Effects of draw-bending characteristics on concave wall feature in rectangular deep-drawn parts

Conference proceedings article

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Publication Details

Author list: Phanitwong W., Thipprakmas S.

Publisher: Trans Tech Publications

Publication year: 2013

Volume number: 549

Start page: 92

End page: 99

Number of pages: 8

ISBN: 9783037856710

ISSN: 1013-9826

eISSN: 1662-9795

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84877843090&doi=10.4028%2fwww.scientific.net%2fKEM.549.92&partnerID=40&md5=b24d74b571fb1fb179c647ae1211372d

Languages: English-Great Britain (EN-GB)

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Abstract

In recent years, the requirements on the complicated deep-drawn parts with the high dimension precision are increasingly. As the major defect, the concave wall feature which commonly encounter in the complicated deep-drawn parts of the difficult-to-deep draw material is focused. In this research, the effects of draw-bending characteristics on concave wall feature during deep-drawing process are clearly identified. The mechanism of concave wall feature related to the draw-bending characteristic was investigated and clearly identified by using the finite element method (FEM) and the experiments were also performed to validate the FEM-simulation results. On the basis of stress distribution, the effects of draw-bending characteristics on the concave wall feature could be clearly identified via the changes of stress distributions on the wall, convex feature and spring-go feature on the bottom surface, and spring-back feature on the top surface. However, comparing with U-draw bending model, the effects of draw-bending characteristics was decreased and the concave wall feature in the case of deep-drawing model was smaller than that in the case of U-draw bending model. The experiments were carried out in both cases of the deep-drawing and U-draw bending models to validate the FEM-simulation results. The FEM-simulation results showed a good agreement with the experimental results with reference to the distribution of material thickness. ฉ (2013) Trans Tech Publications.

Keywords

Concave, Deep-drawing, Draw-bending