Title :
Flow induced vibration of head suspension assemblies in hard drives
Author :
Tadepalli, Srinivas ; Anandan, Prashanth
Author_Institution :
Seagate Technol., Bloomington, MN, USA
Abstract :
Aeroelastic effects are observed due to the airflow excitation on the head suspension assembly in disc drives. Experimentally measured off-track slider motion and out-of-plane suspension motion follow an analytical scaling with RPM suggesting the flow is turbulent at 15 kRPM and above. Actuator and head gimbal assembly (HGA) modes are observed to shift lower, indicating the mechanism of nonlinear aeroelastic interactions.
Keywords :
disc drives; elasticity; hard discs; magnetic heads; magnetic recording; turbulence; vibrational modes; actuator modes; aeroelastic effects; airflow excitation; disc drives; flow induced vibration; hard drives; head gimbal assembly modes; head suspension assemblies; nonlinear aeroelastic interactions; off-track slider motion; out-of-plane suspension motion; turbulent flow; Actuators; Assembly; Delay; Disk drives; Fluid flow; Fluid flow measurement; Frequency; Hard disks; Motion analysis; Motion measurement;
Conference_Titel :
Magnetic Recording Conference, 2002. Digest of the Asia-Pacific
Conference_Location :
Singapore
Print_ISBN :
0-7803-7509-2
DOI :
10.1109/APMRC.2002.1037629
