Investigation on deformation behavior of sheet metals in viscous pressure bulging based on ESPI

2010 ◽  
Vol 210 (11) ◽  
pp. 1536-1544 ◽  
Author(s):  
Zhong-Jin Wang ◽  
Yan Liu
Keyword(s):  
Deformation Behavior ◽  
Sheet Metals ◽  
Viscous Pressure ◽  
Viscous Pressure Bulging

Numerical Analysis for Process Parameter Effect in Electromagnetic Impact Welding of Aluminum Alloy Sheet

2014 ◽  
Vol 548-549 ◽  
pp. 297-300
Author(s):  
Dae Yong Kim ◽  
Hyeon Il Park ◽  
Ji Hoon Kim ◽  
Sang Woo Kim ◽  
Young Seon Lee
Keyword(s):  
Aluminum Alloy ◽  
Numerical Analysis ◽  
Deformation Behavior ◽  
Three Dimensional ◽  
Alloy Sheet ◽  
Aluminum Alloy Sheet ◽  
Sheet Metals ◽  
Charge Voltage ◽  
Flat Sheet ◽  
Impact Welding

Studies on electromagnetic impact welding between similar or dissimilar flat sheet metals using the flat one turn coil have been recently achieved. In this study, three dimensional electromagnetic-mechanical coupled numerical simulations are performed for the electromagnetic impact welding of aluminum alloy sheets with flat rectangular one turn coil. The deformation behavior during impact welding was examined. The effect of process parameters such as charge voltage, standoff distance and gap distance were investigated.

Viscous pressure bulging of aluminium alloy sheet at warm temperatures

2007 ◽  
Vol 21 (10) ◽  
pp. 1505-1511 ◽  
Author(s):  
Jianguang Liu ◽  
Qiucai Peng ◽  
Yan Liu ◽  
Zhongjin Wang
Keyword(s):  
Aluminium Alloy ◽  
Alloy Sheet ◽  
Viscous Pressure ◽  
Viscous Pressure Bulging

Effect of Loading Location of Viscous Medium on Sheet Deformation in Viscous Pressure Bulge (VPB) Test

2010 ◽  
Vol 154-155 ◽  
pp. 775-780
Author(s):  
Jian Guang Liu ◽  
Zhong Jin Wang ◽  
Qing Yuan Meng ◽  
Yu Long Zheng
Keyword(s):  
High Pressure ◽  
Sheet Metal ◽  
Deformation Behavior ◽  
Central Zone ◽  
Viscous Medium ◽  
Dome Height ◽  
Loading Mode ◽  
Viscous Pressure ◽  
Viscous Pressure Forming ◽  
Sheet Deformation

Viscous pressure forming (VPF) uses a highly viscous but flowable material as pressure-carrying medium (PCM). Due to the relative low flowability of viscous medium compared with fluid, nonuniform pressure distribution in viscous medium can be used to control and regulate the deformation sequence of the workpiece through controlling the loading mode of viscous medium. In the present study, viscous pressure bulge (VPB) tests with three kinds of loading location of viscous medium (central zone, corner zone and the whole deformation zone) are conducted and the influences of loading location of viscous medium on sheet deformation behavior are investigated via numerical simulations and experiments. It is found that changing the loading location of viscous medium can greatly affect the deformation behavior of sheet metal. When the viscous medium is injected from the die corner zone, a local high pressure formed at the corner zone of sheet metal and a higher limiting dome height and strains are obtained.

