Recent advancement in ability of a computing machine has developed an active trend for replacing an experiment with a simulation. In order to perform the analysis of a real structure pertained with extremely large fluctuations, both geometrically and materially, a large number of elements are required, and efficient analysis is indispensable. In contrast, it is often the case that an actual structure has a symmetrical shape in whole or in part, and its boundary value also have a symmetrical distribution. Therefore, there have been proposed a number of analytic techniques that take advantage of a symmetry of a structure. However, symmetry includes wide variations, such as plane symmetry, inverse symmetry, axial symmetry, helical symmetry, and short cake symmetry. Further, the generation method of a mirror image, the number of mirror images to be generated, and so on are different in each case. Therefore, a program corresponding to each case must be configured. Further, the presence of a problem of a mixture of different types of symmetry such as mixture of plane symmetry and axial symmetry increases the number of cases to be coped with, which causes serious problems in maintenance and expandability of a program. This paper has proposed a boundary element method processing boundary condition information and geometrical information individually as a method of efficiently analyzing structures that are symmetrical in geometry and boundary conditions, and has confirmed its validity through analyses of electrochemistry. Further, the proposed technique makes it possible to reduce analysis time significantly.%近年，計算機性能の向上により実験を数値シミュレーrnションに置き換える動きが盛んになっており，要求されrnる解析の規模とスピードは計算機の進歩をさらに上回rnる速度で増大してぃる．幾何学的，材質的変化の極めrnて多ぃ実際の構造物を解析するためには，膨大な数のrn要素が必要であり，効率的な解析が必要不可欠となる．rn種々の解析手法の中で，境界要素法（Boundary ElementrnMethod：BEM）は開領域を厳密に扱うことが出来るたrnめ，閉鎖域を扱うことが多ぃ音，腐食，電磁波などの解rn析に有効である．
展开▼
