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Essential algorithms to minimize dynamic effects in using explicit codes for stamping process simulations
Author(s) -
Hu Weilong
Publication year - 2003
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.633
Subject(s) - stamping , ideal (ethics) , process (computing) , dynamic simulation , algorithm , computer science , key (lock) , engineering , simulation , mechanical engineering , philosophy , computer security , epistemology , operating system
Abstract 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 effect. In order to minimize the dynamic effects, some kinds of loading algorithms should be performed. The enhancement of these is proposed in this paper, as well as making up for a deficiency that current damping models have when used to reduce the dynamic effects. 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 satisfies 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 different features of them are also discussed. Copyright © 2003 John Wiley & Sons, Ltd.