Experimental and numerical cross-correlated modal analysis of the floor structure dynamics in a thermal power plant
Abstract
This article presents search methodology after the cause of excessive floor vibrations in a thermal power plant control room. The floor structure is a composition of a steel grillage and concrete slabs at 12 m level above soil. It was detected that floor vibration severity exceeds the threshold of the permitted rate. After full scale measurements are conducted on site, the results are arranged versus time and frequency domain. In parallel to site measurements a 3D modal analysis is performed in ANSYS. The outcome is a set of modal frequencies and modal shapes. Cross-correlated analytical and experimental analysis formed a true picture of the excitation, response and their mutual interaction. The obtained results and appropriate conclusions had profiled a remedy strategy to mitigate the severity of the floor vibration.
Keywords:
Vibrations / Modal analysis / Finite element methodSource:
Structural Integrity and Life, 2015, 15, 1, 31-37Publisher:
- Institut za ispitivanje materijala, Beograd
Funding / projects:
- Developed new methods for diagnosis and examination mechanical structures (RS-MESTD-Technological Development (TD or TR)-35040)
- Micromechanical criteria of damage and fracture (RS-MESTD-Basic Research (BR or ON)-174004)
Collections
Institution/Community
Inovacioni centarTY - JOUR AU - Veg, Emil AU - Sedmak, Aleksandar AU - Gubeljak, Nenad PY - 2015 UR - https://machinery.mas.bg.ac.rs/handle/123456789/2116 AB - This article presents search methodology after the cause of excessive floor vibrations in a thermal power plant control room. The floor structure is a composition of a steel grillage and concrete slabs at 12 m level above soil. It was detected that floor vibration severity exceeds the threshold of the permitted rate. After full scale measurements are conducted on site, the results are arranged versus time and frequency domain. In parallel to site measurements a 3D modal analysis is performed in ANSYS. The outcome is a set of modal frequencies and modal shapes. Cross-correlated analytical and experimental analysis formed a true picture of the excitation, response and their mutual interaction. The obtained results and appropriate conclusions had profiled a remedy strategy to mitigate the severity of the floor vibration. PB - Institut za ispitivanje materijala, Beograd T2 - Structural Integrity and Life T1 - Experimental and numerical cross-correlated modal analysis of the floor structure dynamics in a thermal power plant EP - 37 IS - 1 SP - 31 VL - 15 UR - https://hdl.handle.net/21.15107/rcub_machinery_2116 ER -
@article{ author = "Veg, Emil and Sedmak, Aleksandar and Gubeljak, Nenad", year = "2015", abstract = "This article presents search methodology after the cause of excessive floor vibrations in a thermal power plant control room. The floor structure is a composition of a steel grillage and concrete slabs at 12 m level above soil. It was detected that floor vibration severity exceeds the threshold of the permitted rate. After full scale measurements are conducted on site, the results are arranged versus time and frequency domain. In parallel to site measurements a 3D modal analysis is performed in ANSYS. The outcome is a set of modal frequencies and modal shapes. Cross-correlated analytical and experimental analysis formed a true picture of the excitation, response and their mutual interaction. The obtained results and appropriate conclusions had profiled a remedy strategy to mitigate the severity of the floor vibration.", publisher = "Institut za ispitivanje materijala, Beograd", journal = "Structural Integrity and Life", title = "Experimental and numerical cross-correlated modal analysis of the floor structure dynamics in a thermal power plant", pages = "37-31", number = "1", volume = "15", url = "https://hdl.handle.net/21.15107/rcub_machinery_2116" }
Veg, E., Sedmak, A.,& Gubeljak, N.. (2015). Experimental and numerical cross-correlated modal analysis of the floor structure dynamics in a thermal power plant. in Structural Integrity and Life Institut za ispitivanje materijala, Beograd., 15(1), 31-37. https://hdl.handle.net/21.15107/rcub_machinery_2116
Veg E, Sedmak A, Gubeljak N. Experimental and numerical cross-correlated modal analysis of the floor structure dynamics in a thermal power plant. in Structural Integrity and Life. 2015;15(1):31-37. https://hdl.handle.net/21.15107/rcub_machinery_2116 .
Veg, Emil, Sedmak, Aleksandar, Gubeljak, Nenad, "Experimental and numerical cross-correlated modal analysis of the floor structure dynamics in a thermal power plant" in Structural Integrity and Life, 15, no. 1 (2015):31-37, https://hdl.handle.net/21.15107/rcub_machinery_2116 .