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Size Effects in Deep Drawing
Modeling of Tribological Size Effects in Deep Drawing (Vo 530/6-3)
The deep drawing process provides a high application potential for the manufacturing of parts with different micro dimensions. Until now there is no foundation, with which the knowledge of deep drawing can be applied on the manufacturing of parts in micro dimensions. There is a special meaning by the friction. The aim of this project is to find a friction function taking into account size effects. Through such a friction function the frictional behaviour during the deep drawing can be described, even when the dimension of the parts is changed, the effect of such dimensions changing on the friction behaviour should also be discovered through such a friction function. In this investigation the relevant tribological parameter for different tool geometries in different dimensions will be investigated as well as the effect of the surface change resulting from the process on the friction in a part-tool system will be analysed. In order to realize a size related friction function the developed model will be integrated in the FEM-simulation. Within this project experimental investigation with a high dynamic press will be carried out as the fundament for the numerical identification, whereby an algorithm of optimisation will be used.
Funded by
DFG
Timeframe
2007/02/01 - 2008/10/31
Department Manager
Dipl.-Phys. Haiko von Rebenstock
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