Forming limit predictions for single-point incremental sheet metal forming

被引：0

作者：

Van Bael, A. ^{[1
]}

Eyckens, P. ^{[1
]}

He, S. ^{[1
]}

Bouffioux, C. ^{[1
]}

Henrard, C. ^{[1
]}

Habraken, A. M. ^{[1
]}

Duflou, J. ^{[1
]}

Van Houtte, P. ^{[1
]}

机构：

[1] Katholieke Univ Leuven, Dept MTM, B-3001 Heverlee, Belgium

来源：

10TH ESAFORM CONFERENCE ON MATERIAL FORMING, PTS A AND B | 2007年 / 907卷

关键词：

formability; Marcimak-Kuczynski model; finite-element simulations;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A characteristic of incremental sheet metal forming is that much higher deformations can be achieved than conventional forming limits. In this paper it is investigated to which extent the highly non-monotonic strain paths during such a process may be responsible for this high formability. A Marciniak-Kuczynski (MK) model is used to predict the onset of necking of a sheet subjected to the strain paths obtained by finite-element simulations. The predicted forming limits are considerably higher than for monotonic loading, but still lower than the experimental ones. This discrepancy is attributed to the strain gradient over the sheet thickness, which is not taken into account in the currently used MK model.

引用

页码：309 / 314

页数：6

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