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Research on bending forming method of large diameter-thickness ratio thin-walled tubes for aerospace

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Abstract

Large diameter thin-walled tubes are key lightweight components with important applications in the aviation and aerospace industries. However, bending forming is very difficult due to multi-die constraints and multiple forming defects. In this study, a numerical control (NC) rotary draw bending (RDB) forming method for large diameter-to-thickness ratio thin-walled (LDTRTW) tubes was investigated. First, a bionic elastic mandrel was introduced and applied to the NC RDB forming process. Then, a finite element (FE) model for NC RDB forming of LDTRTW stainless steel tubes was established. Thereafter, a method for engineering translation and design of the bionic elastic mandrel was proposed. Finally, a bending experiment was conducted and the experimental results were compared to the simulation results to validate the rationality of the FE model and the effectiveness of the bionic elastic mandrel, which is important for enriching the bending forming technique of LDTRTW tubes.

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Funding

This study is financially supported by the Public Welfare Technology Application Research Projects of Zhejiang Province (2016C31043), the Zhejiang University of Technology Keqiao Innovation Institute Technology Project (2018KQ012), key research and development project of Zhejiang province (2018C01078), and the National Natural Science Foundation of China (Nos. 51675478 and 51775489).

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Authors and Affiliations

  1. Zhijiang College of Zhejiang University of Technology, Hangzhou, 310032, China

    Lanfang Jiang

  2. School of Mechanical Engineering, Zhejiang University, Hangzhou, 310058, China

    Shuyou Zhang & Yixiong Feng

  3. College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou, 310032, China

    Yaqun Wang, Hong Liu & Hong Shao

  4. Zhejiang King-Mazon Machinery Co., Ltd, Lishui, 321403, China

    Yaochen Lin & Fei Zhang

Authors
  1. Lanfang Jiang
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  2. Shuyou Zhang
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  3. Yaqun Wang
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  4. Yixiong Feng
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  5. Yaochen Lin
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  6. Hong Liu
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  7. Fei Zhang
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  8. Hong Shao
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Correspondence to Lanfang Jiang.

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Jiang, L., Zhang, S., Wang, Y. et al. Research on bending forming method of large diameter-thickness ratio thin-walled tubes for aerospace. Int J Adv Manuf Technol 102, 3037–3049 (2019). https://doi.org/10.1007/s00170-019-03328-7

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  • DOI: https://doi.org/10.1007/s00170-019-03328-7

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