孤立波在一维带电颗粒链中的传播  

Solitary waves propagating in a one-dimensional charged granular chain

作　　者：孙建安[1] 李烈娟 李晓霖 杨雪滢 石玉仁[1] SUN Jian-an;LI Lie-juan;LI Xiao-lin;YANG Xue-ying;SHI Yu-ren(College of Physics and Electronic Engineering,Northwest Normal University,Lanzhou 730070,Gansu,China)

机构地区：[1]西北师范大学物理与电子工程学院,甘肃兰州730070

出　　处：《西北师范大学学报（自然科学版）》2018年第6期42-46,共5页Journal of Northwest Normal University(Natural Science)

基　　金：国家自然科学基金资助项目(11565021);西北师范大学青年教师科研能力提升计划资助项目(NWNU-LKQN-16-3)

摘　　要：对孤立波在一维带电颗粒链中的传播进行了数值研究.结果表明,颗粒所带电荷量越大、杨氏模量越大或阻尼系数越小,产生的孤立波振幅越大.随着时间增加,孤立波振幅呈指数式衰减.颗粒所带电量及阻尼系数对衰减率具有明显影响,而杨氏模量的影响则相对较小.The propagation characteristics of solitary waves in a one-dimensional charged granular chain have been investigated numerically.The results show that the more charge quantity,the larger the amplitude of the solitary waves,as well as the Young s modulus of the particles.However,weaker damping coefficient lead it larger.The amplitude of the solitary wave decays exponentially as time goes.It is also found that the charge quantity of particles and the damping coefficient affect the attenuation rate of the amplitudes significantly,but the influence of the Young s modulus is not obvious.

关 键 词：带电颗粒链 孤立波 数值模拟 

分 类 号：O343.5[理学—固体力学]