Anisotropic Sheet Forming Simulations Based on the ALAMEL Model: Application on Cup Deep Drawing and Ironing

2011 ◽  
Author(s):  
P. Eyckens ◽  
J. Gawad ◽  
Q. Xie ◽  
A. Van Bael ◽  
D. Roose ◽  
...  
Keyword(s):  
Deep Drawing ◽  
Sheet Forming ◽  
Model Application ◽  
Forming Simulations

scholarly journals Sheet Forming Simulations of Automotive Parts using Different Yield Functions

2010 ◽  
Author(s):  
Jin-Woo Lee ◽  
Frédéric Barlat ◽  
Dong-Jin Kim ◽  
F. Barlat ◽  
Y. H. Moon ◽  
...  
Keyword(s):  
Sheet Forming ◽  
Yield Functions ◽  
Automotive Parts ◽  
Forming Simulations

A New Forming Strategy to Realise Parts Designed for Deep-drawing by Incremental CNC Sheet Forming

2005 ◽  
Vol 76 (2-3) ◽  
pp. 160-166 ◽  
Author(s):  
Gerhard Hirt ◽  
Jochen Ames ◽  
Markus Bambach
Keyword(s):  
Deep Drawing ◽  
Sheet Forming ◽  
Forming Strategy

A model for the distortion of the plane stress yield surface in sheet forming simulations

2021 ◽  
pp. 301-308
Author(s):  
M. Jamal ◽  
P. Gilormini ◽  
N. Dahan ◽  
P. Rougée
Keyword(s):  
Plane Stress ◽  
Yield Surface ◽  
Sheet Forming ◽  
Forming Simulations

Experimental Study of the Small Lubrication Holes on the Die Shoulder on the Formability in Cylindrical Cup Deep-Drawing

2010 ◽  
Vol 37-38 ◽  
pp. 428-431
Author(s):  
Yu Qing Shi
Keyword(s):  
Deep Drawing ◽  
Mechanical Characteristics ◽  
Experimental Methods ◽  
Sheet Forming ◽  
Drawing Process ◽  
Forming Process ◽  
Deep Drawing Process ◽  
Forming Quality ◽  
Forming Technology ◽  
Cylindrical Cup

Wrinkling and tearing are major defects that usually occur in the deep-drawing process. This study presents a new sheet forming technology, together with machining small lubrication holes on the die shoulder. Deep drawing process of cylindrical cups with flange is investigated. Mechanical characteristics of die shoulder with small lubrication holes in deep drawing are analyzed. Numerical simulation and experimental methods are used to determine the influence on formability of machining small lubrication holes on the die shoulder. The results show that this new sheet forming process can improve formability and forming quality.

Do Advanced Material Models Contribute to Accuracy in Industrial Sheet Forming Simulations?

2005 ◽  
Vol 6-8 ◽  
pp. 71-80 ◽  
Author(s):  
A.H. van den Boogaard ◽  
H. H. Wisselink ◽  
J. Huétink
Keyword(s):  
Strain Rate ◽  
Large Scale ◽  
Large Strain ◽  
Material Model ◽  
Yield Function ◽  
Sheet Forming ◽  
Material Models ◽  
Discretisation Error ◽  
Forming Simulations ◽  
Global Deformation

The accuracy of material models can have a large impact on the overall accuracy of material forming simulations in general and sheet forming simulations in particular. For large strain plastic deformations, the material model usually consists of a yield function and a hardening relation, optionally including the influence of temperature and strain rate. In large-scale simulations it is favourable to keep the model as simple as possible. The ‘allowable’ error in a material model should be in balance with other errors, like the discretisation error and errors in contact and friction modelling. The required accuracy depends on the application and the goal of the analysis. In many occasions, strain rate and temperature dependency can be ignored, but for warm forming this is clearly not the case. Furthermore, numerical simulation of the onset of necking requires a much better material model than needed for the calculation of the global deformation field before necking.

Ductile Failure Modelling in AA5182 Aluminium Alloy Sheet Forming

2013 ◽  
Vol 554-557 ◽  
pp. 47-62
Author(s):  
Holger Aretz ◽  
Stefan Keller ◽  
Olaf Engler ◽  
Henk Jan Brinkman
Keyword(s):  
Aluminium Alloy ◽  
Deep Drawing ◽  
Ductile Failure ◽  
Sheet Forming ◽  
Alloy Sheet ◽  
Failure Model ◽  
R Value ◽  
Experimental Findings

A modular ductile failure model is presented and applied to the forming of an AA5182 aluminium alloy sheet. A detailed description of the failure model and its calibration is provided. The final application of the calibrated failure model to the deep drawing of a cruciform cup reveals a good correlation with the experimental findings. Finally, a study on the influence of the r-value on formability is conducted.

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