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]. Chinese Journal of Mechanical Engineering, 2008, 44(5): 34-38. [7] SUN Yong-na, WAN Min, WU Xiang-dong. Wrinkling prediction in rubber forming of Ti-15-3 alloy[J]. Transactions of Nonferrous Metals... forming 1.1.1 弹性起皱失稳分析 管坯外压缩径原理如图1所示.选用柱坐标系分析缩径过程中的起皱失稳现象.图1中,x为变形区轴向坐标;r为径向坐标;θ为环向坐标.缩径过程中管坯成形区体积被压缩,设ω,u,v分别为筒壁中性层任意点径向,轴向,环向的位移,假设管坯任一截面环向屈曲形态满足余弦波分布,则位移表达式为  ......
EXPERIMENTAL TESTING OF DRAW-BEAD RESTRAINING FORCE IN SHEET METAL FORMING J.H.Yang1,X.Y.Ruan1,D.N.He1,J.Chen1 (1.Department of Plasticity Forming Engineering, Shanghai Jiao Tong University, Shanghai 200030, China) Abstract:Due to complexities of draw-bead restraining force calculated according to theory anddepending on sheet metal forming properties experiment testing system......
such as experimental and finite element analysis of forming problems. Flexible tool materials such as polyurethane and rubber are being used increasingly in the design of metal forming tools [1... in rubber-pad forming process that considered local contact conditions and to evaluate influences of friction models on finite element results. FE simulations were carried out using commercial software......
and development of gelcasting techniques are reviewed. The principles and processes of this forming technology are discussed. Gel systems are summed up and divided into synthetic and natural gel systems according to the source of gel systems. Applications are commented. Finally, the problems and development of gelcasting technology are also pointed out and analyzed. Key words: gelcasting; forming......
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Experimental Research on Laser Clad Forming and Its Micro-Crackles Controlling Sun K1,ZHOU K G C1,SONG J L1,DENG Q L1 (1.Shanghai Jiaotong University, Shanghai 200030, P. R. China) 摘要:Laser clad forming (LCF)is a new kind of rapid manufacturing technology. It can directly manufacture compacted metal components and has many advantages. Some experimentalresearches have been carried out......
by laser solid forming YANG Hai-ou(杨海欧)1, 2, ZHANG Shu-ya(张书亚)1, 2, LIN Xin(林鑫)1, 2,HU Yun-long(胡云龙)1, 2, HUANG Wei-dong(黄卫东)1, 2 1. State Key Laboratory of Solidification Processing, Northwestern... South University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2021 Abstract: A series of single track clads of Inconel 625 alloy were fabricated by laser solid forming. To achieve......
of viscous medium [13-17]. In this work, the methyl vinyl silicone rubber with excellent thermal stability and mechanical property was chosen as viscous medium during warm forming process..., the methyl vinyl silicone rubber with excellent thermal stability and heat transfer performance was chosen as the viscous medium. The finite element analysis and experiments of viscous warm pressure bulging......
COMPUTER AIDED ANALYSIS FOR COLD ROLL FORMING THIN CHANNEL SECTION Z.W.Han1,C.LIN2,L.Q.Ren1,Y.Q.Nie3 (1.Key Laboratory of Terrain Machine Bionic Technology, Jilin University, Changchun 130025, China;2.Institute of Rolling Mill, Yanshan University, Qinhuangdao 066004, China;3.Mechanics Department, Jilin University, Changchun 130025, China) Abstract:Cold roll forming is a complicated metal......