Open AccessSimulation of transmitting sound wave in one-dimensional easy-expanding medium
Author(s) -
Han Ru-Qu,
Shi Qing-Fan,
Guangping Sun
Publication year - 2005
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.54.2188
Subject(s) - elastic modulus , modulus , coupling (piping) , acoustics , limit (mathematics) , young's modulus , bulk modulus , physics , materials science , mechanics , mathematical analysis , condensed matter physics , composite material , thermodynamics , mathematics
A new model of medium is established,in which the elastic modulus is bigger when the sound wave is in the compressed area,while it is smaller in the expanding area.The strong nonlinear coupling effect occurs when the compressed wave and the expanding wave exist in the same area.The calculated results show that the coupling of compressed wave and expanding wave can result in the expanding of the system,which is related to the relative difference between the expanding elastic modulus and compressing elastic modulus.In addition,the results obtained from the elastic modulus of non_continuum are the same as the limit case of continuous elastic modulus.