【摘要】 本文重点研究用有限元与边界元结合方法计算电场时遇到的几个关键问题:如何正确结合以减少计算机机时和内存;如何编制适用于开域、闭域或半开域场计算的通用程序;如何提高计算精度。 本文采用指数插值法,推导出一种新的边界电荷插值函数。 计算实例表明本文方法较好地解决了上述几个问题。更多还原

【Abstract】 Calculating the electric field by combined method of finite element and boundary element (FEM-BEM) is usually met by some difficult problems.In order to save computing time and to lessen inner storage of computer, and to universalize the program for computing the infinite and semiinfinite region electric field as . well as finite region, this paper discusses how to ingeniously and correctly combine the FEM and BEMTo improve the calculation accuracy of the combined method, an interpolation model of electric charge on the discrete boundary is derived in detail.The proposed combined method may be applied to 2-D or axisymmetric infinite region electric field with multimedia. Two Examples are presented to demonstrate and illustrate the application of the FEM-BEM.更多还原