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TECHNICAL PAPERS

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

[+] Author and Article Information
J. Hematian, P. M. Wild

Department of Mechanical Engineering, Queen’s University, Kingston, Ontario

J. Eng. Mater. Technol 123(4), 442-446 (Jul 24, 2000) (5 pages) doi:10.1115/1.1396351 History: Received July 24, 2000
Copyright © 2001 by ASME
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References

Yu,  T. X., Johnson,  W., and Stronge,  W. J., 1984, “Stamping and springback of circular plates deformed in hemispherical dies,” Int. J. Mech. Sci., 26, pp. 131–148.
Wang,  C. T., Kinzel,  G., and Altan,  T., 1995, “Failure and Wrinkling criteria and mathematical modeling of shrink and stretch flanging operations in sheet-metal forming,” J. Mater. Process. Technol., 53, pp. 759–78.
Neale,  K. W., and Tugcu,  P., 1990, “A Numerical analysis of wrinkling formation tendencies in sheet metals,” Int. J. Numer. Methods Eng., 30, pp. 1595–1608.
Yu,  T. X., and Zhang,  L. C., 1986, “The elastic wrinkling of an annular plate under uniform tension on its edge,” Int. J. Mech. Sci., 28, pp. 729–737.
Ameziane-Hassani,  H., and Neale,  K. W., 1991, “On the analysis of metal wrinkling,” Int. J. Mech. Sci., 33, pp. 13–30.
Ni, C. M., and Jhita, R., 1990, “A numerical technique for predicting wrinkling in practical sheet metal forming processes,” Computer Modeling and simulation and modeling of manufacturing processes, ASME Materials Division, Vol. 20, pp. 139–153.
Cao,  J., and Boyce,  M. C., 1997, “Wrinkling behavior of rectangular plates under lateral constraint,” Int. J. Solids Struct., 34, pp. 153–176.
Hematian,  J., and Wild,  P. M., 2000, “Initial Imperfections and the Initiation of Wrinkling in Finite Element Modeling of Deep Drawing,” I. Mech E., Journal of Process Mechanical Engineering, 214, pp. 63–73.
Stronge, W. J., Sutcliffe, M. P. F., and Yu, T. X., 1986, “Wrinkling of elastoplastic circular plates during stamping,” Experimental Mechanics, pp. 345–353.
Tomita,  Y., and Shindo,  A., 1988, “Onset and growth of wrinkles in thin square plates subjected to diagonal tension,” Int. J. Mech. Sci., 30, pp. 921–931.

Figures

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(a) Single-step deep drawing with a blank holder; (b) first “dishing” step in multi-step deep drawing; (c) subsequent forming steps with radiused dies
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Wrinkling pattern of 1/4 inch plates formed by using a conical die and a semi ellipsoidal punch (Hematian and Wild 8)
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(a) Finite element mesh #1; (b) finite element mesh #2
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Displacement and rotation axes
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Wrinkling patterns for the perfect model
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Wrinkling patterns for the displaced-punch model
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Wrinkling patterns for the tilted-blank model
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The effect of angle of blank tilt on the initiation and growth of wrinkles
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Wrinkling patterns with X-displaced-punch and tilted-blank
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Wrinkling patterns with Y-displaced-punch and tilted-blank
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Wrinkling height at various punch stroke for tool setting imperfection models

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