Nonlinear Forced Vibration of a Viscoelastic Buckled Beam with 2 : 1 Internal Resonance

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<g transform="matrix(.012,-0,0,-.012,8.413,12.638)"><path d="M456 178h-96v-72q0 -51 12.5 -62.5t72.5 -16.5v-27h-256v27q65 5 78 17t13 62v72h-260v28q182 271 300 426h40v-407h96v-47zM280 225v295h-2q-107 -148 -196 -295h198z" id="x34"></path></g>
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Mathematical Problems in Engineering

fig13

Figure 13

Figure 13: Nonlinear Forced Vibration of a Viscoelastic Buckled Beam with 2 : 1 Internal Resonance 