A new fluid structure coupling approach for high frequency/small deformation engineering application

The new sequential coupling method is developed to investigate the fluid-structure interactions for the high-frequency and small displacement systems. The developed approach is applied to a model disk drive to investigate the interactions between the air flow and suspension. The results indicate that the dominated coupling effect is induced by the first mode of the boundary vibration in the out-of-plane direction. It is found that in the absence of coupling effect the arm vibration amplitude is overestimated in the out-of-plane direction, and underestimated in the off-track direction.