Design of quadrilateral zero-Poisson's ratio metamaterial and its application in ship explosion-proof hatch door

Abstract

Most structures with Zero Poisson's Ratio(ZPR) are two-dimensional structures, and three-dimensional zero Poisson's ratio structures are few. In this paper, a new three-dimensional zero Poisson's ratio structure was designed and applied to ship explosion-proof cabin doors. The proposed quadrilateral zero-Poisson's ratio structure exhibits zero-Poisson's ratio effect in both directions. The influence of geometric dimensions on the mechanical properties of the structure was analyzed by finite element software. The results show that with the decrease of B-bar length, the structural volume decreases, but the stiffness and strength increase. The maximum total deformation of the structure decreases from 3.58 mm to 0.14 mm. At the same time, the frame position of the structure also affects the mechanical properties of the structure. The results show that under the same external load, the stiffness and strength of the upper quadrilateral structure increase when the volume decreases, and the maximum value of total deformation differs by 44%. The designed quadrilateral zero Poisson's ratio structure was applied to the explosion-proof door, and compared with the foam aluminum door with the same quality. The results show that the strain energy of the core layer with zero Poisson's ratio was 5.6 times that of the aluminum foam core layer. Considering the clogging and sealing of the door body, zero Poisson's ratio structure is more suitable for the application of explosion-proof hatch doors on ships.