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標題: Vibration analysis of rotating composite shafts containing randomly oriented reinforcements
作者: Chang, C.Y.
Chang, M.Y.
Huang, J.H.
關鍵字: rotating shafts
composite materials
randomly oriented reinforcements
Mori-Tanaka mean-field theory
critical speed analysis
spindle-bearing system
laminated composite
dynamic stability
timoshenko shaft
期刊/報告no:: Composite Structures, Volume 63, Issue 1, Page(s) 21-32.
摘要: The vibration behaviors of the rotating composite shafts containing randomly oriented reinforcements are studied in this paper. The Mori-Tanaka mean-field theory is adopted here to account for the interaction at the finite concentrations of reinforcements in the composite material. The effective elastic moduli of the composite material are expressed as a function of the phase properties, volume fraction, orientation angles of its constituents. The finite element model of the rotating continuous fiber-reinforced composite shafts derived previously by authors is extended here to the case that contains the fiber inclusions by taking these effective elastic moduli into account. Based on this model, the natural frequencies of the stationary shafts, and the whirling speeds as well as the critical speeds of the rotating shafts are investigated. The results reveal that the content and the orientation of reinforcements have great influence on the dynamic characteristics of the composite shafts. (C) 2003 Elsevier Ltd. All rights reserved.
ISSN: 0263-8223
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