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

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...

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Bibliographic Details
Published in:Journal of materials engineering and performance 2021-11, Vol.30 (11), p.8210-8223
Main Authors: Lu, Guoxin, Li, Heng, Pei, Xu, Cassar, Glenn, Ji, Zhong, Gao, Rong, Wang, Qiang, Yao, Changfeng
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Corrosion and Coatings
Engineering Design
Materials Science
Quality Control
Reliability
Safety and Risk
Tribology
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Summary: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.
ISSN:1059-9495
1544-1024
DOI:10.1007/s11665-021-06009-3