The Effects of Tooling Imperfections on the Initiation of Wrinkling in Finite Element Modeling of a Deep Drawing Process

2000 ◽  
Author(s):  
J. Hematian ◽  
P. M. Wild
Keyword(s):  
Finite Element ◽  
Deep Drawing ◽  
Thin Sheet ◽  
Large Body ◽  
Thick Sheet ◽  
Drawing Process ◽  
Review Of The Literature ◽  
Deep Drawing Process ◽  
Punch Displacement ◽  
Simulation Results

Abstract A brief review of the literature on wrinkling in deep drawing processes is presented. It is noted that, while there is a large body of literature related to thin sheet, only one study related to thick sheet or plate has been identified. Finite element based models are used to investigate the effect of initial tooling imperfections on the initiation of wrinkling in deep drawing of thick sheet. Two sorts of tooling imperfections, punch displacement and blank tilting, are considered. The simulation results are compared qualitatively to the experimental forming operation. It is confirmed that tooling imperfections, in particular blank tilting, are an important type of imperfection governing the wrinkling behavior of the blank in deep drawing process.

The Effects of Tooling Imperfections on the Initiation of Wrinkling in Finite Element Modeling of a Deep Drawing Process

2000 ◽  
Vol 123 (4) ◽  
pp. 442-446 ◽  
Author(s):  
J. Hematian ◽  
P. M. Wild
Keyword(s):  
Finite Element ◽  
Deep Drawing ◽  
Thin Sheet ◽  
Large Body ◽  
Thick Sheet ◽  
Drawing Process ◽  
Review Of The Literature ◽  
Deep Drawing Process ◽  
Punch Displacement ◽  
Simulation Results

A brief review of the literature on wrinkling in deep drawing processes is presented. It is noted that, while there is a large body of literature related to thin sheet, only one study related to thick sheet or plate has been identified. Finite element based models are used to investigate the effect of initial tooling imperfections on the initiation of wrinkling in deep drawing of thick sheet. Two sorts of tooling imperfections, punch displacement and blank tilting, are considered. The simulation results are compared qualitatively to the experimental forming operation. It is confirmed that tooling imperfections, in particular blank tilting, are an important type of imperfection governing the wrinkling behavior of the blank in deep drawing process.

Investigating the Effects of the Friction Coefficient and Tool Geometry on the Cup Thickness in the Deep Drawing Process of SPXI250 Alloy

2013 ◽  
Author(s):  
Iman Rostamsowlat ◽  
Ahmad Afsari ◽  
Maziar Janghorban
Keyword(s):  
Finite Element ◽  
Friction Coefficient ◽  
Deep Drawing ◽  
The Other ◽  
Tool Geometry ◽  
Drawing Process ◽  
Nose Radius ◽  
Deep Drawing Process ◽  
Simulation Results ◽  
Thickness Variations

In this paper, effects of friction coefficient and tool geometry on the thickness variations of a cylindrical cup were studied. Blank is made of SPXI250 alloy sheet which was analyzed by Finite Element Method (FEM). This not been studied yet. Finite Element modeling of the deep drawing process was conducted using ABAQUS/EXPLICIT software. A set of appropriate die and punch were designed for experimental tests. The results of the simulation showed that a change in the friction coefficient of the die-blank interface leads to a significant changes in the cup thickness. Moreover, the results revealed that the influence of die nose radius on the final cup thickness variations is greater than that of the punch nose radius. The simulation results of this study were compared with the experimental results and those of the other investigators’. The comparisons of the experimental and simulation results with those of the other researchers were so satisfactory.

A study of vibro-acoustic behaviour variation of thin sheet metal components manufactured through deep drawing process

2019 ◽  
Vol 153 ◽  
pp. 110-126
Author(s):  
Vamsi Krishna Balla ◽  
Laurens Coox ◽  
Elke Deckers ◽  
Francesco Greco ◽  
Bert Pluymers ◽  
...  
Keyword(s):  
Sheet Metal ◽  
Deep Drawing ◽  
Thin Sheet ◽  
Drawing Process ◽  
Deep Drawing Process ◽  
Acoustic Behaviour ◽  
Thin Sheet Metal

FEM Simulation of Anisotropic Parameters Influencing the Earing in Sheet Metal Deep Drawing Process

2011 ◽  
Vol 88-89 ◽  
pp. 638-641 ◽  
Author(s):  
Lei Chen
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Sheet Metal ◽  
Deep Drawing ◽  
Fem Simulation ◽  
Element Model ◽  
Drawing Process ◽  
Deep Drawing Process ◽  
Material Characteristics

Earing is often undesirable in the production of deep drawn containers because it results in a nonuniform cup height. A finite element model for earring analysis is developed considering only the flange area of the sheet. It was found that the draw-in depth of the flange increases with the increase of the r value, and it remains invariable when r value is larger than 2. With the increase of the r value, the max thickness decreases and the min thickness increases. If △r>0, four earings are formed. If △r =0, the material characteristics in all the planar directions are same. The flange uniformly flows into the die cavity, no earing is formed. If △r<0, four earings are formed. The earing distribution is dominated by r0, r45 and r90. Both r and △r have much effect on the earing distribution.

The improvement in deep drawing process for producing air filter by using finite element method

2013 ◽  
Vol 40 (1) ◽  
pp. 125-130
Author(s):  
Trinet Yingsamphancharoen ◽  
Nakarin Srisuwan ◽  
Chira Densangarun
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Deep Drawing ◽  
Drawing Process ◽  
Air Filter ◽  
Deep Drawing Process ◽  
Element Method
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