Abstract
Numerical simulation and experiment were applied to study the dynamic response of aluminum honeycomb sandwich plate subjected to the impact by flying spear as well as the the proper velocity of the flying spear impacting on the plate. The deformation mode and damage form of the aluminum honeycomb sandwich plate were obtained. Moreover, the proper velocity of the flying spear is around 40m/s~50m/s. It is confirmed that The deformation area of the upper and lower panels decreases with the increase of the impact velocity, whereas the buckling angle of the panel increases with the increase of the impact velocity. The damage forms of the aluminum honeycomb cell are collapse and buckling sequentially from the impact point to the surrounding. In addition, The collapse area of the honeycomb cells increases with the increase of the maximum diameter of the flying spear and the range of buckling decreases with the increase of impact velocity. The experimental results are in good agreement with the simulation results.
Highlights
The aluminum honeycomb sandwich plate is widely used in aviation, aerospace, shipbuilding, automobile, wind energy system, rail locomotives and other industrial fields due to its excellent energy absorption function, high specific strength and low density[1,2,3]
Based on the flying spear capture system, in this paper we studied the dynamic response of aluminum honeycomb sandwich plate which is applied to satellite under the impact of flying spear
Petal shaped perforations were produced on the lower panels of the aluminum honeycomb sandwich plates, When the impact velocity is 60m/s, the diameter of buckling plastic deformation zone on the upper panel is 34mm and that on the lower panel is 26mm; whereas when the impact velocity is 90m/s, the diameter of buckling plastic deformation zone on the upper panel is 32mm, that on the lower panel is 24mm; buckling deformation area on the upper and lower panel shows a decreasing trend as the impact velocity increases
Summary
The aluminum honeycomb sandwich plate is widely used in aviation, aerospace, shipbuilding, automobile, wind energy system, rail locomotives and other industrial fields due to its excellent energy absorption function, high specific strength and low density[1,2,3]. The dynamic response and deformation of aluminum honeycomb sandwich plates with different thickness under the explosive load were studied by S Li, and the numerical simulation was carried out with LS-DYNA[8]. Operational satellite vital for mankind infrastructure are threatened to be destroyed by space debris. Based on the flying spear capture system, in this paper we studied the dynamic response of aluminum honeycomb sandwich plate which is applied to satellite under the impact of flying spear. Through experiment and numerical simulation, The deformation mode and damage form of aluminum honeycomb sandwich plate and the impact velocity of the correct action of flying spear were obtained, which providing theoretical and experimental basis for further improvement of the flying spear capture system.
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