抄録
An efficient numerical method is proposed for three-dimensional corrosion analysis of structures having net geometory, such as rebar in concrete, fence with sea-side structure. The knowledge of physical quantities (potential and current density) on the surface of corroding materials is very important in corrosion monitoring and corrosion protection. Boundary element method is suitable for corrosion analysis, because it doesn't require discretization of internal domain. Enormous number of elements is necessary to discretize the structure having net geometory. To reduce the number of boundary elements, our method is based on complex Fourier series expansion of boundary quantities in circumferential and axial direction of net structures. In order to demonstrate the usefulness of the method, Example problem of rebar in concrete with cathodic protection system are presented.
