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Supervised by Ministry of Industry and Information Technology of The People's Republic of China Sponsored by Harbin Institute of Technology Editor-in-chief Yu Zhou ISSNISSN 1005-9113 CNCN 23-1378/T

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Related citation:Hai-Yan Yu,Chen-Chen Ai.Experimental Investigation on Springback Performance of Transformation-induced Plasticity Steel Sheet during Cyclic Bending Process[J].Journal of Harbin Institute Of Technology(New Series),2013,20(5):69-74.DOI:10.11916/j.issn.1005-9113.2013.05.013.
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Experimental Investigation on Springback Performance of Transformation-induced Plasticity Steel Sheet during Cyclic Bending Process
Author NameAffiliation
Hai-Yan Yu School of Automotive Engineering, Tongji University, Shanghai 201804, China 
Chen-Chen Ai School of Automotive Engineering, Tongji University, Shanghai 201804, China 
Abstract:
In order to investigate the springback performance of a cold-rolled transformation-induced plasticity (TRIP) steel sheet during cyclic bending, three-points bending experiments were performed. The specimen was firstly forward bended and then reversed bended according to three basic punch strokes, 10 mm, 20 mm and 30 mm, respectively. The outlines of the deformed specimens, punch load and crosshead displacement were obtained. The experimental procedures and the method of determining the springback displacement were reported in detail. The contribution of the strain hardening and decrease of elastic modulus to the overall springback was explained. The results demonstrated that springback increases both with the cycles and with the punch stroke during the cyclic bending process. Furthermore, springback in forward bending is larger than that in the corresponding reverse bending. This may be helpful to understand the complex springback behavior of the complicated sheet metal panels.
Key words:  TRIP steel  springback  cyclic bending
DOI：10.11916/j.issn.1005-9113.2013.05.013
Clc Number:142.1
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