Análise da influência de parâmetros do processo de trefilação de barras cilíndricas de aço AISI 1045 via simulação numérica computacional / Title: parameters analysis of the drawing of AISI 1045 steel rods via FEM

AUTOR(ES)
FONTE

IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia

DATA DE PUBLICAÇÃO

2012

RESUMO

This paper aims to analyze the drawing process using simulation and evaluate the influence of process variables such as lubricant (friction coefficient) and angle of die as well as verify the effectiveness of simulation to preview the drawing force, temperature and residual stresses. Experimental work was carried out involving the determination of friction coefficient by means of the ring test and determination of flow curves by compression tests. The calculations of the stress of the process using data from the flow curves and equations from the literature have been carried out. Later on the experimental results were compared to the simulated results. It was also used in addition, the optimized simulation to evaluate the residual stresses and the results were then compared with experimental results obtained by neutron diffraction for the same bars that were extracted from the industrial process. The results are very influenced by the flow stress curve chosen. The simulation was satisfactory for the estimation of the drawing force but must be improved for a better estimation of residual stresses.

ASSUNTO(S)

simulação computacional finite element method elementos finitos residual stresses drawing force tensão residual temperature trefilação aisi 1045 steel aço

ACESSO AO ARTIGO

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