介绍了漏磁场分析的基本理论以及由麦克斯韦方程导出的泊松方程对应的能量泛函,利用基于此理论基础的ANSYS有限元分析软件的ANSYS Multiphysics软件包对管道漏磁场进行模拟仿真,能得出大量缺陷漏磁场数据,这为缺陷漏磁检测定量化打下基础。
The basic principle of Magnetic Leakage Fields (MLF) and the energy functional of poisson's equation which is derived from the Maxwell equations are introduced. ANSYS multiphysics software package based on the above theories is used to simulate MLF of pipeline, and great deals of MLF data are obtained. It is the basis of quantificational magnetic flux leakage inspection for defects.