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Trans. Nonferrous Met. Soc. China 22(2012) s416-s421 Springback characteristics of AZ31 magnesium alloy as-extruded profile in warm tension-rotation bending process XIAO Han1, ZHANG Shi-hong2, ZHOU... was researched by numerical and experimental methods. The effects of process parameters on springback characteristics of AZ31 bent profile were investigated. The results indicate that when the forming......
J. Cent. South Univ. Technol. (2011) 18: 1509-1517 DOI: 10.1007/s11771-011-0867-3 Method of closed loop springback compensation for incremental sheet forming process HAN Fei(韩飞)1, MO Jian-hua(莫健华... control model was built up for compensating the springback and enhancing the work piece precision. A coupled closed loop algorithm and a finite element method were developed to simulate and correct......
次放电不仅可以控制回弹,而且可以有效地改善弯曲件角部的变形分布,为其工程应用提供借鉴. 关键词:铝合金;磁脉冲辅助冲压;回弹控制 中图分类号:TG391 文献标志码:A Springback... Hangkong University, Nanchang 330063, China; 2. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China) Abstract: To evaluate the efficacy of springback-control......
Theoretical analysis on springback of L-section extrusion in rotary stretch bending process YU Cheng-long, LI Xiao-qiang School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, China Received 19 November 2010; accepted 4 March 2011 Abstract: The theoretical analysis of springback in rotary stretch bending process of L-section extrusion was studied. The models......
simulation and springback prediction of Ti55 alloy electrical assisted V-bending[J]. The Chinese Journal of Nonferrous Metals, 2021, 31(4): 847-857. DOI: 10.11817/j.ysxb.1004.0609.2021-35962 钛合金由于比强度高,密度低...,表明变形区弯曲变形的长度越大,则积累的弹性变形总量越大,回弹越大[24].所以,弯曲角越大,回弹量越大. 图8 回弹角计算 Fig.8 Calculation of springback angle 图9 弯曲参数对回弹的影响 Fig. 9 Effects of bending parameters on springback angle 随着......
; (1) 式中:d0为模具曲面与初始试样间的最大弦高;dmax为试样回弹后与模具面的最大弦高.回弹定义示意图如图2所示. 图2 回弹定义示意图[2] Fig. 2 Schematic drawing of springback[2] 沿板材轧制方向用线切割...,预拉伸的促进蠕变机制与预拉伸引起厚度减小之间为耦合作用关系,从而造成了回弹率先降后增的规律,且前者的降低回弹作用要明显大于后者的增大回弹作用. 图3 相同曲率半径与热处理条件下的回弹与预拉伸关系 Fig. 3 Relationship between springback and pre-stretching degree with same curvature......
Stress and Springback Analyses of API X70 Pipeline Steel Under 3-Roller Bending via Finite Element MethodWenbo Zhao1,T.Warren Liao11. Department of Mechanical and Industrial Engineering,Louisiana... in order to produce product with desired radii;(2) much like a gradual springback process, the radii of curvature gradually increase from the top roller to the exit-side bottom roller;(3) under......
developed by the large scale commercial finite element software MSC.Marc, and 7055 aluminum alloy stiffened panel creep age forming process simulations were completely conducted. Then springback of the stiffened plate after forming was calculated by ATOS Professional software, and its correctness was verified by experimental studies. The results show that, the springback of the stiffened plate......
Trans. Nonferrous Met. Soc. China 29(2019) 1152-1160 Constitutive modeling and springback prediction of stress relaxation age forming of pre-deformed 2219 aluminum alloy Kai WANG1,2, Li-hua ZHAN1,2... and the springback is 16.8%. This indicates that the proposed stress relaxation ageing constitutive model provides a good prediction on the springback of such stiffened panel during its ageing process......
Semi analytical modeling of springback in arc bending and effect of forming load S. K. PANTHI, N. RAMAKRISHNAN Advanced Materials and Processes Research Institute (AMPRI), Bhopal-26 (MP), India Received 14 December 2010; accepted 20 March 2011 Abstract: The analytical model for springback in arc bending of sheet metal can serve as an excellent design support. The amount of springback......