Transactions of Materials and Heat Treatment

Title：Numerical calculation and analysis on spring back of sheet metal stretch bending

Authors： DU Song(School of Mechanical Engineering and Automation Beihang University)

Unit：

KeyWords： Stretch bending Spring back Residual stress

ClassificationCode：TG386

year,vol(issue):pagenumber：2004,29(5):19-22

Abstract：

Increment strain theory is applied to calculating the distribution of the stress in stretch bending of sheet metal. The formed zone is divided into many elements to determine the strain by the condition that metal remains constant volume in deformation. Then according to the distribution of the stress, spring back and residual stress have been computed.

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Reference：

1　WooDM Analysisofthecup drawingprocessJournalofMechani calEngineeringScience,1964,6(2):116～131
2　AlMakkyMM ,WooDM Deep drawingthroughtractrixtypediesInternationalJournalofMechanicalScience,1980,22:467～480
3　胡世光,陈鹤峥板料冷压成形原理北京:国防工业出版社,1989

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