Calculation of Springback and Its Variation in Channel Forming Operations Physics Dept., General Motors Research Laboratories

Format:

Conference/Event

Author/Creator:

Mickalich, Mary K., author.

Conference Name:

SAE International Congress & Exposition (1988-02-29 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1988

Summary:

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

Notes:

Vendor supplied data

Publisher Number:

880526

Access Restriction:

Restricted for use by site license