Solitary and shock waves in discrete strongly nonlinear double power-law materials
Solitary and shock waves in discrete strongly nonlinear double power-law materials
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DOI：
10.1063/1.2751592
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发表时间：
2007-06-25
影响因子：
4
通讯作者：
Nesterenko, V. F.
中科院分区：
文献类型：
--
作者：
Herbold, E. B.;Nesterenko, V. F.
提出了一种支持强非线性孤立波和冲击波的层流超材料，具有减缓冲击能量的能力。它由具有间歇性聚合物环形环的钢板组成，充当具有大允许应变的强非线性弹簧。压缩O形环的力-位移关系是通过两个幂函数关系相加来描述的，其结果是孤立波的速度和宽度与振幅有关。这种双重非线性允许将初始冲量分裂成三个独立的强非线性孤立波列。对特氟龙O形圈装配中的孤立波和激波进行了实验观测和数值分析。(C)2007年美国物理研究所。
A laminar metamaterial supporting strongly nonlinear solitary and shock waves with impact energy mitigating capabilities is presented. It consists of steel plates with intermittent polymer toroidal rings acting as strongly nonlinear springs with large allowable strain. The force-displacement relationship of a compressed o-ring is described by the addition of two power-law relationships resulting in a solitary wave speed and width depending on the amplitude. This double nonlinearity allows splitting of an initial impulse into three separate strongly nonlinear solitary wave trains. Solitary and shock waves are observed experimentally and analyzed numerically in an assembly with Teflon o-rings. (c) 2007 American Institute of Physics.