when the steel cable is online tested

the cable and detection instrument make relative movement

and the eddy current arising in the cable severely affects the accuracy of the flaw quantitative detection.The professional electromagnetic finite element software is adopted

two-dimensional axisymmetrical pole coordinate is chosen

geomeric full-scale model of the steel cable flaw testing structure is built

and magnetic circuit flux line distribution and eddy current distribution are numerically simulated using the transient solver.The analysis results show that

with the increasing of the velocity

magnetic circuit flux line density adds

the eddy current density first increases and then decreases

and diffusion direction of flux line and eddy current has something to do with the direction of the velocity.Results are in agreement with experiment results of foreign public publication papers

and it proves validity of the application of finite element simulation in steel cable online testing.