The purpose of this study is to examine the application and effectiveness of tuned mass dampers for reducing cabinet vibration in plants. Cabinet with lower structural rigidity than plant subject to seismic design standards is susceptible to resonance. SolidWorks was used for 3D modeling of the cabinet, and ANSYS Workbench was used to create a mesh. The vibration characteristics of the cabinet were investigated through modal analysis, and the possibility of resonance and vibration reduction performance of the cabinet were evaluated. The number of modes in the cabinet was set to 100, and the frequency and modal participation mass ratio of each mode were calculated. In order to examine the possibility of vibration reduction by tuned mass dampers, the vibration response characteristics of cabinets with and without tuned mass dampers were compared. The analysis results showed that the third mode had a significant effect on the dynamic behavior of the cabinet and that the modal participation effective mass ratio was larger than that of other vibration modes. And as the mass of the tuned mass damper increased, the vibration response of the cabinet decreased significantly, and the peak value of the cabinet decreased by up to 52%.

Abstract
1. 서 론
2. 형상 모 델링 및 모 드해석
    2.1 형상 모 델링
    2.2 모 드해석
3. 동조질량댐퍼의 해석 및 설계
    3.1 댐퍼해석
    3.2 댐퍼설계
4. 해석결과
4. 결 론
References

• 이창수(Department of Mechanical Engineering, Sunmoon University, Graduated Student) | Chang Soo Lee
• 정규철(Department of Mechanical Engineering, Sunmoon University, Graduated Student) | Kyu Chul Jung
• 권영철(Department of Mechanical Engineering, Sunmoon University) | Young Chul Kwon Corresponding author