| RESEARCH PAPER |
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| Research on Stretch Bending Forming of Stainless Steel Curved Beam |
| ZHU Lijuan, WANG Min, GU Zhengwei, HE Lingling
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| College of Materials Science and Engineering, Jilin University, Changchun 130022 |
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Abstract The stretch bend forming process of roof curve beam with stainless steel of rail vehicle was simulated by ABAQUS. The influence factors and control methods of the section distortion and the springback of L-section profile after bending were studied. Results showed that the vertical depth of the mold had great influence on the section distortion, while, the effect of stretching on the section distortion was relatively small. The wrap-elongation had the largest impact on the section distortion caused by the springback, the post-elongation had the largest impact on the side bending caused by springback. The mold surface compensation method could effectively reduce the springback, improve the accuracy of the contour. The experimental results showed that when the amount of pre-elongation and the amount of post-elongation were both 1%, the amount of wrap-elongation was 7.5%, the depth of the die was H-0.5 mm and the die surface amount was 1.1 times of the initial maximum springback amount, high quality stainless steel profile stretch bending parts could be produced.
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Published: 25 December 2017
Online: 2018-05-08
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1 Frank V. Extrusion, channel, and extrusion bending: A review[J].J Mater Processing Technol, 1999,87:1.
2 Gu Zhengwei, Liu Huamin, Liu Yumei, et al. Simulation of stretch bending forming process of stainless section steel[J].Die Mould Ind, 2006(8):42(in Chinese).
谷诤巍,刘化民,刘玉梅,等. 不锈钢型材拉弯成形工艺模拟研究[J]. 模具工业,2006(8):42.
3 Diao Keshan, Zhou Xianbin, Jin Chaohai, et al. A numerical study on the force controlled stretch bending of aluminum extrusion with complex cross section[J]. Mater Sci Technol, 2004,12(4):413(in Chinese).
刁可山,周贤宾,金朝海,等. 复杂截面型材力控制拉弯成形数值模拟分析[J]. 材料科学与工艺,2004,12(4):413.
4 Paulsen F, Welo T. Application of numerical simulation in the bending of aluminium-alloy profiles[J].J Mater Processing Technol, 1996,58(2):274.
5 Diao Keshan, Zhou Xianbin, Li Xiaoxing, et al. Stretch bending of aluminum extrusion[J]. J Beijing University of Aeronautics, 2005,31(2):134(in Chinese).
刁可山, 周贤宾, 李晓星, 等. 矩形截面型材拉弯成形[J].北京航空航天大学学报, 2005,31(2):134.
6 Hopperstad O S, Berstad T, Ilstad H, et al. Effects of the yield criterion on local deformations in numerical simulation of profile forming[J]. J Mater Processing Technol, 1998,80-81(1):551.
7 Clausen A H, Hopperstad O S, Langseth M. Sensitivity of model parameters in stretch bending of aluminum extrusions[J]. Int J Mech Sci,2001,43(2):427.
8 Wang Shengman. Research on stretch bend forming of railway vehicle stainless steel profile components by numerical simulation and experiment[D].Dalian:Dalian Jiaotong University,2013(in Chinese).
王胜满. 轨道车辆车体不锈钢型材构件拉弯成形数值模拟与实验研究[D].大连:大连交通大学,2013.
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2017, Vol. 31 
