Daraio C, Nesterenko V F, Herbold E B, Jin S
Materials Science and Engineering Program, University of California at San Diego, La Jolla, California 92093-0418, USA.
Phys Rev Lett. 2006 Feb 10;96(5):058002. doi: 10.1103/PhysRevLett.96.058002. Epub 2006 Feb 9.
We report the first experimental observation of impulse confinement and the disintegration of shock and solitary waves in one-dimensional strongly nonlinear composite granular materials. The chains consist of alternating ensembles of beads with high and low elastic moduli (more than 2 orders of magnitude difference) of different masses. The trapped energy is contained within the "softer" sections of the composite chain and is slowly released in the form of weak, separated pulses over an extended period of time. This effect is enhanced by using a specific group assembly and precompression.
我们报告了在一维强非线性复合颗粒材料中首次对脉冲约束以及激波和孤立波解体进行的实验观察。这些链由不同质量、具有高和低弹性模量（相差超过2个数量级）的珠子交替组合而成。捕获的能量包含在复合链的“较软”部分内，并在很长一段时间内以微弱、分离的脉冲形式缓慢释放。通过使用特定的组装配和预压缩，这种效应得到了增强。
