Reduced-order modeling of field-excited wire harness transmission lines in the frequency domain

The prediction of the induced effects on a transmission line constituted by a complex wire harness, excited by an electromagnetic field, can be very expensive from the computational view point. However if the interest is focused only on a reduced number of critical wires in the entire harness, i.e. the analysis of the networks interconnecting critical apparatus onboard aircrafts, the prediction procedure can be simplified. Reduced-order models, taking into account for the presence of all the other conductors in terms of crosstalk and shielding effects, are developed considering the non critical wires open-ended or short-circuited. Applications are carried out to predict the terminal open-ended voltages and short-circuit currents of some critical wires in a wire harness transmission line illuminated by a fast transient electromagnetic pulse (EMP)