Formability Characteristics of Different Sheet Metals By Erichsen Cupping Testing With NDT Methods

2013 ◽  
Vol 1 (1) ◽  
pp. 15-20
Author(s):  
Animesh Talapatra ◽  
◽  
Vinit Ranjan Choudhary ◽  
Kapish Malhotra ◽  
Mukul Vyas ◽  
...  
Keyword(s):  
Sheet Metals

Anisotropy in thin Canning sheet metals

2003 ◽  
Vol 105 ◽  
pp. 19-29 ◽  
Author(s):  
D. W.A. Rees
Keyword(s):  
Sheet Metals

Laser assisted forming of sheet metals

2001 ◽  
Author(s):  
Dieter Schuöcker ◽  
Friedrich Kilian ◽  
Christian Zeinar ◽  
Alexander Kratky
Keyword(s):  
Sheet Metals

Stability of structured sheet metals during buckling

2019 ◽  
Vol 61 (10) ◽  
pp. 929-935
Author(s):  
Evgenia Ermilova ◽  
Fedor Kazak ◽  
Sabine Weiß
Keyword(s):  
Sheet Metals

Anisotropy in Thin, Canning Sheet Metals

2002 ◽  
Vol 5 (2-3-4) ◽  
pp. 433-443
Author(s):  
David WA Rees ◽  
Mohamed Djouadi
Keyword(s):  
Sheet Metals

Multi-point die electromagnetic incremental forming for large-sized sheet metals

2021 ◽  
Vol 62 ◽  
pp. 458-470
Author(s):  
Fei Feng ◽  
Jianjun Li ◽  
Rongchuang Chen ◽  
Liang Huang ◽  
Hongliang Su ◽  
...  
Keyword(s):  
Incremental Forming ◽  
Sheet Metals

Production of Tapered Cups by Sequential Deep Drawing of Sheet Metals Using Drawn Cups as a Part of Punch

1993 ◽  
Vol 115 (2) ◽  
pp. 224-229 ◽  
Author(s):  
K. Yamaguchi ◽  
K. Kanayama ◽  
M. H. Parsa ◽  
N. Takakura
Keyword(s):  
Deep Drawing ◽  
Drawing Ratio ◽  
Drawing Process ◽  
Sheet Metals ◽  
Deep Drawing Process ◽  
Drawing Method

A new deep drawing process of sheet metals is developed to facilitate small-lot production of deep cups with large drawing ratio. In this process, unlike the conventional deep drawing method, a few drawn cups are always stacked on the punch and used as a part of punch for the subsequent deep drawing of a given blank. Before drawing a new blank, a drawn cup which is in contact with the punch is stripped off. The repetition of such stripping and drawing operations makes it possible to carry out both the first-stage drawing and the subsequent slight redrawings in one drawing operation using only one pair of punch and die. In this paper, this new deep drawing process is applied to the production of tapered cups and the main feature of the process is shown.

scholarly journals Study of Influence of Width to Thickness Ratio in Sheet Metals on Bendability under Ambient and Superimposed Hydrostatic Pressure

2021 ◽  
Vol 2 (3) ◽  
pp. 542-558
Author(s):  
Mohammadmehdi Shahzamanian ◽  
David Lloyd ◽  
Amir Partovi ◽  
Peidong Wu
Keyword(s):  
Hydrostatic Pressure ◽  
Stress Ratio ◽  
Fracture Strain ◽  
Stress Triaxiality ◽  
Volumetric Strain ◽  
Thickness Ratio ◽  
Sheet Metals ◽  
The Finite Element Method ◽  
Bending Strain ◽  
Good Agreement

The effect of the width to thickness ratio on the bendability of sheet metal is investigated using the finite element method (FEM) employing the Gurson–Tvergaard–Needleman (GTN) model. Strain path changes in the sheet with change in the width/thickness ratio. It is shown that bendability and fracture strain increase significantly by decrease in the width/thickness ratio. The stress state is almost uniaxial when the stress ratio (α) is close to zero for narrow sheets. Stress ratio is nothing but the major stress to minor stress ratio. This delays the growth and coalescence of micro-voids as the volumetric strain and stress triaxiality (pressure/effective stress) decrease. On the other hand, ductility decreases with increase in α for wider sheets. Fracture bending strain is calculated and, as expected, it increases with decrease in the width/thickness ratio. Furthermore, a brief study is performed to understand the effect of superimposed hydrostatic pressure on fracture strain for various sheet metals with different width/thickness ratios. It is found that the superimposed hydrostatic pressure increases the ductility, and that the effect of the width/thickness ratio in metals on ductility is as significant as the effect of superimposed hydrostatic pressure. Numerical results are found to be in good agreement with experimental observations.

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