The Finite Element Analysis for Reliability of Built-DFH in Magnetic Head

The assessment for the reliability design of Built-DFH in Magnetic head is very important.It recurrently uses the empirical data to instruct the production in the craft now.Unfortunately,the error is very large.Theoretically,everybody is simulating the reliability using the Matlab software.Owing to the limit of the cell size,the simulation algorithm will expire along with the rounding error superimposition.This article uses the ANSYS software.The experiment was to establish the basic parameters and select the appropriate cell type,material properties and give the finite element model of the head.The results according to the life prediction using the model above shows,the finite element model is effective.Furthermore,in new DFH in 50Ω,the strength of thermal effects is larger above 10% than the traditional shield.The regions with problems of the actual life failed samples are in the line of the corner.