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Abstracat: Drawbeads are often applied to improve the control of the
material flow during the deep-drawing operation. An equivalent drawbead
approach is usually used by weighing the efficiency and precision of the
numerical simulation of sheet metal forming. An equivalent drawbead
model is developed. A contact-searching algorithm for a sheet and a
drawbead line is put forward firstly, and then the implementations of
the drawbead restraining force and the plastic thickness strain on the
nodes of the sheet are elaborated, respectively. For verification
purposes, the deep drawing of a square bo simulated with self-developed
software SheetForm.
Key words: Sheet metal forming Numerical simulation
Equivalent drawbead model
CLC No: TG335.5
国家863高技术研究发展计划资助项目(863-511-820-020).
Received 20040326, received in revised form 20040829
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