Tool deformation during the shape rolling of stator vanes
Tool deformation is an important issue in the shape rolling of stator vanes as it directly 
influences the thickness of the rolled vane. This means that for the design of an accurate production process 
the deformation of the tools has to be accounted for. The shape rolling of symmetrical straight vanes has been 
investigated. This rolling process is considered stationary, because these vanes have a constant cross-section 
over the length. Therefore an ALE formulation is suitable to calculate the steady state. The deformation of 
the sheet as well as the deformation of the tools have been calculated with the developed finite element model. 
Some results of these simulations are presented in this paper
Analysis of guillotining and slitting, finite element simulations
Guillotining and slitting are two sheet metal cutting processes, which produce long straight cuts and can be seen as stationary processes. The analysis of these two processes is the subject of this thesis. This research project is part of a cluster of IOP projects on sheet metal cutting, originating from industrial requests for more fundamental knowledge, as sheet metal cutting is still mainly based on experience and trial and error. The objective is to develop models of guillotining and slitting to increase the insight and to contribute to the quality and productivity of these shearing processes.
Theoretical investigation of optimum clearance in blanking
Abstract In this work a method is described to investigate theoretically the optimum punch-die clearance in the blanking operation for given parameters, using the finite-element technique. The effect of the ductility on the value of the optimum clearance and of the optimum penetration is established. The results obtained through the finite-element analysis are compared with available theoretical and experimental results. It is found that the results of the present work are in close agreement with the results of experiment and the trends match well with the results of the theoretical work.