Electric performance of fastened hybrid busbars: An experimental and numerical study

This paper is focused on fastened hybrid busbars made from copper and aluminium with the purpose of analysing the influence of the steel bolts, of their tightening torque and of the surface condition of the sheets on the electric current flow and electric resistance of the joints. The methodology co...

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Bibliographic Details
Published in:Proceedings of the Institution of Mechanical Engineers. Part L, Journal of materials, design and applications Journal of materials, design and applications, 2022-06, Vol.236 (6), p.1152-1163
Main Authors: Sampaio, Rui FV, Pragana, João PM, Bragança, Ivo MF, Silva, Carlos MA, Nielsen, Chris V, Martins, Paulo AF
Format: Article
Language:English
Subjects:
Aluminum
Bolts
Busbars
Contact pressure
Copper
Electric contacts
Experimentation
Finite element method
Metal sheets
Surface roughness
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Summary:This paper is focused on fastened hybrid busbars made from copper and aluminium with the purpose of analysing the influence of the steel bolts, of their tightening torque and of the surface condition of the sheets on the electric current flow and electric resistance of the joints. The methodology combines experimentation with unit cells that are representative of the joints and electro-mechanical numerical simulation using a finite element computer program developed by the authors. Results are a step forward in understanding the combined influence of bolts, contact pressure and surface roughness on the electric performance of fastened hybrid busbars. Design guidelines for dimensioning the cross sections of the copper and aluminium sheets and for effectively distributing bolts across the contacting surfaces are also provided.
ISSN:1464-4207
2041-3076
DOI:10.1177/14644207211043009