Vibration analysis of HDD actuator with equivalent finite element model of VCM coil

Dong Woohn Kim, Jin Koo Lee, No Cheol Park, Young Pil Park

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


As the rate of increase in areal density of the HDD has accelerated, dynamic characteristics of the HDD actuator need to be improved with respect to the performance of the tracking servo and shock transmission. Therefore, it is important to analyze the vibration characteristic of the HDD actuator that consists of the VCM part, E-block and pivot bearing. In this paper, vibration modes of the HDD actuator are investigated the using finite element and experimental modal analyses methods. To develop a detailed finite element model, finite element models of each components of the actuator assembly are constructed and tuned to the results of the EMA. The VCM coil is modeled as an equivalent finite element model that has an orthotropic material property using auto-model updating program. Auto-model updating program with improved sensitivity based iterative method is applied to build a detailed finite element model using the result of the EMA. A detailed finite element model of the HDD actuator is then constructed and analyzed.

Original languageEnglish
Pages (from-to)679-690
Number of pages12
JournalKSME International Journal
Issue number5
Publication statusPublished - 2003 May

Bibliographical note

Funding Information:
This researchh as been supportedb y KOSEF (Grant No. 2000G0102)a nd the authorsa regra-teful for the support.

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering


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