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将边界元方法用于分析二维复合材料结构的自由振动模态．利用特解处理体积力（惯性力），仅需静态基本解就可求解问题．对一各向同性悬臂梁，用该法得到的结果与用有限元或各向同性边界元法得到的结果符合得很好．但该法可解各向异性问题．对层状复合材料简支梁，用该法得到的数值结果与用一维层状复合材料梁的理论解的比较表明，当结构的长厚比大于２０时，二者符合得很好，当结构的长厚比小于２０时，一维层状材料梁的理论将产生很大的误差
The boundary element method is used to analyze the free vibration modes of two-dimensional composite structures. Using special solutions to deal with the body force (inertial force), only static basic solution can solve the problem. For an isotropic outrigger, the results obtained by this method are in good agreement with those obtained by the finite element or isotropic boundary element method. But the law solves the problem of anisotropy. The comparison between the numerical results obtained with this method and the theoretical solutions using the one-dimensional layered composite beams shows that the good agreement between the two is obtained when the aspect ratio of the structure is greater than 20 If the aspect ratio of structure is less than 20, the theory of one-dimensional layered beam will produce a great error