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Numerical simulation of formability tests of pre-deformed steel blanks

Lumelskyy D., Rojek J., Pęcherski R., Grosman F., Tkocz M.

Archives of Civil and Mechanical Engineering

2012

Vol. 12, no. 2

133--141

This paper presents the results of numerical simulations of the formability tests carried out for a pre-stretched 1 mm thick DC04 steel sheet. Simulation consisted of the subsequent stages as follows: uniaxial stretching of the sheet, unloading and stress relaxation, cutting specimens out of the pre-stretched sheet and bulging the blank with a hemispherical punch. Numerical modeling has been verified by comparison of the simulation results with the experimental ones. Good concordance of the results indicates correct performance of the numerical model and possibility to use it in further theoretical studies.