Equivalent bending stiffness of composite laminated tube based on 3D beam theory

被引：0
|
作者：
Zhang H. [1 ]
Li F. [1 ]
Pan D. [2 ]
机构：
[1] College of Field Engineering, PLA University of Science & Technology, Nanjing
[2] School of Architecture Engineering, Nanjing Institute of Technology, Nanjing
来源：
Li, Feng (lifeng7949@163.com) | 1694年 / Beijing University of Aeronautics and Astronautics (BUAA)卷 / 33期
关键词：
3D beam theory; 3D elastic effects; Classical laminated plate theory; Composite laminated tubes; Equivalent bending stiffness;
D O I：
10.13801/j.cnki.fhclxb.20151029.001
中图分类号：
学科分类号：
摘要：
In response to composite tube with arbitrary lamination and thickness, an approach of the equivalent bending stiffness was presented. The deformation theory with realistic deformation of composite tube beam was used in this analysis. Transverse shear deformation, non-uniform torsion effects, the primary and the secondary warping effects and 3D elastic effects in laminate material were considered. According to the actual stress state of the shell wall, the caculation model of the equivalent bending stiffness of the composite tube was established. By comparison with three-point bending experimental data and the equivalent bending stiffness calculated by classical laminated plate theory of four composite tubes, the calculation model was validated. The application of the calculation model was analyzed by comparing degradation of the present theory with the calculation method of bending stiffness of isotropic material. © 2016, BUAA Culture Media Group Ltd. All right reserved.
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页码：1694 / 1701
页数：7
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