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| Characteristics of Non-contact Wing Mechanics Loading Test Platform Based on Electromagnetic Field |
| Received:January 12, 2024 Revised:May 09, 2024 |
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| DOI：10.7643/issn.1672-9242.2024.07.014 |
| KeyWord:electromagnetic force wing mechanics loading flexible coil experimental platform dynamic loading complex wing shape |
| Author | Institution |
| LI Shanshan |
National Key Laboratory of Strength and Structural Integrity, Xi'an , China |
| CHEN Xianmin |
National Key Laboratory of Strength and Structural Integrity, Xi'an , China |
| WAN Gang |
National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing , China |
| PANG Baocai |
National Key Laboratory of Strength and Structural Integrity, Xi'an , China |
| LIANG Yuanbo |
National Key Laboratory of Strength and Structural Integrity, Xi'an , China |
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| Abstract: |
| The work aims to study and analyze the feasibility and application characteristics of non-contact wing surface loading based on the electromagnetic force. A drive coil made of multi turn copper wire was used to generate a strong magnetic field by passing a large current inside. The flexible coil was attached to the surface of the wing, and the current in the flexible coil interacted with the strong magnetic field to generate a relatively stable electromagnetic force on the surface of the wing. A simulation calculation model of electromagnetic force loading was established, and electromagnetic force characteristics of different coil structures were analyzed based on the model. A mechanical loading platform was designed and a test was carried out. Based on its electromagnetic force loading principle, the characteristics of using flexible coils and thin iron sheets were analyzed. Flexible coils produced less electromagnetic force than thin iron sheets, but had better linearity and controllability. Placing two driving coils up and down could generate a greater electromagnetic force, but the current direction of the two driving coils needed to be opposite. The electromagnetic force generated by the opposite current direction was 16 times stronger than that of the same direction. Reducing the distance between the driving coils and bringing the flexible coils closer to the driving coils could also significantly increase the electromagnetic force. A mechanical loading platform test was carried out, and the loading electromagnetic force of the flexible coil reached 57 N and could be loaded for 320 seconds. The feasibility of non-contact airfoil loading based on electromagnetic field is verified by experiments. The flexible coil is easily attached to the airfoil surface, which can provide some reference for the mechanical loading test of composite materials and complex airfoil. |
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