Compression and low velocity impact response of wood-based sandwich panels with auxetic lattice core

Abstract The research determined the resistance to compression and low velocity impact of wood-based sandwich panels, face sheet made high-density fiber board, high pressure laminate, while its auxetic lattice core was by 3D printing using LayWood bio-composite filament. core's property (i.e. exhibiting negative Poisson's ratio) observed within planes parallel facings. ability particular types multilayer panels absorb energy also determined. Based on analysis obtained test results, it proven that denoted as B, with inclination angle cell ribs $${{\varphi }_{x}=\varphi }_{y}=65^\circ$$ φ x = y 65 ∘ , shows highest compressive strength. It dynamic load causes a very overload in board sheets. This results damage panel surface structure. Cells type B favorably minimize differences absorbed when different sheets value for impact. Taking into account amount energy, most attractive is D-type orthotropic characterized an $${\varphi }_{x}= 30^\circ {\varphi }_{y}=60^\circ$$ 30 , 60 . samples fiberboard increases significantly depending impactor's energy. For manufactured from high-pressure decreases.