TY - JOUR
T1 - Deformation mechanics and failure mode in stretch and shrink flanging by double-sided incremental forming
AU - Zhang, Huan
AU - Zhang, Zixuan
AU - Ren, Huaqing
AU - Cao, Jian
AU - Chen, Jun
N1 - Funding Information:
The authors are grateful for the financial support from the National Natural Science Foundation of China through grant U1737210 . This research was supported in part by the Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy administered by the Oak Ridge Institute for Science and Education (ORISE) for the DOE. ORISE is managed by Oak Ridge Associated Universities (ORAU) under DOE contract number DE-SC0014664 .
PY - 2018/8
Y1 - 2018/8
N2 - 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.
AB - 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.
KW - Deformation mechanics
KW - Double-sided incremental forming
KW - Failure mode
KW - Incremental flanging
KW - Numerical simulation
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U2 - 10.1016/j.ijmecsci.2018.06.002
DO - 10.1016/j.ijmecsci.2018.06.002
M3 - Article
AN - SCOPUS:85048585293
VL - 144
SP - 216
EP - 222
JO - International Journal of Mechanical Sciences
JF - International Journal of Mechanical Sciences
SN - 0020-7403
ER -