Abstract
Recent development of the shock analysis on the HDD is briefly reviewed. A flexible multi-body dynamics formulation is developed to simulate the shock response of the HDD. If one component in the HDD is changed, only mode shapes and frequencies of that component should be re-calculated and then used to obtain the system’s response. Steady state Reynolds equation is solved to obtain the air pressure on the slider and disk for various slider positions. An air pressure table is formed and used to model the non-linear air bearing during the simulation. Responses of flying height for different direction and shock duration time are analyzed. Results show that the flying state of the slider is more sensitive to the shock with shorter duration time.
Similar content being viewed by others
References
Gao F, Yap FF, Yan Y (2005) Modeling of hard disk drives for vibration analysis using a flexible multibody dynamics formulation. IEEE Trans Magn 41:744–749
Harmoko H, Yap FF, et al (2006) Investigation of effect of various components in HDD on the shock tolerance. ASME/JSME joint conference on micromechatronics for information and precision equipment (MIPE 2006), Santa Clara, pp 21–23
Harrison JC, Mundt MD (2000) Flying height response to mechanical shock during operation of a magnetic hard disk drive. ASME J Tribol 122:260–263
Jayson EM, Talke FE (2005) Optimization of air bearing contours for shock performance of a hard disk drive. ASME J Tribol 127:878–883
Jayson EM, Murphy JM, Smith PW, Talke FE (2002) Shock and head slap simulations of operational and non-operational hard disk drives. IEEE Trans Magn 38:2150–2152
Jayson EM, Murphy JM, Smith PW, Talke FE (2003) Effects of air bearing stiffness on a hard disk drive subject to shock and vibration. ASME J Tribol 125:343–349
Jayson EM, Smith PW, Talke FE (2003) Shock modeling of the head-media interface in an operational hard disk drive. IEEE Trans Magn 39:2429–2431
Jayson EM, Murphy JM, Smith PW, Talke FE (2003) Head slap simulation for linear and rotary shock impulses. Tribol Int 36:311–316
Lin CC (2002) Finite element analysis of a computer hard disk drive under shock. ASME J Mech Design 124:121–125
Shabana AA (1998) Dynamics of multibody systems, Cambridge University Press, London
Tseng CW, Shen JY, Shen IY (2003) Vibration of rotating-shaft hdd spindle motors with flexible stationary parts. IEEE Trans Magn 39:794–799
Zeng QH, Bogy DB (2002) Numerical sinulation of shock response of disk-suspension-slider air bearing systems in hard disk drives. Microsyst Technol 8:189–196
Zeng QH, Huang FY, Tsuchida H (2005) Numerical simulation of shock response of a hard disk drive at operational state. In: Magn conf, 2005. INTERMAG Asia 2005, Dig IEEE Int, pp 117–118
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Liu, M., Yap, F. & Harmoko, H. Shock response analysis of hard disk drive using flexible multibody dynamics formulation. Microsyst Technol 13, 1039–1045 (2007). https://doi.org/10.1007/s00542-006-0310-0
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00542-006-0310-0