|
|
A Refined Model of Three-roller Elastoplastic Asymmetrical Pre-bending of Plate |
Zhi-qiang ZHANG,Jian-li SONG,Jian-hua FU,Yong-tang LI,Yi-na GUO |
School of Material Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, Shanxi, China |
|
|
Abstract The geometry of plate after edge pre-bending mode is compared with that after roll-bending mode and the relationship among edge pre-bending angle, pre-bending edge length, and cylindrical desired radius is presented for a three-roller plate bender with bottom rollers adjustable horizontally. The analytical moment-curvature model and springback model for pure bending are established, assuming that the stress-strain relationship of material is linear, and the material is in plain strain and yields according to Mises yield criterion. The mathematical model for three-roller edge pre-bending of plate is developed considering the effect of pre-bending edge length, bottom roller radius, friction between plate and roller, etc. The plate tensile test and plate bending test are done and the numerical results agree well with the test data. The results are shown graphically and analyzed in the following aspects: (1) the error between numerical results and test data of top roller force; (2) the influence of bottom roller radius, relative curvature, and bending arc length on springback angle; (3) the relationship between springback ratio and edge pre-bending angle.
|
Received: 02 July 2013
Published: 19 March 2014
|
Fund:Project guided by science and technology in Inner Mongolia Autonomous Region |
Corresponding Authors:
Zhi-Qiang ZHANG
E-mail: zzq704@163.com
|
|
|
|
[1] |
Ri-huan Lu,Xiang-hua Liu,Shou-dong Chen,Lu Feng,Xian-lei Hu,Li-zhong Liu. Springback behavior of tailor rolled blank in U-shape forming[J]. Chinese Journal of Iron and Steel, 2017, 24(8): 787-794. |
[2] |
Chang-gen Shi,Xuan Yang,Yu-heng Ge,Jun You,Hong-bao Hou. Lower limit law of welding windows for explosive welding of dissimilar metals[J]. Chinese Journal of Iron and Steel, 2017, 24(8): 852-857. |
[3] |
Hui ZHANG,Peng HU,,Ming-lin WANG. Mechanism and Improvement of Straight Edge Seam Defect on Hot-rolled Plate Surfaces through Use of Chamfered Slabs[J]. Chinese Journal of Iron and Steel, 2016, 23(6): 539-546. |
[4] |
Hua-wei ZHANG,,Ying-ping GUAN,Jia-lu WU,Xiang-hua LIU. Transverse Bending Characteristics in U-channel Forming of Tailor Rolled Blank[J]. Chinese Journal of Iron and Steel, 2016, 23(12): 1249-1254. |
[5] |
Zhi-yu GAO,,Tao PAN,Zhuo WANG,Guo-quan LIU,,5,Hang SU. Hot Deformation Behavior of a Novel Ni-Cr-Mo-B Ultra-heavy Plate Steel by Hot Compression Test[J]. Chinese Journal of Iron and Steel, 2015, 22(9): 818-826. |
[6] |
Wei-hua CHEN,Juan LIU,Zhen-shan CUI,Ying-jie WANG,Ying-rui WANG. A 2.5-dimensional Analytical Model of Cold Leveling for Plates with Transverse Wave Defects[J]. Chinese Journal of Iron and Steel, 2015, 22(8): 664-671. |
|
|
|
|