Internal Friction in Vibrating Granular Reeds and its Application to Vitreous Silica

摘要

The Zener theory of internal friction in vibrating reeds has been generalized to three dimensions and expressions derived for the case where the grained structure of the reed is smaller than the wavelength of the standing wave. The theory is applied to the experimental values of the internal friction in vitreous silica; it is shown that such internal friction in silica may be explained by the presence of small grains whose dimensions are those found in recent electron micrographs.