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

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES

卷:46

Article

Wang, Xiaojun¹  Elishakoff, Isaac²  Qiu, Zhiping¹  Kou, Changhe¹ 

[1] Beijing Univ Aeronaut & Astronaut, Inst Solid Mech, Beijing 100083, Peoples R China

[2] Florida Atlantic Univ, Dept Mech Engn, Boca Raton, FL 33431 USA

关键词: Hybrid theoretical;    Experimental and numerical method;    Ellipsoidal analysis;    Interval analysis;    Experimental data;    Composite shell;   

DOI  :  10.1016/j.ijsolstr.2009.01.018

来源: Elsevier

【 摘 要 】

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. (C) 2009 Elsevier Ltd. All rights reserved.

【 授权许可】

Free