What is an internal resonance in a MDOF system? A DOF system with a cubic nonlinearity has
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What is an internal resonance in a MDOF system?
A DOF system with a cubic nonlinearity has a linear natural frequency of \(120 \mathrm{rad} / \mathrm{s}\). The system is forced by harmonic excitations at different frequencies \(\omega_{1}\) and \(\omega_{2}\). What resonances does the system have under the given circumstances.
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