A moment method of the Galerkin (variational) approach is applied to analyze the grounding resistances of driven rodbed of various configurations. Using this approach the resistance of a rodbed of N rods in two-layer soil requires only a mauix size of 2NX2N (two segments for each rod). The error m the calculated resistance is less than 4% compared to the resistance calculated by point matching moment method of large number of segmentation for each rod. The efficiency due to a small m a w with high accuracy al…
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