Aspects of flow stress modelling for numerical simulation of cyclic bulk forming processes

作者：Meinel S^*; Kreissig R; Ansorge H

来源：Forschung im Ingenieurwesen, 2007, 71(1): 9-20.

DOI：10.1007/s10010-006-0040-6

Incremental bulk forming is characterized by a localized, very intensive loading of the material. To get reliable results of numerical simulation it is necessary to describe thermo-mechanical response of the material close to reality for the full load range. The validity of empirical flow stress models is limited to small load intervals. Furthermore, experimental results often are missing. Considering spin extrusion, it is shown, how to cover a wide range of thermo-mechanical parameters using a combined flow stress model. Also the sensibility of simulation results with respect to flow stress modelling is discussed.

• 出版日期2007-3