Accurate deep drawing simulation by combining analytical approaches

The basic contribution of this work is the description of the development of an analytical simulation method for deep drawing processes. By considering multiple deformation steps, this method takes time dependent process parameters and non-linear deformation paths into account. Contrary to existing analytical approaches, this method allows an accurate strain prediction and, thus, a prediction of formability. Compared to numerical onestep solvers, the developed method is much faster, and due to a better consideration of deformation paths, also a higher accuracy is reached in simulating axisymmetric and prismatic parts. Due to its efficient combination of computation speed and accuracy, this method allows an application in fast process optimizations or online process control systems, where existing approaches are either too slow in case of numerical simulation or too inaccurate in case of analytical simulation.