SiC長繊維強化アルミ合金の振動減衰特性(<特集> ダンピング)

概要

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In this paper, we present both analytical and experimental investigations concerned with the damping characteristics of SiC fiber/Aluminum composite beams. The effects of fiber orientation angle on the damping capacity and resonance flexural frequency are investigated by decomposing the energy dissipation associated with each of the resulting stress components. Each energy dissipation term is then identified, and the effects on damping are examined by calculating the terms' contributions to the total energy dissipation. For comparison with the analytical results, an experimental study measuring damping capacity and resonance frequency of a SiC/Al composite beam was carried out using a impulse-frequency response technique. Good agreement was obtained between the analytical and experimental results of SiC/Al unidirectional and plain-cloth composites. Furthermore, the changes in damping capacity and resonance frequency of the SiC/Al composite beam at the excited frequency and temperature are examined.
社団法人日本機械学会の論文
1993-10-25