三维非规则非均匀边界元网格的简便的高精度算法

SIMPLE AND HIGH-PRECISS METHODS FOR 3D IRREGULAR AND UNEQUAL BEM MESHES

对三维直接边界元中一阶奇异积分、一阶近奇异积分以及非奇异积分进行统一处理，给出了一种提高积分计算精度的简便有效的方法，对非规则非均匀边界元网格可获得比一般方法高得多的计算精度，非常适合边界形状比较复杂的三维实际问题的边界元分析．

This peper gives a method to Process one-order sinsular integrals, one-order nearly singular integrals and nonsingular nitegrals uniformly, and gives a simple and effective method to enhance atufating precision. Using these methods, the better resultS can be obtained for 3D irregular and unequal BEM meshes used in practical problems than that of using the general ones.