期刊
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
卷 -, 期 -, 页码 -出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/15376494.2022.2118405
关键词
Energy absorption; bioinspired structures; lateral loading; foam-filled structures; graded structures
类别
资金
- National Natural Science Foundation of China [52078152, 12002095]
- General Program of Guangzhou Science and Technology Plan [202102021113]
- Guangzhou Government-University Union Fund [202201020532]
This article proposes a biomimetic multilayer foam-filled structure (BMFS) and investigates its lateral compression performance through experimental and numerical analyses. The results show that BMFS exhibits a more advantageous sequential collapse deformation pattern for practical use.
This article proposes a biomimetic multilayer foam-filled structure (BMFS) that mimics the microstructural characteristics of biological structures such as human bone and whale baleen. The lateral compression performance of such structures is investigated using experimental and numerical analyses. The proposed structure consists of three layers of aluminum foam with different densities filled in several concentric circular aluminum tubes. The test includes a solid design (Design-1) and a hollow design (Design-2). A series of quasi-static compression tests and finite element simulations are conducted, and the results show that BMFS exhibits a more advantageous sequential collapse deformation pattern for practical use. An energy absorption analysis of each layer shows that the energy absorption ratio of the foam layer reaches 85%. Comparing Models 1-3 of the two designs shows that the energy efficiency decreases, and the work efficiency increases, as the foam density increases. In addition, the interaction between the tubes and foams enhances the energy absorption properties of the structure. The parameter study shows that the energy absorption characteristics of Design-2 are insensitive to the diameter of the tube. The SEA of Design-1 increases with the thickness of Tube-1.
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