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

Abstract:

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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.

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Periodical:

Edited by:

Xingui He, Ertian Hua, Yun Lin and Xiaozhu Liu

Pages:

638-641

DOI:

10.4028/www.scientific.net/AMM.88-89.638

Citation:

L. Chen "FEM Simulation of Anisotropic Parameters Influencing the Earing in Sheet Metal Deep Drawing Process", Applied Mechanics and Materials, Vols. 88-89, pp. 638-641, 2011

Online since:

August 2011

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$35.00

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