舰艇新型宏观负泊松比效应蜂窝舷侧防护结构

A novel auxetic broadside defensive structure for naval ships

提出一种具有宏观负泊松比效应的新型蜂窝舷侧防护结构,通过对负泊松比效应蜂窝胞元特殊结构构型设计,实现中等弹速下良好抗爆抗冲击性能。利用有限元动力学分析软件,研究鱼雷或导弹水下对舷侧防护结构的撞击侵入和穿透过程,对比研究了不同蜂窝构型、材料、胞元尺寸和胞壁厚度对舷侧结构抗冲击性能的影响。结果表明,蜂窝防护结构具有良好的抗冲击性能,负泊松比蜂窝构型较正泊松比蜂窝构型抗冲击性能更优。

Broadside defensive structure is important for naval vessels to maintain vitality. A novel broadside defensive structure with macro negative Poisson＇s ratio is proposed to achieve higher anti- shock and anti-blast performance by design of auxetic honeycomb configuration. The process of an an- ti-ship missile impinging on and penetrating broadside structure is simulated by nonlinear finite ele- ment software. Effects of different design parameters on broadside structure, like auxetic honeycomb configurations, materials, sizes and thickness of honeycomb cell, are studied and compared. Numeri- cal results indicate that counter-impingement capacity can be improved by adoption of auxetic broad- side structure, and honeycomb cell with negative Poisson^s ratio is better than that of common honey- comb cell on anti-blast performance.