Study on Angular Free Vibration Stability and Parameters Influence of Dry Gas Seal Based on the Characteristic Equation
Based on Laplace transform and Hurwitz stability criterion, the system characteristic equation and algebraic stability criterion of the two degree-of-freedom angular free vibration of dry gas seal are derived. The effects of rotational inertia, stiffness and damping parameters on the angular free vi...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2022/7378999 |
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| _version_ | 1832552348192342016 |
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| author | Liming Teng Jinbo Jiang Xudong Peng Jiyun Li Simin Zheng |
| author_facet | Liming Teng Jinbo Jiang Xudong Peng Jiyun Li Simin Zheng |
| author_sort | Liming Teng |
| collection | DOAJ |
| description | Based on Laplace transform and Hurwitz stability criterion, the system characteristic equation and algebraic stability criterion of the two degree-of-freedom angular free vibration of dry gas seal are derived. The effects of rotational inertia, stiffness and damping parameters on the angular free vibration stability of dry gas seal are analyzed by using the root locus method and the concept of the closed-loop dominant pole. The results show that the constraint condition of rotational inertia is the most demanding of all stability conditions. Both the angular main damping and main stiffness are not simply the larger the better, but there are preferred values in the interval greater than the stability threshold. The approach of the absolute value of the cross coefficient to zero is beneficial to the suppression of angular free vibration. There is a threshold of rotational inertia, which makes the cross stiffness change from having only the lower limit value to both the upper and lower critical values at the same time. |
| format | Article |
| id | doaj-art-3552fc30a87e4790b24f6a4bf778eb6f |
| institution | Kabale University |
| issn | 1875-9203 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-3552fc30a87e4790b24f6a4bf778eb6f2025-02-03T05:58:55ZengWileyShock and Vibration1875-92032022-01-01202210.1155/2022/7378999Study on Angular Free Vibration Stability and Parameters Influence of Dry Gas Seal Based on the Characteristic EquationLiming Teng0Jinbo Jiang1Xudong Peng2Jiyun Li3Simin Zheng4College of Mechanical EngineeringCollege of Mechanical EngineeringCollege of Mechanical EngineeringCollege of Mechanical EngineeringCollege of Mechanical EngineeringBased on Laplace transform and Hurwitz stability criterion, the system characteristic equation and algebraic stability criterion of the two degree-of-freedom angular free vibration of dry gas seal are derived. The effects of rotational inertia, stiffness and damping parameters on the angular free vibration stability of dry gas seal are analyzed by using the root locus method and the concept of the closed-loop dominant pole. The results show that the constraint condition of rotational inertia is the most demanding of all stability conditions. Both the angular main damping and main stiffness are not simply the larger the better, but there are preferred values in the interval greater than the stability threshold. The approach of the absolute value of the cross coefficient to zero is beneficial to the suppression of angular free vibration. There is a threshold of rotational inertia, which makes the cross stiffness change from having only the lower limit value to both the upper and lower critical values at the same time.http://dx.doi.org/10.1155/2022/7378999 |
| spellingShingle | Liming Teng Jinbo Jiang Xudong Peng Jiyun Li Simin Zheng Study on Angular Free Vibration Stability and Parameters Influence of Dry Gas Seal Based on the Characteristic Equation Shock and Vibration |
| title | Study on Angular Free Vibration Stability and Parameters Influence of Dry Gas Seal Based on the Characteristic Equation |
| title_full | Study on Angular Free Vibration Stability and Parameters Influence of Dry Gas Seal Based on the Characteristic Equation |
| title_fullStr | Study on Angular Free Vibration Stability and Parameters Influence of Dry Gas Seal Based on the Characteristic Equation |
| title_full_unstemmed | Study on Angular Free Vibration Stability and Parameters Influence of Dry Gas Seal Based on the Characteristic Equation |
| title_short | Study on Angular Free Vibration Stability and Parameters Influence of Dry Gas Seal Based on the Characteristic Equation |
| title_sort | study on angular free vibration stability and parameters influence of dry gas seal based on the characteristic equation |
| url | http://dx.doi.org/10.1155/2022/7378999 |
| work_keys_str_mv | AT limingteng studyonangularfreevibrationstabilityandparametersinfluenceofdrygassealbasedonthecharacteristicequation AT jinbojiang studyonangularfreevibrationstabilityandparametersinfluenceofdrygassealbasedonthecharacteristicequation AT xudongpeng studyonangularfreevibrationstabilityandparametersinfluenceofdrygassealbasedonthecharacteristicequation AT jiyunli studyonangularfreevibrationstabilityandparametersinfluenceofdrygassealbasedonthecharacteristicequation AT siminzheng studyonangularfreevibrationstabilityandparametersinfluenceofdrygassealbasedonthecharacteristicequation |