The paper describes an approach to modelling the conductance of a textronic structure based on the iterative fundamental solutions method. The analysis of the current density distribution in a thin conductive layer containing roughness resulting from the applied manufacturing technology is aimed at estimating its impact on the total current and the conductivity of the conductive path. The simulations showed that the current density distribution in a conductive path depends on the nature of its surface, and increasing its roughness reduces its conductance. The proposed solution makes it possible to define a structure model in three geometrical dimensions, and its numerical implementation in the form of the proposed method ensures efficiency and computational accuracy.
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