Hierarchical Corrugated Core Sandwich Panel Concepts

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A review of the recent trends on core structures and impact response of sandwich panels (2021, background): “For instance, the hierarchical corrugated truss core sandwich structure was proposed and analyzed, which studied the transverse compression and shear collapse mechanisms.(166) It was found that increasing the order of the hierarchy can increase the collapse strength with a limited relative density.”
The effects of hierarchy on the in-plane elastic properties of honeycombs (2011, methodology): “It is clear that none of the hierarchical honeycombs are as stiff as the first order conventional honeycomb, in contrast to previous studies (Lakes, 1993; Fan et al., 2008; Kooistra et al., 2007).”
The mechanics of composite corrugated structures: A review with applications in morphing aircraft (2015, background): “(d) Schematic of bi-directional corrugated core [26] (e) Schematic of corrugated bi directional core, [27] (f) Schematics of Hierarchical corrugated core sandwich panel [28]”
Plastic Deformation, Failure and Energy Absorption of Sandwich Structures with Metallic Cellular Cores (2010, background): “Based on the concept of corrugated plate core, a hierarchical corrugated structure has been developed [83].”