Mechanical Response of All-composite Pyramidal Lattice Truss Core Sandwich Structures

Abstract

Abstract: The mechanical performance of an all-composite pyramidal lattice truss core sandwich structure was investigated both theoretically and experimentally. Sandwich structures were fabricated with a hot compression molding method using carbon fiber reinforced composite T700/3234. The out-of-plane compression and shear tests were conducted. Experimental results showed that the all-composite pyramidal lattice truss core sandwich structures were more weight efficient than other metallic lattice truss core sandwich structures. Failure modes revealed that node rupture dominated the mechanical behavior of sandwich structures.

Key words: Sandwich structures, Pyramidal truss, Composite, Mechanical properties

Ming Li, Linzhi Wu, Li Ma, Bing Wang, Zhengxi Guan. Mechanical Response of All-composite Pyramidal Lattice Truss Core Sandwich Structures[J]. J Mater Sci Technol, 2011, 27(6): 570-576.

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