Title :
Modeling of hard disk drives for vibration analysis using a flexible multi-body dynamics formulation
Author :
Gao, F. ; Yap, F.F. ; Yan, Y.
Author_Institution :
Center of Mech. of Micro-System, Nanyang Technol. Univ.
Abstract :
This paper presents a flexible multi-body dynamics formulation to analyze vibration of hard disk drives. The formulation is applied in analyzing vibration of VCM-actuators assembly and disks-spindle system. There are flexible components as well as rigid bodies in the system. Governing equations of motion of the VCM-actuators assembly and disks-spindle system are derived by using a Lagrangian formulation. Elastic deformations of flexible bodies are described by modal coordinates from a finite element formulation. After obtaining the formulations, modal analysis and shock response are analyzed. The numerical analyses are significantly faster compared to a full finite element approach, and is potentially useful when the system requires repeated analysis of the model of the entire system when certain design variables are changed
Keywords :
actuators; disc drives; finite element analysis; hard discs; shock measurement; vibrations; HDD; VCM-actuators assembly; disk-spindle system; elastic deformation; finite element formulation; flexible multibody dynamics formulation; hard disk drives; modal analysis; motion equations; shock response; vibration analysis; Actuators; Assembly systems; Electric shock; Equations; Finite element methods; Hard disks; Lagrangian functions; Modal analysis; Numerical analysis; Vibrations;
Conference_Titel :
Asia-Pacific Magnetic Recording Conference, 2004. APMRC 2004
Conference_Location :
Seoul
Print_ISBN :
0-7803-8717-1
DOI :
10.1109/APMRC.2004.1521939