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Analysis and optimization of the stamping process with pretreated 7A09 aluminum alloy

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Abstract

Process parameters have a great impact on product quality in stamping. In the paper, in order to improve the formability of 7A09 aluminum alloy in stamping, the influence of different heat treatment schemes on the properties of 7A09 aluminum alloy is analyzed, and a pretreatment process suitable for 7A09 aluminum alloy stamping is formulated. At the same time, to optimize pretreated 7A09 aluminum alloy stamping parameters, an improved BP neural network and multi-objective particle swarm algorithm are proposed. Relevant tensile and bulging experiments of different shapes are carried out for the pretreated 7A09 aluminum alloy material. The Hockett-Sherby constitutive equation is established. Take a double-C part as an example, the stamping process is simulated by a finite element model, and the stamping process of the double-C part is optimized by means of the improved BP neural network and multi-objective particle swarm algorithm. The results show that the proposed methods can effectively improve the quality of the formed part.

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The data presented in this study are available on request from the corresponding author.

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Funding

This work is supported by the Key Laboratory of Mechanical Structure Optimization & Material Application Technology of Luzhou in China (optimization design of blank holders in nonisothermal stamping based on CAE, SCHYZSA-2022–04).

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Authors and Affiliations

  1. School of Mechanical Engineering, Southwest Jiaotong University, No. 111, North Section 1, Second Ring Road, Chengdu, Sichuan, 610031, People’s Republic of China

    Yanmin Xie, Kai Feng, Meiyu Du, Lei Li & Yangping Wang

  2. Chengdu Aircraft Industrial (Group) Co, Ltd. No. 88, Weiyi Road, Huangtianba, Qingyang District, Chengdu, Sichuan, 610073, People’s Republic of China

    Lingfeng Du

Authors
  1. Yanmin Xie
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  2. Kai Feng
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  3. Meiyu Du
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  4. Lingfeng Du
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  5. Lei Li
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  6. Yangping Wang
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Contributions

Yanmin Xie: supervision, resources, writing—review & editing. Kai Feng: conceptualization, methodology, investigation, writing—original draft. Lingfeng DU: conceptualization, resources, writing—review & editing. Meiyu Du: methodology, writing—review & editing. Yangping Wang: writing—review & editing. Lei Li: writing—review & editing.

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Correspondence to Yanmin Xie.

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Xie, Y., Feng, K., Du, M. et al. Analysis and optimization of the stamping process with pretreated 7A09 aluminum alloy. Int J Adv Manuf Technol 128, 669–683 (2023). https://doi.org/10.1007/s00170-023-11937-6

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  • DOI: https://doi.org/10.1007/s00170-023-11937-6

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