Wet Modal Analyses of Various Length Coaxial Sump Pump Rotors with Acoustic-Solid Coupling
The dynamic characteristics of the rotor components were determined using a first-order modal model of the rotor components for various sump pump shaft lengths for actual working environments. By employing ANSYS-Workbench software, this paper uses a fluid-solid coupling analysis to calculate the rea...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2021/8823150 |
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| _version_ | 1832564488765702144 |
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| author | Guangjie Peng Zhuoran Zhang Ling Bai |
| author_facet | Guangjie Peng Zhuoran Zhang Ling Bai |
| author_sort | Guangjie Peng |
| collection | DOAJ |
| description | The dynamic characteristics of the rotor components were determined using a first-order modal model of the rotor components for various sump pump shaft lengths for actual working environments. By employing ANSYS-Workbench software, this paper uses a fluid-solid coupling analysis to calculate the reaction forces of the fluid on the rotor with results, which is then used in dry and wet modal analyses of the rotor parts to calculate the vibration modal characteristics with and without prestresses. The differences between the wet and dry modal characteristics were compared and investigated by ANSYS. The results show that increasing the sump pump shaft length reduces the first-order natural frequency of the prestressed rotor components. The structure also experiences stress stiffening, which is more obvious in the high-order modes. The natural frequency of the rotor in the wet mode is about 16% less than that in the dry mode for the various shaft lengths due to the added mass of the water on the surface which reduces the natural frequency. In the wet modal analysis, when the structure is in a different fluid medium, the influence of its modal distribution will also change, this is because the additional mass produced by the fluid medium of different density on the structure surface is different. Thus, the wet modal analysis of the rotor is important for more accurate dynamic analyses. |
| format | Article |
| id | doaj-art-94822fbcb26e45859566bd9788268a3f |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-94822fbcb26e45859566bd9788268a3f2025-02-03T01:10:54ZengWileyShock and Vibration1070-96221875-92032021-01-01202110.1155/2021/88231508823150Wet Modal Analyses of Various Length Coaxial Sump Pump Rotors with Acoustic-Solid CouplingGuangjie Peng0Zhuoran Zhang1Ling Bai2National Research Center of Pumps, Jiangsu University, Zhenjiang, Jiangsu 212013, ChinaNational Research Center of Pumps, Jiangsu University, Zhenjiang, Jiangsu 212013, ChinaNational Research Center of Pumps, Jiangsu University, Zhenjiang, Jiangsu 212013, ChinaThe dynamic characteristics of the rotor components were determined using a first-order modal model of the rotor components for various sump pump shaft lengths for actual working environments. By employing ANSYS-Workbench software, this paper uses a fluid-solid coupling analysis to calculate the reaction forces of the fluid on the rotor with results, which is then used in dry and wet modal analyses of the rotor parts to calculate the vibration modal characteristics with and without prestresses. The differences between the wet and dry modal characteristics were compared and investigated by ANSYS. The results show that increasing the sump pump shaft length reduces the first-order natural frequency of the prestressed rotor components. The structure also experiences stress stiffening, which is more obvious in the high-order modes. The natural frequency of the rotor in the wet mode is about 16% less than that in the dry mode for the various shaft lengths due to the added mass of the water on the surface which reduces the natural frequency. In the wet modal analysis, when the structure is in a different fluid medium, the influence of its modal distribution will also change, this is because the additional mass produced by the fluid medium of different density on the structure surface is different. Thus, the wet modal analysis of the rotor is important for more accurate dynamic analyses.http://dx.doi.org/10.1155/2021/8823150 |
| spellingShingle | Guangjie Peng Zhuoran Zhang Ling Bai Wet Modal Analyses of Various Length Coaxial Sump Pump Rotors with Acoustic-Solid Coupling Shock and Vibration |
| title | Wet Modal Analyses of Various Length Coaxial Sump Pump Rotors with Acoustic-Solid Coupling |
| title_full | Wet Modal Analyses of Various Length Coaxial Sump Pump Rotors with Acoustic-Solid Coupling |
| title_fullStr | Wet Modal Analyses of Various Length Coaxial Sump Pump Rotors with Acoustic-Solid Coupling |
| title_full_unstemmed | Wet Modal Analyses of Various Length Coaxial Sump Pump Rotors with Acoustic-Solid Coupling |
| title_short | Wet Modal Analyses of Various Length Coaxial Sump Pump Rotors with Acoustic-Solid Coupling |
| title_sort | wet modal analyses of various length coaxial sump pump rotors with acoustic solid coupling |
| url | http://dx.doi.org/10.1155/2021/8823150 |
| work_keys_str_mv | AT guangjiepeng wetmodalanalysesofvariouslengthcoaxialsumppumprotorswithacousticsolidcoupling AT zhuoranzhang wetmodalanalysesofvariouslengthcoaxialsumppumprotorswithacousticsolidcoupling AT lingbai wetmodalanalysesofvariouslengthcoaxialsumppumprotorswithacousticsolidcoupling |