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http://dx.doi.org/10.5228/KSTP.2011.20.5.344

Influence of Frictional Behavior Depending on Contact Pressure on Springback at U Draw Bending  

Han, S.S. (금오공과대학교 기계공학과)
Publication Information
Transactions of Materials Processing / v.20, no.5, 2011 , pp. 344-349 More about this Journal
Abstract
Variation of contact pressure causes change of friction coefficient, which in turn changes stress distribution in the sheet being formed and final springback. In the present study, U-draw bending experiments were carried out under constant blank holding force(BHF) and different blank sizes, and finite element analysis was conducted with and without considering contact pressure effect on friction. When the BHF was sufficiently high, the degree of springback was different between constant blank holding pressure condition and that with varying blank holding pressure. Finite element analysis considering the influence of contact pressure effect on friction could explain the occurrence of springback.
Keywords
High Strength Steel; Blank Holding Pressure; Stress Distribution; Finite Element Analysis; Coated Steel Sheet;
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Times Cited By KSCI : 2  (Citation Analysis)
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