论文部分内容阅读
介绍管道漏磁检测中有限元计算方法的基本原理 ,推导出轴对称的漏磁检测系统在极坐标下的有限元方程、网格剖分方法及有限元计算的边界条件 ,并计算出不同形状缺陷的管道的磁力线分布图。从计算结果可清楚地看出不同缺陷对磁力线分布造成的影响也不相同。
This paper introduces the basic principle of the finite element method in the magnetic flux leakage testing of pipelines and derives the finite element equations of the axial symmetric magnetic flux leakage testing system under polar coordinates, the meshing method and the boundary conditions of finite element calculation, and calculates different shapes Defective pipeline magnetic field line distribution. It can be clearly seen from the calculation results that the influence of different defects on the magnetic flux distribution is also different.