The FEM numerical computation typology for drawing processes depends on the desired analysis and belongs to one of the following approaches:
One-Step Simulation
Provides the preliminary feasibility analysis using simplifying assumptions such as accepting a linear behaviour of deformation, ignoring contact and friction problems, etc.
Starts from the final deformed metal sheet configuration till the initial plane blank, in very short time, with only one step
Incremental Simulation
All the process components must be taken into account (kinematic characteristics, the blankholder, etc)
Used to simulate the complete drawing process, providing accurate results
Requires high hardware resources and calculation time