TRANSACTIONS OF THE KRYLOV STATE RESEARCH CENTRE

Science journal

 
ISSN (print) 2542-2324 /(online) 2618-8244


Articles of The Transactions of KSRC








Crimp load calculation procedure for copper and brass lugs of conducting wires in marine cables



Full text article ( in russian)

Year

 
2019

Issue

 
20192

Volume

 
2

Pages

 
160–170

Caption

 
Crimp load calculation procedure for copper and brass lugs of conducting wires in marine cables

Authors

 
Antipkina V.A., Godin V.P.

Keywords

 
brass lugs, end wall, crimp load, working cavity of the stamp, connection strength, wire straining, bend springing angle, conducting wire.

DOI

 
10.24937/2542-2324-2019-2-S-I-160–170

Summary

 
This paper suggests calculation procedure for crimping load on copper and brass lugs of conducting wires in marine cables, taking into account mechanical properties of connected elements and geometry of the joint. It discusses the prospects of LS59-1 brass alloy as an alternative material for crimp lugs in terms of connection strength. Calculation procedure suggested in this paper was used to obtain crimping loads at nominal and minimum height of the stamp’s working cavity for the lugs made of different materials: copper M1, brass L63 and brass LS59-1. At the nominal height of the stamp’s working cavity, crimping loads have been obtained for the lugs made of M1 copper and L63 and LS59-1 brass alloys with nominal, reduced and increased thickness of lug end wall. At the minimum height of the stamp’s working cavity, the calculations have been performed for the lugs with nominal wall thickness. Wire cross-sections were 0.35; 0.50; 0.75; 1.00 and 1.50 mm2. After that, crimping loads obtained for LS59-1 brass lugs were compared to those obtained for the copper ones and the ones made of L63 brass alloys. For strength assessment of the joints, bend springing angles have been calculated for the copper and for L63 and LS59-1 brass alloys. The study has shown that LS59-1 lugs have their average crimping load ~45% higher than copper ones and 5% lower than L63 ones, because crimping load of the latter is sometimes higher than for LS59-1 lugs. Yet, LS59-1 lugs offer greater strength of connections than L63 ones. Thus, LS59-1 brass alloy has been confirmed as a fitting material for crimp lugs that ensures secure connection of wires.

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ISSN (print) 2542-2324 / ISSN (online) 2618-8244

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