Finite Element Analysis of Dynamic Characteristics of HDD Spindle System Considering Supporting Structure with Complex Shape

복잡한 지지구조의 유연성을 고려한 HDD 스핀들 시스템의 유한요소 동특성 해석

This paper suggests the finite element method to analyze the dynamic characteristics of a rotating HDD system including the supporting structure with general shape. The flexible supporting structure was modeled by tetrahedra elements to produce a finite element model of disk-spindle-shaft-housing system and the dynamic characteristics of the HDD system was investigated due to the change of rotating speed. The validity of the presented method was verified by the modal testing. The supporting structure has an crucial effect on lower modes for HDD system, so that it is required to consider the supporting structure to accurately analyze the dynamic characteristics of HDD system.