Abstract

This paper presents a general method for the analyses of free wave propagation through mono-coupled periodic systems with multiple disorders. The method is applied to investigate the free flexural wave motion in infinite beam type systems on simple supports, comprising a large number of identically disordered repeating units. A more practical case of disorder due to unequal support spacings is considered. Flexural wave propagation in disordered periodic beams is compared to that in periodic beams. The effect of the disorder on the attenuation of free flexural waves in undamped and damped periodic beams is discussed.

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