Nonlinear vibration and sound radiation from skin/core debonded sandwich plates

Abstract eng:
The nonlinear structural and acoustic responses of debonded sandwich plates are analysed by using a time-domain finite element/boundary element method. The nonlinear contact/impact constraints on the interfaces of debonded parts are taken into account by the augmented Lagrange method. The time-domain Burton-Miller integral equation is employed to evaluate the radiated sound from debonded plates. Effect of interface contact/impact on the vibro-acoustic responses of debonded plates under impulsive and harmonic loads are examined.

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