Deformation mechanics and failure mode in stretch and shrink flanging by double-sided incremental forming
| Autor: | Zixuan Zhang, Jun Chen, Huaqing Ren, Huan Zhang, Jian Cao |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0209 industrial biotechnology
Materials science Flanging Computer simulation Tension (physics) business.industry Mechanical Engineering 02 engineering and technology Structural engineering Condensed Matter Physics 020303 mechanical engineering & transports 020901 industrial engineering & automation 0203 mechanical engineering Mechanics of Materials visual_art visual_art.visual_art_medium Formability General Materials Science business Sheet metal Failure mode and effects analysis Civil and Structural Engineering |
| Zdroj: | International Journal of Mechanical Sciences. 144:216-222 |
| ISSN: | 0020-7403 |
| Popis: | Incremental sheet metal flanging is efficient and cost-effective in prototyping and low-volume production. However, how the sheet metal fails and how the overall formability is enhanced during incremental sheet flanging are still not well understood. This study attempts to provide an updated level of understanding for the deformation mechanics in fabricating a clover hole-flange with complex in-plane curvatures by double-sided incremental forming. Compared with traditional flanging methods, higher formability has been achieved for both stretch flanging and shrink flanging on a single part. Additionally, numerical simulation is conducted complementarily to reveal the strain evolution, based on which failure modes and reasons are analyzed. Moreover, DMV (Donell–Mushtari–Vlasov) equations are employed to analytically study the shrink flanging process. The investigations lead to the conclusions that meridional tension has positive effect in improving the formability during shrink flanging, while an adverse effect is found in the formability during stretch flanging. |
| Databáze: | OpenAIRE |
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