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http://dx.doi.org/10.5228/KSTP.2014.23.7.413

FEA and Experiment Investigation on the Friction Reduction for Ultrasonic Vibration Assisted Deep Drawing  

Kim, S.W. (Materials Deformation Division, Korea Institute of Materials Science)
Son, Y.G. (Materials Deformation Division, Korea Institute of Materials Science)
Lee, Y.S. (Materials Deformation Division, Korea Institute of Materials Science)
Publication Information
Transactions of Materials Processing / v.23, no.7, 2014 , pp. 413-418 More about this Journal
Abstract
The current study presents experimental and numerical results on the effect of ultrasonic vibrations on a cylindrical cup drawing of a cold rolled steel sheet(SPCC). An experimental apparatus, which can superimpose high frequency oscillations during deep drawing, was constructed by installing on the tooling ultrasonic vibration generators consisting of a piezoelectric transducer and a resonator. Conventional and vibration-assisted cylindrical deep drawing tests were conducted for various drawing ratios, and the limiting drawing ratios(LDR) for both methods were compared. To evaluate quantitatively the contribution from the ultrasonic vibrations to the reduction of friction between tools and material finite element analyses were conducted. Through a series of parametric analyses, the friction coefficients, which minimized the differences of punch load data between the experiments and simulations, were determined. The results show that the application of ultrasonic vibration effectively improves the LDR by reducing the friction between the tools and the material.
Keywords
Deep Drawing; Ultrasonic Vibration; LDR; FEM; SPCC;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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