抄録
An effective three-dimensional boundary element method was developed for predicting electrogalvanic field response of a structure which consists of slender parts. First, the corrosion field which has slender surfaces is analyzed by the boundary element method with simple line-shape elements. By this method, the axial distributions of potential and current density of slender parts can be obtained, but not circumferential distributions. Then, the cross section of the slender part considered is discretized with two-dimensional elements, and the circumferential distributions of potential and current density are obtained, using the values which were obtained with the simple line-shape elements. By using the proposed method, the CPU time is decreased. A few numerical examples are presented to demonstrate the practical applicability of the proposed method.
