Abstract
In order to explore the anti-explosion protection performance of macroscopic negative Poisson's ratio grillage structure subjected to underwater contact explosion load, and to grasp the influence law of negative Poisson's ratio cell design parameters on the anti-explosion performance of structures, the anti-explosion deformation and failure process of stiffened plate and macroscopic negative Poisson's ratio structure is simulated and analyzed. The arbitrary Euler–Lagrange method is used to calculate and compare the deformation and failure of stiffened plate and macro-negative Poisson's ratio structure under underwater contact explosion load, on this basis, by changing the design parameters of negative Poisson's ratio cell, the influence of each parameter on the anti-explosion performance of the grillage structure is studied. The results show that: under the action of underwater contact explosion load, the blast resistance of macroscopic negative Poisson's ratio grillage structure with equal weight and same space is better than that of stiffened-plate structure. The anti-explosion performance of macroscopic negative Poisson's ratio grillage structure generally becomes stronger with the increase of the number of cells vertically/transversely, but at the same time the weight of the structure will be relatively increased. If the weight of the structure is increased, the anti-explosion performance can be improved more by increasing the number of cells vertically. If the weight of the structure is decreased, the blast resistance can be improved more. If the weight of the structure is decreased, the explosion resistance performance can be reduced less by enlarging the cell size. The research results can provide reference for the anti-explosion protection design of macroscopic negative Poisson’s ratio grillage structure.
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Wei, X., Han, D., Chuangchuang, L., **gbo, X., Fan, Y., Jianhua, L. (2024). Research on Underwater Contact Explosion Performance of Macroscopic Negative Poisson’s Ratio Grillage Structure. In: Li, S. (eds) Computational and Experimental Simulations in Engineering. ICCES 2023. Mechanisms and Machine Science, vol 143. Springer, Cham. https://doi.org/10.1007/978-3-031-42515-8_61
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DOI: https://doi.org/10.1007/978-3-031-42515-8_61
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