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| Effects of lattice configuration on anti-bird impact performance of sandwich structures |
| YAN Jun1,2, ZHANG Chenguang1, SAI Yinfu1, WANG Fuhao1, HUO Sixu1, CHAI Xianghai3,4, YAN Kun5 |
| 1. State Key Lab of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, China;
2. Ningbo Research Institute, Dalian University of Technology, Ningbo 315016, China; 3. AVIC Commercial Aircraft Engine
Co., Ltd., Shanghai 200241, China; 4. Shanghai Branch, Chinese Aeronautical Establishment, Shanghai 200241, China;
5. School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China |
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Abstract Hollow sandwich blades are widely used in aero-engine design because of both lightweight and energy-absorbing properties. In this paper, the effect of four different lattice configurations on the bird strike resistance of the equivalent simulated parts of the infilled blade is investigated. The equivalent stiffness of the four lattice configurations is given by homogenization method. Then the lattice-filled curved plate model is established based on the modeling method of shape-following adaptive lattice-filled structure, and the lattice-filled curved plate structure is manufactured by 3D printing for bird strike tests and numerical simulations. Finally, the bird strike resistance of four different lattice-filled curved plate was analyzed from the viewpoint of deformation and energy absorption, and BCC has better resistance to both deformation in z-direction and in-plane y-direction creases and better energy absorption than other types of structures. Therefore, BCC has better bird strike resistance.
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Received: 07 November 2022
Published: 15 January 2024
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