Essential algorithms to minimize dynamic effects in using explicit codes for stamping process simulations

A key problem, when using dynamic codes to run the static or quasi-static jobs, in particular, for a stamping process simulation attaching spring-back calculation, is the dynamic e ect. In order to minimize the dynamic e ects, some kinds of loading algorithms should be performed. The enhancement of these is proposed in this paper, as well as making up for a de ciency that current damping models have when used to reduce the dynamic e ects. Essential conditions that can be followed to generate an ideal loading curve are brought forward here including the starting and ending condition. A concerned model is recommended that satis es all ideal requirements, which can be used directly for the stamping process simulation. Associated criteria and how to optimize the loading curves are also presented. Finally, a simple case has been done to describe its practical application in simulations. Meanwhile, several kinds of loading curves, which have been used commonly in the stamping process simulation, are selected to compare with the proposed loading curve. The di erent features of them are also discussed