【摘要】 本文用加权余量法,建立了各向同性体三维稳定温度场的边界积分方程和离散型方程,导出了边界单元法在稳定温度场中出现的两个奇异积分的具体解析表达式。此外,对全域积分和系数矩阵的对称化也作了一些工作。更多还原

【Abstract】 Boundary integral and its discrete equations are established usingweighed residue method for the isotropic and steady- state cases inthree-dimensional temperature field. Analytic expressions are derivedfor two singular integrations which occur in the steady- state tempe-rature field when using boundary element method. The domain ofintegration and the symmetrization of coefficient matrix are discussedin detail. Advantages as simple, rapid and reliable in computationare shown through examples included.更多还原