任意横截面形状同轴线的高次有限元分析

本文用高次有限元分析了任意横截面形状同轴线特性阻抗;给出了一个用二次元求解同轴线特性阻抗的通用程序。由于提出了一种便于编制通用程序的计算机自动区域剖分方法,使整个分析过程十分简便有效,大大提高了解题效率。文中对十余种不同横截面形状同轴线特性阻抗的计算,有力地证实了该程序的可靠性,通用性和准确性。同时,在数值分析的基础上,对高次元的解题效能进行了讨论。

HIGH-ORDER FINITE-ELEMENT ANALYSIS OF VARIOUS COAXIAL LINES WITH ARBITRARY CROSS-SECTIONS

The high-order finite-element method is used for analyzing the characteristic impedances of the coaxial lines with arbitrary cross-sectons. A standard program with second order element analysis for calculating the characteristic impedances of various coaxial lines is developed. A computer automatic division technique is proposed to faciliate the development of the general program. As a result, the whole analysis procedure becomes simple and the solusion efficency raises tremendously. The calculations of the characteristic impedances for more than ten different coaxial lines verify the reliability, generality and accuracy of the present program. The validity of the high-order element is also discussed on the basis of the numerical analysis.