Metal forming
finite element analysis
cold forging design
Editor: The Brazilian Society of Mechanical Sciences
Rights: aberto
Identifier DOI: 10.1590/S0100-73862000000200005
Date Issue: 1-Jan-2000
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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