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期刊论文
Wrinkling Limit Based on FEM Virtual Experiment During NC Bending Process of Thin-walled Tube
Materials Science Forum Vols. *** (2004) pp. 498-502，-0001，（）：
A definition of forming limit is given with minimum centerline radius min R before wrinkling for NC bending process of thin-walled tube. Based on the developed FEM wrinkling prediction system TBWS-3D, an effective searching algorithm of wrinkling limit is proposed and forming limit can be obtained conveniently. Thus influence laws of main forming parameters on wrinkling limit are investigated and revealed. Measures to improve forming limit is put forward consequently. The achievements may help to both practice of thin-walled precise tube bending and research of plastic wrinkling.
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