A semi-analytical method to compute acoustic nonlinearity parameter of Cu,Ag and Au

作     者：Zi-Mu Chen Zheng Zhang Zi-Mu Chen;Zheng Zhang

作者机构：School of Materials Science and EngineeringBeihang UniversityBeijing 100191China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2023年第42卷第3期

页      面：1050-1055页

核心收录：

学科分类：0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 0702[理学-物理学] 

基　　金：financially supported by the National Sci-Tech Support Plan(No.2015BAF06B01) 

主　　题：Nondestructive testing Semi-analytical Acoustic nonlinearity parameter Molecular static simulation 

摘      要：In this paper,a semi-analytical method was proposed to evaluate the acoustic nonlinearity parameter for single crystals of Cu,Ag and *** acoustic nonlinearity parameter can be derived analytically by general expressions in terms of the interatomic potentials with the distances between each pair of atoms in these transition *** evaluate the acoustic nonlinearity parameter,one needs to conduct one step molecular static simulation and obtain the equilibrium positions of all the ***,based on this method,numerical experiments with molecular dynamic code LAMMPS were given to compute the acoustic nonlinearity parameter of Cu,Ag and *** illustrate the validity of these expressions,comparison was made between calculation results and data in the *** agreement is *** of the analytical nature of this method,it provides a fundamental understanding of the nonlinear elastic behavior of these transition metals.