Abstract
Abstract
In the automotive industry there are several software for numerical simulations to predict the behaviour of the material, which can reduce the expensive try-out experiments and dies cost. These software uses different mesh types. The goal of this work is to compare the different mesh element types in sheet metal forming simulations from the viewpoint of excess thinning. The benchmark of the 2018 NUMISHEET conference was the base of this comparison. This benchmark investigates the formability of a 2.8 mm thick, hot rolled sheet with 440 MPa tensile strength. The FE modelling of the process was made with thin shell-, thick shell-, and brick element types, thereafter; it was validated by the minimum thickness of the part based on physical data measurement. To better identify the differences due to the mesh elements, the thickness distribution of the part was investigated, too.