For complex real boundaries , such as a concave boundary , it is approximate because the requirements for virtual boundary can not be satisfied 理论结果表明，虚边界元法本身是一种严格的方法，但在一定条件下，它是一种近似方法。
The application range of boundary element methods is reduced in engineering by the difficulty of evaluation of the nearly singular integrals for a long time 边界元法中存在的几乎奇异积分难题，一直限制着边界元法在工程中的应用范围。
In this paper , a boundary element method is mainly developed for analyses of the characteristic of interface crack of two - dimensional ( 2 - d ) thermal barrier coated structure 本文致力于带热障涂层构件的热应力及断裂特性分析边界元法研究及应用。
The equation of motion , in which the interaction between structure and fluid is taken into account , is solved by the wet mode - superposition method 根据结构特点与响应特征，用弹性薄板理论简化结构，用边界元法计算流体动力，并用模态综合法计算波激振动响应。
This article uses foundation layered elastic modle which is analogy to the real project , deduces and solves the plate by boundary element method ( bem ) and summing in layers method 本文选用与实际工程场地特性较为接近的分层弹性地基模型，采用边界元法推导并求解中厚板。
In this paper , the heat transfer problem in directly buried pipes with multi - layer insulation was resolved by boundary element method and the corresponding computer program was designed 本文介绍了一种用边界元法分析复合保温结构中温度场的方法，并编制出相应的计算程序。
Some good characteristics of bem are lost as a significant cost ; the contact boundary conditions can not be satisfied on whole boundary , even in the sense of discretization 付出的代价是丧失了边界元法原有的一些优良特性，接触边界条件在离散意义下也不能再在整个边界单元上精确满足。
Both the displacement and traction boundary conditions are satisfied on the contacted region in the sense of discretization . in this way the good characteristics of bem can be preserved 接触面上的位移和面力边界条件均能在边界元离散意义下精确满足，因此它能够保持边界元法的优良特性。
We can attribute it to the laplace equations and can use panel method to solve this kind of problems because of its many notable advantages in the occasion of infinite water depth 对于无限水域中的波浪与物体相互作用问题，面元法(边界元法)较其他的方法有着较为显著的优点，因此被广泛采用。
Fem makes use of the ansys - emag software , while bem adopts our own developed program . a basic form of the iterative calculation with the combination of fem and bem is put forth 在迭代计算过程中，有限元法使用了ansys - emag软件，边界元法使用作者自己开发的计算程序，并确定了基本迭代格式。
