Harmonic wave propagation in viscoelastic heterogeneous materials Part II: Effective complex moduli
1994
Abstract The effective complex moduli of a heterogeneous periodic viscoelastic medium has been determined through its dispersion and damping curves. These curves give the values of complex wave numbers in terms of frequencies and wave direction. The solution of Christoffel's equations of an equivalent viscoelastic homogeneous medium for judiciously selected wave directions provides us simple relations between complex wave numbers belonging to the heterogeneous medium and its effective complex moduli. Based on this method two examples have been treated. The one, a viscoelastic homogeneous material, to show the accuracy of this method. The other, a fiber composite material, to illustrate the applicability of the method.
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