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Modeling and Analysis of Variable Parameters for Compound Hole Expansion of Fit Bushing

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Abstract

A three-dimensional finite-element model was generated of the hole expansion of a fit bushing for an aerospace aluminum alloy lug with a hole, and the effect of the compound hole expansion treatment in which the hole wall and the bushing are both extruded was investigated. Results show that the main technical advantage of compound hole expansion (CHE) lies in the subdivision of the strengthening effect on the bushing and hole parts, which in turn reduces the requirements of the composite processing technology on the extrusion equipment; under certain conditions, both the bushing and the hole parts have weaker strengthening effects if the selected interferences in the two stages of the CHE processing are both low.

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Acknowledgment

This work was supported by the National Natural Science Foundation of China (51801031, 52075298), the Natural Science Foundation of Guangdong Province of China (2018A030310526), the Fund of the State Key Laboratory of Solidification Processing in NPU (SKLSP202014), the Open Fund for Jiangsu Key Laboratory of Advanced Manufacturing Technology (HGAMTL-1901), the Research Fund of Key Laboratory of High Performance Manufacturing for Aero Engine (Northwestern Polytechnical University), Ministry of Industry and Information Technology (HPM-2020-06), and the Fundamental Research Funds of Shandong University (2020GN002).

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Authors and Affiliations

  1. Jiangsu Key Laboratory of Advanced Manufacturing Technology, Huaiyin Institute of Technology, Huai’an Jiangsu, 223001, China

    Guoxin Lu, Xu Pei & Rong Gao

  2. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an Shanxi, 710072, China

    Guoxin Lu & Heng Li

  3. Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, School of Materials Science and Engineering, Shandong University, Jinan Shandong, 250061, China

    Guoxin Lu & Zhong Ji

  4. Department of Metallurgy and Materials Engineering, University of Malta, Msida, 2080, MSD, Malta

    Glenn Cassar

  5. Aviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material, Department 5, AECC Beijing Institute of Aeronautical Materials, P.O. Box 81‐5, Beijing, 100095, China

    Qiang Wang

  6. Key Laboratory of High Performance Manufacturing for Aero Engine, Ministry of Industry and Information Technology, Northwestern Polytechnical University, Xi’an Shanxi, 710072, China

    Changfeng Yao

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  1. Guoxin Lu
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Correspondence to Guoxin Lu.

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Lu, G., Li, H., Pei, X. et al. Modeling and Analysis of Variable Parameters for Compound Hole Expansion of Fit Bushing. J. of Materi Eng and Perform 30, 8210–8223 (2021). https://doi.org/10.1007/s11665-021-06009-3

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  • DOI: https://doi.org/10.1007/s11665-021-06009-3

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