Experimental and theoretical study of constant curvature multi-square punch forming process of strips under follower load

Zhu, Ling; Liang, Qiyu; Yu, Tao; Yuan, Ping; Hu, Yong

doi:10.1016/j.ijmecsci.2019.04.008

Cited by 6 publications

(1 citation statement)

References 19 publications

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“…Theoretical and analytical results were verified by experimental results in the article. An analytical model was presented to examine the springback of the sheet as in their conclusion [10]. Yong et al [11] investigated employing the MPF for creep age forming (CAF).…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigation on Effects of Pin Diameter on Multi-Point Forming

2023

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Multi-point forming (MPF) is an advanced and flexible method to form sheet metal workpieces. Although there are studies investigating different aspects of this method, the studies on the effects of pin diameter on sheet and pin contact on MPF are insufficient. In this study, pins with diameters of 10, 12, and 14 mm were used to investigate the damage factor, effective stress distribution, and required forming loads of three forms of aluminum 1100 parts in finite element simulations. In addition, experimental works were conducted for the 12 mm pin and the forming loads and the thinning on the contact points of pin and formed sheet metal parts were compared with the simulations. The 14 mm pin forming provided the highest effective stress distributions and the damage factors of 0.448, 0.770, and 0.329 were obtained for form1, form2, and form3, respectively. The percentage errors between experimental works and simulations using 12 mm pin forming were calculated as 7.4, 5.1, and 2.4% for all forms 1 to 3. In conclusion, pin diameter was shown to have significant effects on the MPF process. Larger diameter pins resulted in higher loads and tearing of sheet metal.

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Section: Introductionmentioning

confidence: 99%