| METALS AND METAL MATRIX COMPOSITES |
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| Response on the Characteristics and Failure Mechanism of Aluminum Alloy Circular Corrugated Sandwich Panels Under Low Velocity Impact |
| DENG Yunfei1,*, AN Jingdan1, REN Guanghui2,WEI Gang1
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1 College of Aeronautical Engineering, Civil Aviation University of China, Tianjin 300300, China
2 State Owned Assets Management Office, Civil Aviation University of China, Tianjin 300300, China |
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Abstract In order to study the energy absorption characteristics, deformation and failure mechanism of aluminum alloy circular corrugated sandwich panel under low velocity impact, low velocity impact tests were carried out by using drop weight to reveal the influence of impact position and initial impact energy on the low velocity impact response characteristics of circular corrugated sandwich panel. The impact positions are the node and pedestal of corrugated sandwich panel, and the impact energy is in the range 120—400 J. The experimental results show that the dominant failure mode of the sandwich panel is tensile fracture failure, and the impact energy and position have significant effects on the dynamic load response of the sandwich panel. The maximum impact load of the sandwich panel increases with the increase of impact energy, and the maximum impact load of node is higher than that of pedestal, the difference between them decreases with the increase of impact energy. The impact load at the node of sandwich panel can reach the peak quickly, while the impact load at the pedestal needs a process to reach the peak.
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Published:
Online: 2023-01-03
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| Fund:Basic Scientific Research Business Fee Project of Central Universities for Civil Aviation University of China (3122021048). |
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2022, Vol. 36 
