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Mechanics of Advanced Materials and Structures Volume 29, 2022 - Issue 18
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Original Articles

Investigation on the indentation mechanical performance of aluminum honeycombs

Ji Qiua College of Aeronautics and Astronautics, Taiyuan University of Technology, Taiyuan, ChinaView further author information
,
Zai Wangb Shanxi Key Laboratory of Material Strength and Structural Impact, College of Mechanical and Vehicle Engineering, Taiyuan University of Technology, Taiyuan, ChinaView further author information
,
Tao Jinb Shanxi Key Laboratory of Material Strength and Structural Impact, College of Mechanical and Vehicle Engineering, Taiyuan University of Technology, Taiyuan, ChinaCorrespondence[email protected] [email protected]
View further author information
,
Mengxue Jiaob Shanxi Key Laboratory of Material Strength and Structural Impact, College of Mechanical and Vehicle Engineering, Taiyuan University of Technology, Taiyuan, ChinaView further author information
,
Xin Lib Shanxi Key Laboratory of Material Strength and Structural Impact, College of Mechanical and Vehicle Engineering, Taiyuan University of Technology, Taiyuan, China;c National Laboratory of Solid State Microstructures and College of Engineering and Applied Science, Nanjing University, Nanjing, ChinaView further author information
,
Xuefeng Shub Shanxi Key Laboratory of Material Strength and Structural Impact, College of Mechanical and Vehicle Engineering, Taiyuan University of Technology, Taiyuan, ChinaCorrespondence[email protected] [email protected]
View further author information
&
Fei Yangd School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, ChinaView further author information
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Pages 2607-2616 | Received 30 Oct 2020, Accepted 01 Jan 2021, Published online: 12 Jan 2021
 
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Abstract

Quasi-static indentation tests were conducted to characterize the mechanical behavior of honeycombs. The local failure mechanisms of honeycombs with different relative density were discussed in detail. Results showed that the spread area of tearing deformations increases with increasing relative density and that difference in the neatness of tearing edges are obvious under different indenter shapes and sizes. The effects of indenter geometry on the plateau force and energy absorption of the honeycombs were analyzed. The tear energy of the specimens was determined, and an empirical formula was proposed to describe the relationship of energy absorption with indenter geometry.

Additional information

Funding

The authors would like to thank the National Natural Science Foundation of China (Grant Nos. 11772215, 11772217, 12072079, 11802199).

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