Experimental and Numerical Investigation of Contact Parameters in a Dovetail Type of Blade Root Joints
This paper focuses on the contact characteristics of the blade root joints subjected to the dry friction damping under periodic excitation. The numerical method and experimental procedure are combined to trace the contact behavior in the nonlinear vibration conditions. In experimental procedure, a n...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-12-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/24/12008 |
| _version_ | 1797506744502452224 |
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| author | Hadi Dastani Daniele Botto Matteo Glorioso |
| author_facet | Hadi Dastani Daniele Botto Matteo Glorioso |
| author_sort | Hadi Dastani |
| collection | DOAJ |
| description | This paper focuses on the contact characteristics of the blade root joints subjected to the dry friction damping under periodic excitation. The numerical method and experimental procedure are combined to trace the contact behavior in the nonlinear vibration conditions. In experimental procedure, a novel excitation method alongside the accurate measurements is used to determine the frequencies of the blade under different axial loads. In numerical simulations, local behavior of contact areas is investigated using the reduction method as a reliable and fast solver. Subsequently, by using both experimental measurements and numerical outcomes in a developed code, the global stiffness matrix is calculated. This leads to find the normal and tangential stiffness in the contact areas of a dovetail blade root joints. The results indicate that the proposed method can provide an accurate quantitative assessment for investigation the dynamic response of the joints with focusing the contact areas. |
| first_indexed | 2024-03-10T04:37:11Z |
| format | Article |
| id | doaj.art-f65ac9a3dec4429f907c45b92b61a599 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T04:37:11Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-f65ac9a3dec4429f907c45b92b61a5992023-11-23T03:41:47ZengMDPI AGApplied Sciences2076-34172021-12-0111241200810.3390/app112412008Experimental and Numerical Investigation of Contact Parameters in a Dovetail Type of Blade Root JointsHadi Dastani0Daniele Botto1Matteo Glorioso2DIMEAS, Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Turin, ItalyDIMEAS, Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Turin, ItalyDIMEAS, Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Turin, ItalyThis paper focuses on the contact characteristics of the blade root joints subjected to the dry friction damping under periodic excitation. The numerical method and experimental procedure are combined to trace the contact behavior in the nonlinear vibration conditions. In experimental procedure, a novel excitation method alongside the accurate measurements is used to determine the frequencies of the blade under different axial loads. In numerical simulations, local behavior of contact areas is investigated using the reduction method as a reliable and fast solver. Subsequently, by using both experimental measurements and numerical outcomes in a developed code, the global stiffness matrix is calculated. This leads to find the normal and tangential stiffness in the contact areas of a dovetail blade root joints. The results indicate that the proposed method can provide an accurate quantitative assessment for investigation the dynamic response of the joints with focusing the contact areas.https://www.mdpi.com/2076-3417/11/24/12008contact stiffnessturbine bladedovetail jointsexperimentalreduction techniques |
| spellingShingle | Hadi Dastani Daniele Botto Matteo Glorioso Experimental and Numerical Investigation of Contact Parameters in a Dovetail Type of Blade Root Joints Applied Sciences contact stiffness turbine blade dovetail joints experimental reduction techniques |
| title | Experimental and Numerical Investigation of Contact Parameters in a Dovetail Type of Blade Root Joints |
| title_full | Experimental and Numerical Investigation of Contact Parameters in a Dovetail Type of Blade Root Joints |
| title_fullStr | Experimental and Numerical Investigation of Contact Parameters in a Dovetail Type of Blade Root Joints |
| title_full_unstemmed | Experimental and Numerical Investigation of Contact Parameters in a Dovetail Type of Blade Root Joints |
| title_short | Experimental and Numerical Investigation of Contact Parameters in a Dovetail Type of Blade Root Joints |
| title_sort | experimental and numerical investigation of contact parameters in a dovetail type of blade root joints |
| topic | contact stiffness turbine blade dovetail joints experimental reduction techniques |
| url | https://www.mdpi.com/2076-3417/11/24/12008 |
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