Anisotropic hardening – numerical application of a cubic yield theory and consideration of variable r-values for sheet metal

2001 ◽  
Vol 20 (4) ◽  
pp. 585-599 ◽  
Author(s):  
Gerald Grewolls ◽  
Reiner Kreißig
2022 ◽  
Vol 171 ◽  
pp. 108791
Author(s):  
Zhenkai Mu ◽  
Jun Zhao ◽  
Qingdang Meng ◽  
Honglei Sun ◽  
Gaochao Yu

2013 ◽  
Vol 75 ◽  
pp. 244-256 ◽  
Author(s):  
Ji He ◽  
Z. Cedric Xia ◽  
Xinhai Zhu ◽  
Danielle Zeng ◽  
Shuhui Li

Author(s):  
Е. А. Фролов ◽  
В. В. Агарков ◽  
С. И. Кравченко ◽  
С. Г. Ясько

To determine the accuracy of the readjustable punches for separating operations (perforation + punching out) of sheet-metal forming, the accuracy parameters were analyzed using the random balance method using the method of experiment planning. Analytical dependencies are obtained to determine the values of deviation of the outer and inner contour dimensions of perforated and punched out sheet parts. From the dependencies obtained, it is possible to estimate and predict the value of deviation in the dimensions of the resulting part at any time during the operation of the punch. Practical recommendations on the calculation of the actuating dimensions of the working elements (stamping punch, matrix) of readjustable punches are offered.


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