Research Article

Analysis of the Nonlinear Structural-Acoustic Resonant Frequencies of a Rectangular Tube with a Flexible End Using Harmonic Balance and Homotopy Perturbation Methods

Figure 5

(a) The vibration amplitude ratio versus the 1st nonlinear resonant frequency ( , 1.5, 2.0). (b) The vibration amplitude ratio versus the 2nd nonlinear resonant frequency ( , 1.5, 2.0).
391584.fig.005a
(a)
391584.fig.005b
(b)