Experimental and simulated comparison of finite element models of bimetallic sheets for deep drawing process

In this study, different techniques used for modelling of bimetallic sheets by finite element (FE) method have been compared. Sheets modelled with five different assumptions were compared with each other and experimental data to determine the FE model that gives the most realistic result. FE models were created with the assumption that the adhesion was excellent or separable and with the case that the solidified adhesive in the intermediate layer was modelled and not modelled. As a result, the closest values to the experimental results were obtained with the model created with the assumption that there is a solidified adhesive layer in the middle layer and there is an adhesion interface between this layer and metallic layers. On the other hand, when the adhesive is not modelled in the middle layer, it has been observed that the solution time is reduced by 2.6 times while small changes are seen in the results.