Experimental Verification of the Elastic Response in a Numeric Model of a Composite Propeller Blade with Bend Twist Deformation
Adaptive composite propeller blades showing bend twist behaviour have received increasing interest from hydrodynamic and structural engineers. When exposed to periodic loading conditions, such propellers can be designed to have higher energy efficiency and emit less noise and vibration than conventi...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-10-01
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| Series: | Polymers |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4360/13/21/3766 |
| _version_ | 1797511904498810880 |
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| author | Sondre Østli Rokvam Nils Petter Vedvik Lukas Mark Eivind Rømcke Jon Schawlann Ølnes Luca Savio Andreas Echermeyer |
| author_facet | Sondre Østli Rokvam Nils Petter Vedvik Lukas Mark Eivind Rømcke Jon Schawlann Ølnes Luca Savio Andreas Echermeyer |
| author_sort | Sondre Østli Rokvam |
| collection | DOAJ |
| description | Adaptive composite propeller blades showing bend twist behaviour have received increasing interest from hydrodynamic and structural engineers. When exposed to periodic loading conditions, such propellers can be designed to have higher energy efficiency and emit less noise and vibration than conventional propellers. This work describes a method to produce an adaptive composite propeller blade and how a point load experiment can verify the predicted elastic response in the blade. A 600 mm-long hollow full-size blade was built and statically tested in the laboratory. Finite element modelling predicted a pitch angle change under operational load variable loads of 0.55°, a geometric change that notably compensates for the load cases. In the laboratory experiment, the blade was loaded at two points with increasing magnitude. The elastic response was measured with digital image correlation and strain gauges. Model predictions and experimental measurements showed the same deformation patterns, and the twist angle agreed within 0.01 degrees, demonstrating that such propellers can be successfully built and modelled by finite element analysis. |
| first_indexed | 2024-03-10T05:54:32Z |
| format | Article |
| id | doaj.art-17942540d83c434eb2fedaa7aa350f3c |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T05:54:32Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-17942540d83c434eb2fedaa7aa350f3c2023-11-22T21:28:23ZengMDPI AGPolymers2073-43602021-10-011321376610.3390/polym13213766Experimental Verification of the Elastic Response in a Numeric Model of a Composite Propeller Blade with Bend Twist DeformationSondre Østli Rokvam0Nils Petter Vedvik1Lukas Mark2Eivind Rømcke3Jon Schawlann Ølnes4Luca Savio5Andreas Echermeyer6Department of Mechanical and Industrial Engineering (MTP), Norwegian University of Science and Technology (NTNU), 7491 Trondheim, NorwayDepartment of Mechanical and Industrial Engineering (MTP), Norwegian University of Science and Technology (NTNU), 7491 Trondheim, NorwayDepartment of Mechanical and Industrial Engineering (MTP), Norwegian University of Science and Technology (NTNU), 7491 Trondheim, NorwayDepartment of Mechanical and Industrial Engineering (MTP), Norwegian University of Science and Technology (NTNU), 7491 Trondheim, NorwayDepartment of Mechanical and Industrial Engineering (MTP), Norwegian University of Science and Technology (NTNU), 7491 Trondheim, NorwaySINTEF Ocean, Otto Nielsens vei 10, 7052 Trondheim, NorwayDepartment of Mechanical and Industrial Engineering (MTP), Norwegian University of Science and Technology (NTNU), 7491 Trondheim, NorwayAdaptive composite propeller blades showing bend twist behaviour have received increasing interest from hydrodynamic and structural engineers. When exposed to periodic loading conditions, such propellers can be designed to have higher energy efficiency and emit less noise and vibration than conventional propellers. This work describes a method to produce an adaptive composite propeller blade and how a point load experiment can verify the predicted elastic response in the blade. A 600 mm-long hollow full-size blade was built and statically tested in the laboratory. Finite element modelling predicted a pitch angle change under operational load variable loads of 0.55°, a geometric change that notably compensates for the load cases. In the laboratory experiment, the blade was loaded at two points with increasing magnitude. The elastic response was measured with digital image correlation and strain gauges. Model predictions and experimental measurements showed the same deformation patterns, and the twist angle agreed within 0.01 degrees, demonstrating that such propellers can be successfully built and modelled by finite element analysis.https://www.mdpi.com/2073-4360/13/21/3766compositespropellersbend-twistFEADICexperimental verification |
| spellingShingle | Sondre Østli Rokvam Nils Petter Vedvik Lukas Mark Eivind Rømcke Jon Schawlann Ølnes Luca Savio Andreas Echermeyer Experimental Verification of the Elastic Response in a Numeric Model of a Composite Propeller Blade with Bend Twist Deformation Polymers composites propellers bend-twist FEA DIC experimental verification |
| title | Experimental Verification of the Elastic Response in a Numeric Model of a Composite Propeller Blade with Bend Twist Deformation |
| title_full | Experimental Verification of the Elastic Response in a Numeric Model of a Composite Propeller Blade with Bend Twist Deformation |
| title_fullStr | Experimental Verification of the Elastic Response in a Numeric Model of a Composite Propeller Blade with Bend Twist Deformation |
| title_full_unstemmed | Experimental Verification of the Elastic Response in a Numeric Model of a Composite Propeller Blade with Bend Twist Deformation |
| title_short | Experimental Verification of the Elastic Response in a Numeric Model of a Composite Propeller Blade with Bend Twist Deformation |
| title_sort | experimental verification of the elastic response in a numeric model of a composite propeller blade with bend twist deformation |
| topic | composites propellers bend-twist FEA DIC experimental verification |
| url | https://www.mdpi.com/2073-4360/13/21/3766 |
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