改进的 Morse 势和冲击压缩  

MODIFIED MORSE POTENTIAL AND SHOCK COMPRESSION

作　　者：潘原生[1] 王继海[1] 

机构地区：[1]北京应用物理与计算数学研究所

出　　处：《爆炸与冲击》1997年第4期303-310,共8页Explosion and Shock Waves

基　　金：中国工程物理研究院基金

摘　　要：用分子动力学方法模拟凝聚介质中一维分子链上的激波传播，以得到与冲击压缩实验相一致的结果。通过比较分子链上的孤立波解与激波的实验结果，提出对分子间Ｍｏｒｓｅ作用势进行与考虑量子效应相一致的修正，从而使分子动力学模拟得到的激波Ｕｓ－Ｕｐ关系与实验结果在波后粒子速度达到声速的范围内一致。In order to obtain a result which is agreement with the shock compression experiment,molecular dynamical simulations of shock wave propagation in one dimensional chain are investigated in this paper.Comparing the soliton speed in the chain with the shock compression result,we propse a modifying Mores potential which is in accord with the considering quantum effect.Using this modifying Morse potential in MD simulation,we can well simulate the experimental result in a range when the particle velocity get to the sound velocigy.

关 键 词：分子动力学 激波 MORSE势 冲击压缩 一维分子链 

分 类 号：O354.5[理学—流体力学]