Journal
COMPOSITES PART B-ENGINEERING
Volume 171, Issue -, Pages 192-203Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2019.04.044
Keywords
Honeycomb; Hybrid; Mechanical properties; Finite element analysis (FEA); Buckling; Energy absorption
Funding
- National Natural Science Foundation of China [11702326, 11802221]
- Chinese Postdoctoral Science Foundation [2018M633493]
- Postdoctoral Scientific Research Project of Shaanxi Province [2017BSHYDZZ74]
- Open Project Program of the State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University [SV2016-KF-22]
- Pre-research project of Department of Basic Sciences, Air Force Engineering University [YNJC19070602]
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Aluminum honeycombs are widely applied in weight sensitive applications, increasing their specific strength and energy absorption capacity are rather important. Thin-walled metallic tube was used to enhance the mechanical properties of aluminum honeycomb and formed a novel tube-reinforced honeycomb structure. Its compressive and three-point bending performances were studied experimentally and numerically. Due to tube filling, the specific compressive strength, elastic modulus and energy absorption have been increased by 16%, 26% and 73%, and the specific bending load and stiffness increased by 42% and 62% respectively. The strengthen mechanism study indicated that the sum of tube and honeycomb caused the increase of compressive properties, and aluminum tube filling changed the stress distribution and expanded the stress concentration region which led to a transformation of bending failure mode. The present reinforcement method will make honeycomb more competitive in light-weight structure applications.
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