Abstract
In order to obtain computational models to aid the design of viscoelastic sandwich structures used as passive damping treatment, many aspects should be considered. A crucial aspect is the incertitude inherent to experimental characterization tests of the complex modulus. Usually the computational model parameters are determined by curve fitting mean values of experimental dispersions. Considering that these dispersions are inherent to experimental tests and also those small variations in the fitted parameters lead to considerable changes on the dynamic behavior of a Viscoelastic Material (VEM), hence a nondeterministic model is more suitable than the usual deterministic ones. In that way, starting from dynamic properties of a VEM, a nondeterministic numerical model, which takes into account incertitudes in the VEM curve fitting procedure, is proposed.
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