This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Three-Dimensional Finite Element Analysis of Wrinkling in a Stamping Process
Technical Paper
2000-01-0777
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
SAE 2000 World Congress
Language:
English
Abstract
The three-dimensional finite element analysis was performed for the investigation of wrinkling that occurred in the stamping processes of tapered square cups and stepped rectangular cups in the present study. An interesting characteristic of these two types of wrinkling is that the wrinkles are found at the draw wall that is relatively unsupported. In the stamping process of a tapered square cup, the effect of process parameters, such as the die gap and blank-holder force, on the occurrence of wrinkling was analyzed using the finite element simulations. The simulation results show that the larger the die gap, the more serious is the wrinkling problem, and such a wrinkling cannot be suppressed by increasing the blank-holder force. In the analysis of wrinkling that occurred in the stamping process of a stepped rectangular cup, an actual production part that bears this type of geometry was examined. The wrinkles found at the draw wall are attributed to the unbalanced stretching of the sheet metal between the punch head and the step edge. An optimum die design for the purpose of eliminating the wrinkles was determined by the finite element analysis. The good agreement between the simulation results and those observed form the wrinkle-free production part validates the accuracy of the finite element analysis, and demonstrates the advantage of using the finite element analysis for the stamping die design.
Recommended Content
Authors
Citation
Chen, F. and Liao, Y., "Three-Dimensional Finite Element Analysis of Wrinkling in a Stamping Process," SAE Technical Paper 2000-01-0777, 2000, https://doi.org/10.4271/2000-01-0777.Also In
References
- Yoshida K. Hayashi H. Miyauchi K. Yamato Y. Abe K. Usuda M. Ishida R. Oike Y. “The effects of mechanical properties of sheet metals on the growth and removing of buckles due to non-uniform stretching.” Scient. Papers, Inst. Phys. Chem. Res. 68 85 93 1974
- Yu T.X. Johnson W. Stronge W.J. “Stamping and springback of circular plates deformed in hemispherical dies.” Int. J. Mech. Sci. 26 131 148 1984
- Stronge W.J. Sutcliffe M.P.F. Yu T.X. “Wrinkling of elasto-plastic circular plates during stamping.” Exp. Mech. 345 353 1986
- Narayanasamy R. Sowerby R. “Wrinkling of sheet metals when drawing through a conical die.” J. Mater. Proc. Tech. 41 275 290 1994
- Hosford W.F. Caddell R.M. Metal Forming: Mechanics and Metallurgy 2nd 1993