Effect of blank holder force control in deep-drawing process of magnesium alloy sheet

2005 ◽  
Vol 170 (3) ◽  
pp. 579-585 ◽  
Author(s):  
Shoichiro Yoshihara ◽  
Ken-ichi Manabe ◽  
Hisashi Nishimura
Keyword(s):  
Magnesium Alloy ◽  
Force Control ◽  
Deep Drawing ◽  
Alloy Sheet ◽  
Drawing Process ◽  
Blank Holder Force ◽  
Blank Holder ◽  
Deep Drawing Process ◽  
Magnesium Alloy Sheet

Numerical Simulation of Magnesium Alloy Sheet in Thermal Deep-drawing Process

Magnesium ◽  
2005 ◽  
pp. 848-853
Author(s):  
Shi-Hong Zhang ◽  
Kun Zhang ◽  
Zhong-Tang Wang ◽  
Chuan-Fu Yu ◽  
Yi Xu ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Magnesium Alloy ◽  
Deep Drawing ◽  
Alloy Sheet ◽  
Drawing Process ◽  
Deep Drawing Process ◽  
Magnesium Alloy Sheet

Numerical Simulation of Warm Deep Drawing of AZ31 Magnesium Alloy Sheet with Variable Blank Holder Force

2007 ◽  
Vol 340-341 ◽  
pp. 639-644 ◽  
Author(s):  
Ying Hong Peng ◽  
Qun Feng Chang ◽  
Da Yong Li ◽  
Hu Jie ◽  
Xiao Qin Zeng
Keyword(s):  
Numerical Simulation ◽  
Magnesium Alloy ◽  
Deep Drawing ◽  
Alloy Sheet ◽  
Az31 Magnesium Alloy ◽  
Blank Holder Force ◽  
Blank Holder ◽  
Magnesium Alloy Sheet ◽  
Variable Blank Holder Force ◽  
Az31 Magnesium Alloy Sheet

Blank holder force (BHF) plays an important role in sheet metal forming. Previous studies demonstrated that variable blank holder forces can improve the cold formability of steel blank, but the research on the application of variable blank holder force in warm forming of magnesium sheet forming has not been well investigated. In this study, the mechanical property of AZ31 magnesium alloy sheet is measured through some uniaxial tensile tests. In order to obtain the variational rule of the BHF, a mathematical model of BHF is deduced based on the energy theory. The variational rule of the BHF over the punch stroke is analyzed. Finally, three profiles of the BHF curve are designed, and the numerical simulation of warm deep drawing process of magnesium alloy sheet is also performed. A suitable variable blank holder force scheme is obtained through comparison among three results of simulation. The simulation indicates that the limiting drawing ratio of AZ31 magnesium alloy sheet can be improved from 3.0 to 3.5 with the suitable blank holder force varied by an inverted V curve.

Blank holder force optimisation strategy in deep drawing process

2007 ◽  
Vol 1 (2) ◽  
pp. 226 ◽  
Author(s):  
Hossam H. Gharib ◽  
Abdalla S. Wifi ◽  
Maher Y.A. Younan ◽  
Ashraf O. Nassef
Keyword(s):  
Deep Drawing ◽  
Drawing Process ◽  
Blank Holder Force ◽  
Blank Holder ◽  
Deep Drawing Process

Study of the Parameters of Deep Drawing Process Based on the Simulation of Dynaform

2012 ◽  
Vol 249-250 ◽  
pp. 51-58
Author(s):  
Qing Wen Qu ◽  
Tian Ke Sun ◽  
Shao Qing Wang ◽  
Hong Juan Yu ◽  
Fang Li
Keyword(s):  
Friction Coefficient ◽  
Sheet Metal ◽  
Deep Drawing ◽  
Drawing Process ◽  
Blank Holder Force ◽  
Blank Holder ◽  
Deep Drawing Process ◽  
Drawing Die ◽  
Drawing Speed

A simulation of deep drawing process on the sheet metal was done by using Dynaform, the influence of blank holder force, deep drawing speed and friction coefficient on the forming speed of sheet metal in the deep drawing process were got. The forming speed of sheet metal determines the quality of deep drawing, in the deep drawing process the blank holder force and the deep drawing speed are controllable parameters, the friction coefficient can be intervened and controlled, and it’s a manifestation of the interaction of all parameters, the main factors which influence the friction coefficient just have blank holder force, deep drawing speed and lubrication except the material. The conclusion of this study provides the basic data for the analysis of the lubrication of mould, the study of lubricant and the prediction of the service life of deep drawing die.

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