Journal
JOURNAL OF MANUFACTURING PROCESSES
Volume 20, Issue -, Pages 304-313Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jmapro.2015.06.016
Keywords
Hydrodynamic forming; Experiment; Equation of state; Strain rate; Johnson-Cook model
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Frequent use of hydroforming in automotive and aerospace industries requires intensive research of all aspects of this relatively new technology. In this paper we have studied the characteristics of aluminum tubular blank free bulging during hydrodynamic forming; both experimentally, and through numerical finite element analysis using LS-DYNA. We obtained the quantitative description of a pressure wave in working liquid, which directly relates to the load on the blank. The finite element analysis examined how a computationally efficient simulation model could be achieved, to replicate the experimental testing results. It was intended to correlate the simulation with experimental results; we were successful in demonstrating that the simulation can achieve an acceptable level of correlation with the experimental results. Crown Copyright (C) 2015 Published by Elsevier Ltd. on behalf of The Society of Manufacturing Engineers. All rights reserved.
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