Hybrid theoretical, experimental and numerical study of vibration and buckling of composite shells with scatter in elastic moduli

Hybrid theoretical, experimental and numerical method is proposed for free vibration and buckling of composite shell with unavoidable scatter in elastic moduli. Based on the Goggin’s measurement techniques, the elastic moduli for material T300-QY8911 are measured, and a set of experimental points ar...

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Bibliographic Details
Published in:International journal of solids and structures 2009-06, Vol.46 (13), p.2539-2546
Main Authors: Wang, Xiaojun, Elishakoff, Isaac, Qiu, Zhiping, Kou, Changhe
Format: Article
Language:English
Subjects:
Composite shell
Ellipsoidal analysis
Experimental and numerical method
Experimental data
Hybrid theoretical
Interval analysis
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Summary:Hybrid theoretical, experimental and numerical method is proposed for free vibration and buckling of composite shell with unavoidable scatter in elastic moduli. Based on the Goggin’s measurement techniques, the elastic moduli for material T300-QY8911 are measured, and a set of experimental points are obtained. The measurements of elastic moduli are quantified by either (1) the smallest ellipsoid and (2) the smallest four-dimensional uncertainty hyper-rectangle. Then uncertainty propagation in vibration and buckling problems of composite shell by ellipsoidal analysis and interval analysis are, respectively, studied from the theoretical standpoint. Comparison between these analyses is performed numerically.
ISSN:0020-7683
1879-2146
DOI:10.1016/j.ijsolstr.2009.01.018