Furthermore, each element in the singular stiffness matrix can be expressed by some more simple analytic formulas.
而且奇异单元刚度矩阵中的各元素可以用较简单的分析式表出。
The singular integration will affect the precision of the result while the Boundary Element Method (BEM) is used in calculating sound radiation.
边界元法应用于计算辐射声场时，由于奇异积分的存在，会影响到计算结果的精度。
Using the interpolation models for both singular crack tip elements and other crack linear elements, the boundary element formulas of the torsion rigidity and stress intensity factors were given.
利用裂纹尖端的奇异元和线性元插值模型，给出了扭转刚度和应力强度因子的边界元计算公式。
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