Nonreciprocal Head-on Collision Between Two Nonlinear Solitary Waves in Granular Metamaterials with an Interface

作     者：Qi Lu Yi-Ze Wang Qi Lu;Yi-Ze Wang

作者机构：Department of MechanicsTianjin UniversityTianjin 300350China 

出 版 物：《Acta Mechanica Solida Sinica》 (固体力学学报（英文版）)

年 卷 期：2022年第35卷第1期

页      面：139-151页

核心收录：

学科分类：08[工学] 080102[工学-固体力学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：the supports provided by the National Natural Science Foundation of China(Grant Nos.11922209 11991031 and 12021002) 

主　　题：Granular metamaterial Nonlinear solitary waves Head-on collision Interface Nonreciprocal properties 

摘      要：In this work,the head-on collision and transmission with nonreciprocal properties of opposite propagating solitary waves are studied,in which the interface between different granular chains is *** to the discontinuity of two periodic granular systems,the transmitted and reflected solitary waves are *** head-on collision appears at the interface and the reductive perturbation method is applied to derive the generated solitary *** to the derivation and numerical simulation,we can find that the transmitted and reflected solitary waves can propagate with the same speed when they locate at the same ***,the influences of both the arrangement and prestress are *** is found that the amplitude and velocity of solitary waves become larger because of a bigger prestress,which result in the nonreciprocal collision and transmission in the granular mechanical *** study is expected to be helpful for the design and application of elastic wave metamaterials and mechanical diodes with nonlinear solitary waves.