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; 文献标志码:A 文章编号:1672-7207(2011)02-0373-06 Theory of springback and numerical simulation of helical springs after cold coiling... there is no research about the forming and springback of helical springs considering the influence of the tensile force, the theory of it was established. The relationships between the bending moment, tensile force......
. 关键词:数值模拟;回归正交试验;铝合金;温成形;回弹;回归模型 中图分类号:TG376.2 文献标志码:A 文章编号:1672-7207(2017)10-2590-07 Springback analysis... of relationship between springback and process parameters, including initial forming temperature of blank, friction coefficient, blank holder force, die radius and clearance between punch and die......
Manufacturing, Central South University, Changsha 410083, China) Abstract: The factors affecting the thickness and the springback of the parts were investigated including initial blank temperature, blank holder.... The results show that sheet metal initial temperature has a little influence on the thickness and the springback when it changes in the range of 465-565 ℃. The influence of BHF on the forming quality......
; 文章编号:1672-7207(2011)06-1629-07 Study on springback of high strength steels deformed in equal doubly-curved die LIAO Juan, ZHOU Chi, RUAN Feng (School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China) Abstract: The theoretical prediction and experimental study of springback of high strength steel parts......
deep drawing of foil is affected by micro die cavity dimension. Key words: U deep drawing; die cavity dimension effect; springback; reduction of thickness  ... different blank holder forces. The results indicate that the angle of U part increases with the increase of blank holder force. This means that springback occurs obviously. The phenomena can be explained......
springback with prebending radii increasing. There is no significant influence of the variation of prebending radius on the size and number of the precipitated phase, as well as the mechanical properties of the alloy after age forming. Key words: 2A12 aluminum alloy; age forming; springback; stress orientation effect; mechanical properties 时效成形技术是将成形与人工时效相结合的一种先进成形方法.它的典型特点之一就是卸载后零件将产生回弹,导致零件的最终形状及尺寸......
Trans. Nonferrous Met. Soc. China 22(2012) s357-s363 Springback law of thin-walled 6061-T4 Al-alloy tube upon bending LI Heng, SHI Kai-peng, YANG He, TIAN Yu-li State Key Laboratory of Solidification... the precision bending deformation, the springback behaviors under various forming conditions should be clarified preliminarily. Taking the thin-walled 6061-T4 Al-alloy tube of 50.8 mm×0.889 mm (outer diameter......
of Mechanics and Mechatronic Equipment, Shandong University摘 要:In this work, the influence of pulse current parameters on springback and bending force of magnesium alloy during electropulse-assisted(EPA) V-bending was investigated. The experimental results showed that pulse current can effectively reduce the springback and the bending force compared......
°和120°弯管的高度变形量最大分别降低5.98%和6.35%. 关键词:绕弯成形;H96矩形管;回弹;截面变形;工艺参数;有限元模拟 中图分类号:TG386 文献标志码:A Impact of pressure die on springback and section deformation of rotary-draw bending... University, Xi’an 710072, China) Abstract: In order to control springback and section deformation of rotary-draw bending of rectangular tube, the finite element model for springback and sectional deformation......
Trans. Nonferrous Met. Soc. China 25(2015) 1043-1049 Springback and tensile strength of 2A97 aluminum alloy during age forming Hong-ying LI, Xiao-chao LU School of Materials Science and Engineering... artificial neural network (RBFANN) methods were used to study the springback and tensile strength in age forming of 2A97 aluminum alloy based on orthogonal array. The ANOVA analysis indicates......