Study on the Damping Mechanism of the Shrouded Blade considering Contact Features
A dynamic model of the rotating shrouded blade is established, considering the shroud mass, the Coriolis force, and the centrifugal stiffening effect. And a macroslip model of dry friction with variable normal load is established to simulate the separation-contact-stick-slip state of the shroud. The...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2019/6594345 |
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| _version_ | 1832564704575225856 |
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| author | Chaofeng Li Tao Li Ruihuan Qiao Bangchun Wen |
| author_facet | Chaofeng Li Tao Li Ruihuan Qiao Bangchun Wen |
| author_sort | Chaofeng Li |
| collection | DOAJ |
| description | A dynamic model of the rotating shrouded blade is established, considering the shroud mass, the Coriolis force, and the centrifugal stiffening effect. And a macroslip model of dry friction with variable normal load is established to simulate the separation-contact-stick-slip state of the shroud. The Lagrangian equation is utilized to solve the differential motion equation, and the Galerkin method is used for discretization. The influence of shroud structure’s parameters such as rotational speed, contact angle, friction coefficient, clearance, and shroud position on the damping effect of the shroud is reviewed by means of amplitude-frequency response and energy through the Newmark-β numerical method. The results demonstrate that the damping effect of the shroud by contact is more obvious than by friction and the amplitude-frequency curve of the shrouded blade shows a strong hard nonlinear phenomenon. |
| format | Article |
| id | doaj-art-aefab3c1bfd347fe804f6350c95afbef |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-aefab3c1bfd347fe804f6350c95afbef2025-02-03T01:10:26ZengWileyShock and Vibration1070-96221875-92032019-01-01201910.1155/2019/65943456594345Study on the Damping Mechanism of the Shrouded Blade considering Contact FeaturesChaofeng Li0Tao Li1Ruihuan Qiao2Bangchun Wen3School of Mechanical Engineering & Automation, Northeastern University, Shenyang, Liaoning 110819, ChinaSchool of Mechanical Engineering & Automation, Northeastern University, Shenyang, Liaoning 110819, ChinaSchool of Mechanical Engineering & Automation, Northeastern University, Shenyang, Liaoning 110819, ChinaSchool of Mechanical Engineering & Automation, Northeastern University, Shenyang, Liaoning 110819, ChinaA dynamic model of the rotating shrouded blade is established, considering the shroud mass, the Coriolis force, and the centrifugal stiffening effect. And a macroslip model of dry friction with variable normal load is established to simulate the separation-contact-stick-slip state of the shroud. The Lagrangian equation is utilized to solve the differential motion equation, and the Galerkin method is used for discretization. The influence of shroud structure’s parameters such as rotational speed, contact angle, friction coefficient, clearance, and shroud position on the damping effect of the shroud is reviewed by means of amplitude-frequency response and energy through the Newmark-β numerical method. The results demonstrate that the damping effect of the shroud by contact is more obvious than by friction and the amplitude-frequency curve of the shrouded blade shows a strong hard nonlinear phenomenon.http://dx.doi.org/10.1155/2019/6594345 |
| spellingShingle | Chaofeng Li Tao Li Ruihuan Qiao Bangchun Wen Study on the Damping Mechanism of the Shrouded Blade considering Contact Features Shock and Vibration |
| title | Study on the Damping Mechanism of the Shrouded Blade considering Contact Features |
| title_full | Study on the Damping Mechanism of the Shrouded Blade considering Contact Features |
| title_fullStr | Study on the Damping Mechanism of the Shrouded Blade considering Contact Features |
| title_full_unstemmed | Study on the Damping Mechanism of the Shrouded Blade considering Contact Features |
| title_short | Study on the Damping Mechanism of the Shrouded Blade considering Contact Features |
| title_sort | study on the damping mechanism of the shrouded blade considering contact features |
| url | http://dx.doi.org/10.1155/2019/6594345 |
| work_keys_str_mv | AT chaofengli studyonthedampingmechanismoftheshroudedbladeconsideringcontactfeatures AT taoli studyonthedampingmechanismoftheshroudedbladeconsideringcontactfeatures AT ruihuanqiao studyonthedampingmechanismoftheshroudedbladeconsideringcontactfeatures AT bangchunwen studyonthedampingmechanismoftheshroudedbladeconsideringcontactfeatures |