Study of changing the pitch and roll of a head gimbal assembly (HGA) from the clamping force during measurement at HGA level by finite element method (Thai)

Abstract

This research studied head gimbal assembly (HGA) deformation, affecting slider twist in the axes of pitch and roll through 7 lbf, 8 lbf and 9 lbf clamping force without any additional forces applied at the edge of the load beam to Z-height position. A Finite Element Program was used in this research to analyze and determine the clamping force that generate least HGA deformation and slider twist in the pitch and roll axes. The results show that 7 lbf clamping force produce least HGA deformation and error in pitch and roll axes, which are 0.011% and 0.0092%, compared with 8 lbf and 9 lbf clamping force, which create 0.015% and 0.010%, 0.014% and 0.012%, respectively.