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Volume 28 Issue 3
Aug.  2021
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Article Contents
SUN Gang, LI Mingzhe, CUI Xiangji, DENG Yushan. Influence of different technology modes on spring-back in multi-point forming[J]. Chinese Journal of Engineering, 2006, 28(3): 274-277. doi: 10.13374/j.issn1001-053x.2006.03.015
Citation: SUN Gang, LI Mingzhe, CUI Xiangji, DENG Yushan. Influence of different technology modes on spring-back in multi-point forming[J]. Chinese Journal of Engineering, 2006, 28(3): 274-277. doi: 10.13374/j.issn1001-053x.2006.03.015

Influence of different technology modes on spring-back in multi-point forming

doi: 10.13374/j.issn1001-053x.2006.03.015
  • Received Date: 2004-12-15
  • Rev Recd Date: 2005-03-22
  • Available Online: 2021-08-24
  • Finite element method was used to numerically simulate spring-back in multi-point forming (MPF). By contrasting two forming modes of multi-point die (MPD) and multi-point press (MPP), the influence of different forming modes on spring-back was analyzed. Firstly figuration was simulated by explicit method, and then implicit method was imported to calculate the spring-back of the spherical parts of 1 mm and 2 mm in thickness. The results indicate that when forming a figuration piece of 400 mm in curvature and 1 mm in thickness by the MPD forming mode of 10×10 array without hold blank, its spring-back value is 1.22 mm up to the most. But under the same condition, the spring-back value only is 0.24 mm by MPP. Namely the spring-back value of a metal sheet by MPP is 1/5 that by MPD. Moreover the spring back value is approximately 0 when forming a spherical part of 2 mm in thickness by MPP. It is concluded that MPP is better for MPF than MPD, and spring back value is sharply reduced.

     

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      沈陽化工大學材料科學與工程學院 沈陽 110142

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