Influences of material thickness on hole-flange forming limitation
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Publication Details
Author list: Thipprakmas S., Phanitwong W.
Publisher: Trans Tech Publications
Publication year: 2011
Volume number: 189-193
Start page: 2691
End page: 2694
Number of pages: 4
ISBN: 9783037850312
ISSN: 1022-6680
eISSN: 1662-8985
Languages: English-Great Britain (EN-GB)
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Abstract
In recent years, the hole-flanged components are not only fabricated for a thin sheet metal but they are also increasingly manufactured for a thick sheet metal especially in the automotive industry. However, most of the past researches have been studied the hole-flanging of thin sheet metal. In this study, the influences of material thickness were investigated using the finite element method (FEM) and laboratory experiments. Based on the stress distribution analysis, as the material thickness increased and the hole-flange forming ratio decreased, the effects of bending feature and the material stretching increased which resulted in the easy crack formation. The relationship between material thickness and hole-flange forming limitation was also investigated. In addition, the poor flatness on flange edge increased as the material thickness increased. The FEM simulation results showed the good agreement with the experimental results. ฉ (2011) Trans Tech Publications.
Keywords
Forming limitation, Hole flange, Material thickness
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