발전소 내 구조물 진동 제어를 위한 MR 유체가 적용된 동조질량감쇠기 설계 및 적용

• Published in: 한국CDE학회 논문집 Vol. 28; no. 3; pp. 326 - 334
• Main Authors: 송준한(Jun-Han Song), 이현섭(Hyeon-Seop Lee), 이홍기(Hong-Gi Lee), 백재호(Jae-Ho Baek)
• Format: Journal Article
• Language: Korean
• Published: (사)한국CDE학회 01.09.2023; 한국CDE학회
• Subjects: 기계공학; Pulverizer; Vibration; Tuned Mass Damper; Resonance; Beating effect; MR fluid; Modal Test
• ISSN: 2508-4003; 2508-402X
• DOI: 10.7315/CDE.2023.326

When several pulverizers operating simultaneously at the same rotational speed for coal pulveri- zation in a thermal plant, workers inside the nearby control structure complained of discomfort due to the vibration. Through structure and transmission path vibration measurement the phe- nomenon of vibration amplification in the structure due to resonance and the concentration of vibration energy in the roof due to structural characteristics were identified. To reduce the vibra- tion in the control room, the design of the main factors of the TMD(Tuned Mass Damper) was conducted. An analysis of the optimal mass, stiffness, and damping characteristics of the TMD was designed using a finite element analysis program ANSYS. MR(Magneto-Rheological) fluid was used for the damper of the TMD for the optimal vibration reduction effect considered to the site conditions. The optimal position of the TMD in the structure was selected, and the reduction effect was verified by conducting vibration monitoring before and after installing the vibration mitigation measures. KCI Citation Count: 1