Study on the Nonlinear Characteristics of a Rotating Flexible Blade with Dovetail Interface Feature
A dynamic model is proposed in this paper for analyzing the nonlinear characteristics of a flexible blade. The dynamical equation of motion for a rotational flexible blade in a centrifugal force field is established based on the finite element method. A macro-stick-slip mechanical model of dry frict...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2018/4923898 |
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| _version_ | 1832567146469654528 |
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| author | Chaofeng Li Zengchuang Shen Bingfu Zhong Bangchun Wen |
| author_facet | Chaofeng Li Zengchuang Shen Bingfu Zhong Bangchun Wen |
| author_sort | Chaofeng Li |
| collection | DOAJ |
| description | A dynamic model is proposed in this paper for analyzing the nonlinear characteristics of a flexible blade. The dynamical equation of motion for a rotational flexible blade in a centrifugal force field is established based on the finite element method. A macro-stick-slip mechanical model of dry friction is established to simulate the constraint condition of the flexible blade. The combined motion of the external excitation and friction produces a piecewise linear vibration which is actually nonlinear. The numerical integration method is employed to calculate the vibration reduction characteristics of the nonlinear constrained rotating blade. The results show that the nonlinear dry friction force produced by the dovetail interface plays an important role in vibration reduction. And the effect of dry friction vibration reduction is significant when the rotating speed is slow or the friction coefficient is small. Besides, the magnitude of external excitation also has a great impact on the state of the friction. Therefore, some relevant experimental researches should be done in the future. |
| format | Article |
| id | doaj-art-145ac0b7011345479d1e8a97912b8aed |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-145ac0b7011345479d1e8a97912b8aed2025-02-03T01:02:11ZengWileyShock and Vibration1070-96221875-92032018-01-01201810.1155/2018/49238984923898Study on the Nonlinear Characteristics of a Rotating Flexible Blade with Dovetail Interface FeatureChaofeng Li0Zengchuang Shen1Bingfu Zhong2Bangchun Wen3School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, ChinaSchool of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, ChinaSchool of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, ChinaSchool of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, ChinaA dynamic model is proposed in this paper for analyzing the nonlinear characteristics of a flexible blade. The dynamical equation of motion for a rotational flexible blade in a centrifugal force field is established based on the finite element method. A macro-stick-slip mechanical model of dry friction is established to simulate the constraint condition of the flexible blade. The combined motion of the external excitation and friction produces a piecewise linear vibration which is actually nonlinear. The numerical integration method is employed to calculate the vibration reduction characteristics of the nonlinear constrained rotating blade. The results show that the nonlinear dry friction force produced by the dovetail interface plays an important role in vibration reduction. And the effect of dry friction vibration reduction is significant when the rotating speed is slow or the friction coefficient is small. Besides, the magnitude of external excitation also has a great impact on the state of the friction. Therefore, some relevant experimental researches should be done in the future.http://dx.doi.org/10.1155/2018/4923898 |
| spellingShingle | Chaofeng Li Zengchuang Shen Bingfu Zhong Bangchun Wen Study on the Nonlinear Characteristics of a Rotating Flexible Blade with Dovetail Interface Feature Shock and Vibration |
| title | Study on the Nonlinear Characteristics of a Rotating Flexible Blade with Dovetail Interface Feature |
| title_full | Study on the Nonlinear Characteristics of a Rotating Flexible Blade with Dovetail Interface Feature |
| title_fullStr | Study on the Nonlinear Characteristics of a Rotating Flexible Blade with Dovetail Interface Feature |
| title_full_unstemmed | Study on the Nonlinear Characteristics of a Rotating Flexible Blade with Dovetail Interface Feature |
| title_short | Study on the Nonlinear Characteristics of a Rotating Flexible Blade with Dovetail Interface Feature |
| title_sort | study on the nonlinear characteristics of a rotating flexible blade with dovetail interface feature |
| url | http://dx.doi.org/10.1155/2018/4923898 |
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