ZHANG Xiao-li, LIN Shu-yu
(Institute of Applied Acoustics, Shaanxi Normal University, Xi′an 710062, Shaanxi, China)
Abstract:
Based on the wave equation of longitudinal vibration of variable cross-session rod, the frequency equation and parameter formula of cosine horn are educed, the cosine horn with same frequency and different area ratio is designed by using Matlab language. Finally, the modal analysis is obtained and the resonance frequency is determined by using finite element software ANSYS. It is shown that the simulation result is consistent with that of the theory and the average relative error is 1.86％.
KeyWords:
cosine horn; resonance frequency; resonance length; modal analysis
