计算非线性时变涡流场的有限元方程频域算洁

Finite Element Method in Frequency Domain for Nonlinear Transient Field Problems

本文提出了一种计算时变非线性涡流场的有限元方程频域算法，该方法在时域内确定非线性单元各时刻的磁阻率，利用离散付立叶变换在频域内求解有限元方程，并用直接解法与逐次松驰因子迭代法相结合的方法处理频域方程组的非线性问题。文中还用一算例验证了本法的有效性。

A new approach for studying nonlinear time-dependent eddy current field problems by finite element method in frequency domain is develOPed.The reluctivity of nonlinear element of each time is determined in time domain in this method,while sOlution of finite element equations of transient process is Performed in frequency domain by the aid of discrete Fourier transformation.Combination of direct solution and successive iteration is applied to the whole process. An example is given to examine the effectiveness of this method.