Modeling of lightning current distribution in complex assemblies taking into account non-linear effects

Complex assemblies such as helicopters' rotors show, when struck by lightning, a current distribution between several paths which can be driven not only by ohmic and inductive effects but also by non-linear phenomena such as voltage breakdown between mobile pieces or melting/rupture of bonding...

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Bibliographic Details
Published inIET Conference Proceedings
Main Authors Duval, Y, Perraud, R, Tagliana, B
Format Conference Proceeding
LanguageEnglish
Published Stevenage The Institution of Engineering & Technology 09.09.2015
Subjects
Assemblies
Breakdown
Cables
Circuits
Computer simulation
Current distribution
Electric potential
Helicopters
Lightning strikes
Nonlinear phenomena
Nonlinearity
Rotors
Rupture
Three dimensional models
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Summary:Complex assemblies such as helicopters' rotors show, when struck by lightning, a current distribution between several paths which can be driven not only by ohmic and inductive effects but also by non-linear phenomena such as voltage breakdown between mobile pieces or melting/rupture of bonding cables. To compute the distribution of currents taking into account those non-linear effects, we implemented a methodology combining 3D electromagnetic modeling and electrical circuit models. The final computation is performed with an electrical circuit software that allows dealing with a multiport representation of the 3D-EM model and electrical equivalents to non-linear effects such as a fuse to simulate melting of cables and a voltage controlled switch to simulate breakdown. The results we obtained are promising and give simulation values matching quite well the measurements performed during lightning tests on a rotor.
ISBN:9781785612237
1785612239
DOI:10.1049/ic.2015.0167