Vibration characteristics of rotating pretwisted composite tapered blade with graphene coating layers

被引：107
作者：
Zhang, W. [1 ]
Niu, Y. [1 ]
Behdinan, K. [2 ]
机构：
[1] Beijing Univ Technol, Coll Mech Engn, Beijing Key Lab Nonlinear Vibrat & Strength Mech, Beijing 100124, Peoples R China
[2] Univ Toronto, Dept Mech & Ind Engn, Adv Res Lab Multifunct Light Weight Struct, 5 Kings Coll Rd, Toronto, ON M5S 3G8, Canada
来源：
AEROSPACE SCIENCE AND TECHNOLOGY | 2020年 / 98卷
基金：
中国国家自然科学基金;
关键词：
Pretwisted tapered cylindrical panel; Graphene coating layer; Rotating speed; Frequency veering; NONLINEAR VIBRATION; ELASTIC FOUNDATIONS; FORCED VIBRATIONS; DYNAMIC-ANALYSIS; MODAL-ANALYSIS; PLATES; MODEL; BEAMS;
D O I：
10.1016/j.ast.2019.105644
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
A new dynamic model of the rotating tapered cantilever cylindrical panel with the graphene coating layers is developed to investigate the vibration characteristics of the rotating pretwisted tapered blade. It is assumed that the graphene platelets (GPLs) are randomly oriented and uniformly dispersed in the top layer and the bottom layer of the rotating pretwisted composite tapered blade. The modified Halpin-Tsai model is used to estimate the effective Young's modulus. The rule of the mixture is used to calculate the effective Poisson's ratio and mass density. Based on the Green strain tensor, an accurate strain-displacement relationship is acquired. The effects of the centrifugal force and Coriolis force are considered in the formulation. The Chebyshev-Ritz method is utilized to obtain the natural frequencies and mode shapes of the rotating pretwisted composite tapered blade with the graphene coating layers. The accuracy of the proposed model is validated through several comparison studies with the results of the present literatures and ANSYS. The free vibration characteristics are analyzed by considering different material and geometry parameters of the rotating pretwisted composite tapered cantilever cylindrical panel with the graphene coating layers, such as the graphene platelet (GPL) geometry, GPL weight fraction, taper ratio, length-to-radius ratio, pretwist angle, presetting angle and rotating speed. The frequency veering and the mode shape shift phenomena are found in the rotating pretwisted tapered cantilever cylindrical panel with the graphene coating layers. (C) 2019 Elsevier Masson SAS. All rights reserved.
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页数：20
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