六韧带手性蜂窝结构覆盖层的动态压缩行为研究

舰船湿表面敷设的吸能覆盖层能起到一定的抗冲击作用.利用显示动力学有限元软件Abaqus建立该结构的有限元分析模型,研究以超弹性材料为基底的六韧带手性蜂窝结构覆盖层的动态压缩行为,分析覆盖层在动态压缩过程中的变形特征、加速度、应力以及整体的能量吸收等物理参数随时间的变化特性.结果表明在相同载荷、不同冲击速度作用下覆盖层结构的宏观变形模式不同;随着初速度的增加,覆盖层结构的动态压缩行为以及能量吸收表现愈加明显.

A study of the dynamic compression behavior of hexagonal honeycomb layer

The energy-absorption layer coating the wet surface of ship is able to enhance the effect of anti-shock to some extent. This paper established the finite element analysis model of this structure by using display dynamic finite ele-ment software ABAQUS, studied dynamic compression behavior of six ligament chiral honeycomb structure coating layer based on the hyper elastic material, and analyzed the characteristics of coating layer physical parameters such as deformation characteristics, acceleration, stress and energy absorption of the whole which changed with time in the process of dynamic compression. The results show that under the function of same load and different impact velocity, coating layer gets different macroscopic deformation mode, and with the increase of initial velocity, dynamic compression behavior of the coating layer and the performance of energy absorption become more remarkable.