Deformation Behavior of Adhesive Layer in Stretch-Bending/Unbending for Adhesively Bonded Sheet Metals

2014 ◽  
Vol 939 ◽  
pp. 19-24 ◽  
Author(s):  
Michihiro Takiguchi ◽  
Taro Tokuda ◽  
Tetsuya Yoshida ◽  
Takeshi Uemori ◽  
Fusahito Yoshida
Keyword(s):  
Shear Deformation ◽  
Deformation Behavior ◽  
Adhesive Layer ◽  
Sheet Metals ◽  
Adhesively Bonded ◽  
Plastic Working ◽  
Cyclic Shear ◽  
Adhesive Layers ◽  
Stretch Bending ◽  
Bending Behavior

In this paper, the deformation behavior of adhesive layer in stretch-bending/unbending for adhesively bonded sheet metals was investigated by experiments and finite element method (FEM). We paid special attention to the cyclic shear deformation of the adhesive layers during the plastic working. Major results obtained are summarized as follows: (1) When the adhesively bonded sheet metals is bent and pulled out at a 90° angle, shear deformation due to bending of the adhesive layer starts shortly before reaching the die corner and unbending starts at the middle of the corner. (2) The die radius has a large influence on the bending behavior. (3) It is possible to suppress shear deformation of the adhesive layer by using a material with small tensile strength as one of the two adherends.

Die-Bending of Adhesively Bonded Sheet Metals

2014 ◽  
Vol 626 ◽  
pp. 103-108 ◽  
Author(s):  
Michihiro Takiguchi ◽  
Taro Tokuda ◽  
Tetsuya Yoshida ◽  
Takeshi Uemori ◽  
Fusahito Yoshida
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Shear Deformation ◽  
Deformation Behavior ◽  
High Speed ◽  
Adhesive Layer ◽  
Sheet Metals ◽  
Adhesively Bonded ◽  
Acrylic Adhesive ◽  
Punch Radius

In this paper, the deformation behavior of adhesive layer in die-bending for adhesively bonded sheet metals was investigated by experiments and finite element method (FEM). We paid special attention to the bending/unbending shear deformation of the adhesive layer during the die-bending of adhesively bonded sheet metals by using highly ductile acrylic adhesive. Major results obtained are summarized as follows: (1) The bending/unbending shear deformation of the adhesive layer was observed during the die-bending. (2) The punch radius has a large influence on the die-bending in the adhesively bonded sheet metals. (3) It is desirable to perform die-bending at high speed as well as air-bending.

Effects of viscosity on viscous pressure bulging (VPB) of Al1060 sheet

2015 ◽  
Vol 86 (1-4) ◽  
pp. 215-225 ◽  
Author(s):  
Binxian Yuan ◽  
Wa Fang ◽  
Jiguang Li ◽  
Zhoude Qu ◽  
Yujun Cai ◽  
...  
Keyword(s):  
Viscous Pressure ◽  
Viscous Pressure Bulging

Influence of Roller Shape on Deformation Behavior in Roll Bending of Structural Channels

2014 ◽  
Vol 622-623 ◽  
pp. 936-942
Author(s):  
Yuki Murasato ◽  
Takahiro Makiyama ◽  
Toshiya Teramae
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Deformation Behavior ◽  
The Other ◽  
Sheet Metals ◽  
Element Analysis ◽  
Other Hand ◽  
Roll Bending ◽  
Sectional Shape

Roll bending is a useful technology for manufacturing a wide variety of products in small quantities. However, the roll bending of structural channels, which have a complicated sectional shape, causes irregular deformation. On the other hand, there are fewer reports on the bending of structural channels compared to those on the roll bending of sheet-metals. The purpose of this study is to clarify the deformation behavior in the roll bending of structural channels. The present paper reports on the results from a finite element analysis of the effects of the roller shape on the deformation behavior in the roll bending of structural channels.

scholarly journals Shear Deformation Behavior of Adhesive Layer in Stretch-bending/unbendingof Adhesively Bonded Dissimilar Sheet Metals

2015 ◽  
Vol 51 (7) ◽  
pp. 347-354
Author(s):  
Taro TOKUDA ◽  
Tetsuya YOSHIDA ◽  
Takeshi UEMORI ◽  
Michihiro TAKIGUCHI ◽  
Fusahito YOSHIDA
Keyword(s):  
Shear Deformation ◽  
Deformation Behavior ◽  
Adhesive Layer ◽  
Sheet Metals ◽  
Adhesively Bonded ◽  
Stretch Bending
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