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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/34226

Title: Stamping of advanced high strength steel sheets with Bauschinger effect considered
Authors: Heng-Kuang Tsai;Ying-Jhih Hong;Fuh-Kuo Chen
Contributors: NTOU:Department of Mechanical and Mechatronic Engineering
Date: 2012-04-30
Issue Date: 2013-10-07T02:07:52Z
Publisher: Advanced Science Letters
Abstract: The prediction of springback by the finite element method, when stamping the advanced high strength steel sheet DP590Y, with the Bauschinger effect considered was examined in the present study. Except probing into the difference of the Bauschinger effect exhibited between 270 single phase steel and DP590Y dual phase steel, the stamping of a vehicle door beam was also analyzed by the finite element simulation with different yield criteria and work hardening rules applied. The tension-compression tests were conducted and the Yoshida- Uemori model (Y-U model) was fitted by the experimental data for the finite element simulations employed in the present study. The actual stamping of a vehicle door beam was also implemented in the present study to validate the finite element simulation results. The deformation mechanics of fundamental bending of sheet metals was investigated and the results indicate that the simulations of sheet metal experiencing the tension and compression deformation during the stamping process need to include the Bauschinger effect to render a more accurate prediction in springback. The finite element analysis also reveals that the DP590Y steel exhibits more significant Bauschinger effect that the 270 conventional steel does. From both the simulation results and the experimental data, it is found as long as the sheet metal under the deforming mechanism of cyclic tension and compression loading, the accuracy of springback in prediction by the finite element simulation turns out to have great increase in effect when selected material model with the Bauschinger effect considered.
Relation: 9(1), pp.8-15(8)
URI: http://ntour.ntou.edu.tw/handle/987654321/34226
Appears in Collections:[機械與機電工程學系] 期刊論文

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