Experimental and numerical analysis of out-of-plane formability test

Out-of-plane (dome) formability test is used extensively to determine forming limit diagrams (FLDs) of sheet metals. Strain paths are generated to form the FLD using this test. In this research, a comparative study was performed between measured and predicted strain paths. Numerical predictions are well suited with the experimental results. The strain paths from finite element simulations are found fairly acceptable to represent both sides of the FLD. The effects of mesh size and lubrication conditions on the forming limit diagram were also investigated.