doi: 10.3850/S201042862015001222

Experimental Investigation on Deformation and Damage of Metal Honeycomb Sandwich Plates Subjected to Blast Loading

Tao Wang^1,2, Qinghua Qin^1,a, Wenli Yu², Jintao Wang² and Yuling Wang^{2 1} State Key Laboratory for Strength and Vibration of Mechanical Structures,
School of Aerospace, Xi'an Jiaotong University, Xi'an 710049, China ^aqhqin@mail.xjteu.edu.cn ² Department of Engineering Physics, Xi'an Research Institute of High-Tech.,
Xi'an 710025, China

ABSTRACT

Dynamic deformation and damage of hexagonal aluminium honeycomb sandwich plates subjected to blast loading were investigated experimentally. Different loadings were achieved by changing the mass of Cyclotrimethylene trinitramine (RDX) explosive charge at the same standoff distance. The dynamic deformation and damage patterns of the sandwich plates were obtained and effect of the blast loadings was discussed. New deformation and damage patterns, such as cracking and breaking of the front face sheet, breaking and transverse compressing of the core and perforation of the rear face sheet were observed in experiments. The results show that the deflections of the rear face sheets of sandwich plates increase nearly linearly with blast loadings. The buckling and folding of cell foil of core increase as the blast loadings increase.

Keywords: Sandwich plate, Hexagonal aluminum honeycomb, Dynamic response, Blast loading, Deformation and Damage modes.

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