Damping properties analysis of composite sandwich doubly-curved shells

被引：27
|
作者：
Zhai, Yanchun [1 ,2 ]
Su, Jianmin [1 ]
Liang, Sen [2 ]
机构：
[1] Weifang Univ Sci & Technol, Facil Hort Lab Univ Shandong, Weifang 262700, Peoples R China
[2] Qingdao Univ Technol, Sch Mech Engn, Qingdao 266520, Peoples R China
来源：
COMPOSITES PART B-ENGINEERING | 2019年 / 161卷
基金：
中国国家自然科学基金;
关键词：
Doubly-curved shells; Composite material; Viscoelastic core; First-order shear deformation shell theory; Damping properties; FREE-VIBRATION ANALYSIS; CYLINDRICAL-SHELLS; SHALLOW SHELLS; 3-LAYER; BEAM;
D O I：
10.1016/j.compositesb.2018.10.086
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The damping properties analysis of composite sandwich doubly-curved shells (CSDCS) is presented in this paper. First, based on the Hamilton's principle, governing equations of CSDCS are developed by applying the first-order shear deformation shell theory. Because the rotary inertias and shear deformation of all layers are taken into account, thin-to-moderately thick doubly-shells can be studied. Next, these equations are solved by means of the closed-form Navier method. The accuracy of the solution is validated by comparing its results with those available in the literature. Finally, the variation of modal loss factor with system parameters is evaluated and presented graphically, and optimal damping properties of CSDCS are obtained by analyzing the influence of the geometrical parameters as well as the physical parameters on damping properties.
引用
收藏
页码：252 / 262
页数：11
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