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Influence of the deformation sequence on the shape accuracy of multi-point forming

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Abstract

Multi-point forming with individually controlled force–displacement (MPF-ICFD) is a novel multi-point forming process with characteristics of good deformation uniformity and high forming accuracy. The process has two different deformation sequences: positive forming (PF) and negative forming (NF). The shape accuracy of a part is significantly different when the deformation order is changed. To reveal the influence mechanism of the deformation sequence on shape accuracy, experiments and numerical simulations are used to assess shape accuracy during multi-point forming. The deformation behaviours of a cylindrical surface, sail surface and saddle surface in PF and NF processes are investigated to obtain the shape accuracy characteristics of a sheet under different deformation sequences. In addition, the strain distribution characteristics of the cylindrical surface are given quantitatively. The influence mechanism of the deformation sequence on the shape accuracy is revealed. The results show that the amount of plastic deformation on the part is significantly increased and the shape accuracy is significantly improved during the PF process. When the loading conditions are identical, the maximum strain of the cylindrical parts is increased by 73.4%, and the amount of springback is decreased by 90.0%. The above research indicates that the PF process has good application prospects in sheet metal forming.

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Funding

This work was supported by the Shandong Provincial Natural Science Foundation (No. ZR2020ME145) and the 333 High-level Talent Training Project of Jiangsu province (third level, 2022).

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Authors and Affiliations

  1. School of Materials Science and Engineering, Harbin Institute of Technology, Weihai, 264209, People’s Republic of China

    Bin-Bin Jia

  2. School of Naval Architecture and Ocean Engineering, Jiangsu Maritime Institute, Nanjing, 211170, People’s Republic of China

    Bin-Bin Jia, Yan Shen & Yanxia Gu

  3. School of Material Science and Engineering, Southeast University, Nanjing, 211189, People’s Republic of China

    Yan Shen

Authors
  1. Bin-Bin Jia
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  2. Yan Shen
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Contributions

Conceptualization, Methodology, Funding Acquisition, Writing-Original Draft, Experiment, Bin-bin Jia.; Conceptualization, Methodology, Experiment, Writing-Review & Editing, Funding Acquisition, Yan Shen.; Software, Experiment, Data Curation, Yanxia Gu. All authors have read and agreed to the published version of the manuscript.

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Correspondence to Yan Shen.

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Jia, BB., Shen, Y. & Gu, Y. Influence of the deformation sequence on the shape accuracy of multi-point forming. Int J Mater Form 16, 66 (2023). https://doi.org/10.1007/s12289-023-01790-z

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