Calculation of Springback and Its Variation in Channel Forming Operations 880526
An approximate plane strain analysis of the springback of sheet metal which has been bent under tension around a small radius is presented. The tensile load can be applied either before the bending takes place (called a “preload”) or after bending (“postload”). Some of the material and process parameters which govern springback are identified, and it is shown that postloads are always more effective than preloads in reducing spring-back. In principle, if all parameters are fixed, the springback would be constant from part to part and the required overbend could be determined. In practice, the material and process parameters have unavoidable variations. Using the springback model developed here, a Monte Carlo simulation is carried out to estimate the effects of these variations. It is found that the metal thickness has the greatest impact on springback variation.
Citation: Mickalich, M. and Wenner, M., "Calculation of Springback and Its Variation in Channel Forming Operations," SAE Technical Paper 880526, 1988, https://doi.org/10.4271/880526. Download Citation
Author(s):
Mary K. Mickalich, Michael L. Wenner
Affiliated:
Physics Dept., General Motors Research Laboratories, Mathematics Dept., General Motors Research Laboratories
Pages: 12
Event:
SAE International Congress and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Advances and Trends in Automotive Sheet Steel Stamping-P-206, SAE Transactions Journal of Materials-V97-2
Related Topics:
Tensile strength
Metals
Forming
Simulation and modeling
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