| Issue |
J. Phys. Colloques
Volume 48, Number C8, Décembre 1987
Fifth European Conference on Internal Friction and Ultrasonic Attenuation in Solids
|
|
|---|---|---|
| Page(s) | C8-365 - C8-369 | |
| DOI | https://doi.org/10.1051/jphyscol:1987854 | |
Fifth European Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. Colloques 48 (1987) C8-365-C8-369
DOI: 10.1051/jphyscol:1987854
1 Naval Research Laboratory, Code 6300, Washington, DC 20375-5000, U.S.A.
2 Crystal Growth and Materials Testing Associates, Lanham, MD 20706, U.S.A.
J. Phys. Colloques 48 (1987) C8-365-C8-369
DOI: 10.1051/jphyscol:1987854
DAMPING BY UNCOUPLED PARTICULATE COMPOSITES
B.B. RATH1, M.A. IMAM1 et N.P. LOUAT21 Naval Research Laboratory, Code 6300, Washington, DC 20375-5000, U.S.A.
2 Crystal Growth and Materials Testing Associates, Lanham, MD 20706, U.S.A.
Abstract
Large damping can be achieved by suitable design of a
composite material which contains a significant volume fraction of freely
vibrating particles in internal cavities of its matrix.An approximate analysis
of the damping behavior of such a materiel is presented. It is shown that the
damping varies linearly with amplitude, inversely with the first power of the
distance of motion and with the second power of (1-k), where k is the
coefficient fo restitution.