Springback Behavior of an Invar Sheet and Its Perforated Form

Yi Che Lee; Fuh Kuo Chen

doi:10.4028/www.scientific.net/MSF.505-507.781

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HomeMaterials Science ForumMaterials Science Forum Vols. 505-507Springback Behavior of an Invar Sheet and Its...

Springback Behavior of an Invar Sheet and Its Perforated Form

Abstract:

The springback behavior of an invar sheet and its perforated form were examined in the present study. The mechanical properties for invar sheet and perforated invar-sheet at elevated temperatures were first obtained from tensile tests. The test results suggest that both invar sheet and perforated invar-sheet have favorable formability at temperature higher than 200oC. An analytical model was also established to predict the springback of the invar sheet and its perforated form under bending conditions at various elevated temperatures. In order to verify the predicted results, the V-bending tests were conducted for the invar sheet at various temperatures ranging from room temperature to 300. The experimental data indicate that the springback decreases with the rise in temperature for both invar sheet and perforated invar-sheet. The good agreement between the experimental data and the predicted values confirms the validity of the proposed theoretical model as well.

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Periodical:

Materials Science Forum (Volumes 505-507)

Pages:

781-786

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.505-507.781

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Online since:

January 2006

Authors:

Yi Che Lee, Fuh Kuo Chen

Keywords:

Invar Sheet, Perforated Form, Springback, Theoretical Model, V-Bending Test, Warm Forming

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