Study of Effect of BHF on Springback-FEA Approach

Abstract

Sheet metal forming processes are widely used by automobile industry for forming of the components of vehicle body. When the sheet is formed by die punch setup and the punch is retracted, the formed components springback due to elastic stresses remaining in the bent up part. These elastic stresses try to relieve and in doing so there is a metal movement called springback. The desired size and shape is not obtained because of springback.

The springback is a complex phenomenon and is affected by many process and material parameters. In this paper the effect of processes parameters such as blank holder force and percentage thinning due to increase in BHF is investigated by using FEA.