Natural Frequency Analysis of Two Nonlinear Panels Coupled with a Cavity Using the Approximate Elliptic Integral Solution and the Method of Harmonic Residual Minimization

<div>(a) Aspect ratio versus frequency ratio (in-phase mode, nine acoustic modes, two harmonic terms). (b) Aspect ratio versus frequency ratio (out of phase mode, nine acoustic modes, two harmonic terms).</div>

Discrete Dynamics in Nature and Society

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Figure 5

Figure 5: Natural Frequency Analysis of Two Nonlinear Panels Coupled with a Cavity Using the Approximate Elliptic Integral Solution and the Method of Harmonic Residual Minimization 

Figure 5 | Natural Frequency Analysis of Two Nonlinear Panels Coupled with a Cavity Using the Approximate Elliptic Integral Solution and the Method of Harmonic Residual Minimization 