지진에 의한 모형 캐비닛의 진동특성 해석연구
Analysis of Vibration Characteristics of Model Cabinet by Earthquake
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초록
In order to design a seismic safety of a cabinet affected by an earthquake, vibration analysis was performed using a model cabinet. In order to analyze the vibration characteristics of the cabinet under earthquake conditions, 3D finite element analysis was performed using ANSYS Workbench and SolidWorks. The modal analysis of the cabinet showed nine natural modes and natural frequencies, and showed the deformation and vibration of the cabinet panel for each mode. The frequencies of the 1st and 2nd modes, which are low modes, were 10% of the natural frequency value of the 9th mode, so it was easy to predict the possibility of resonance occurrence. The response spectrum due to the earthquake showed that the displacement, acceleration, and stress distribution of the cabinet had different behaviors in the x, y, and z directions, and especially showed very large values in the z direction. Although the vibration characteristics of the structure were evaluated using the modal characteristics and response spectrum for the cabinet, research on the application of a tuned mass damper is necessary for the dynamic characteristics process of the cabinet due to an earthquake and resonance reduction.
Abstract
In order to design a seismic safety of a cabinet affected by an earthquake, vibration analysis was performed using a model cabinet. In order to analyze the vibration characteristics of the cabinet under earthquake conditions, 3D finite element analysis was performed using ANSYS Workbench and SolidWorks. The modal analysis of the cabinet showed nine natural modes and natural frequencies, and showed the deformation and vibration of the cabinet panel for each mode. The frequencies of the 1st and 2nd modes, which are low modes, were 10% of the natural frequency value of the 9th mode, so it was easy to predict the possibility of resonance occurrence. The response spectrum due to the earthquake showed that the displacement, acceleration, and stress distribution of the cabinet had different behaviors in the x, y, and z directions, and especially showed very large values in the z direction. Although the vibration characteristics of the structure were evaluated using the modal characteristics and response spectrum for the cabinet, research on the application of a tuned mass damper is necessary for the dynamic characteristics process of the cabinet due to an earthquake and resonance reduction.
참고문헌 (6)
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- S. Lee, "Effect of the condition of in-cabinet equipment in single door electrical cabinet on seismic performance", Journal of the Korean Society for Advanced Composite Structures, 14(1) (2023)
- D. W. Yun, "Seismic behavior characteristics analysis of a cabinet model via experimental and numerical studies", Journal of the Korean Society for Advanced Composite Structures, 15(4), pp.24~31 (2024)
- S. M. Lee, "Advances in mechanical engineering evaluation of anchorage performance of the switchboard cabinet under seismic loading condition", Advances in Mechanical Engineering, 12(5), pp.1~12 (2020)
- S. Lee, "In-cabinet response spectrum comparison of battery charger by numerical analysis and shaking table test", Transactions of the Korean Society of Pressure Vessels and Piping, 15(1), pp.53~61 (2019)
- H. Son, "Dynamic characteristics of double-door electrical cabinet by 3D finite element analysis model", Journal of the Korean Society for Advanced Composite Structures, 11(5), pp.60~66 (2020)