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Structural Engineering and Mechanics
  Volume 55, Number 2, July25 2015, pages 399-411
DOI: http://dx.doi.org/10.12989/sem.2015.55.2.399
 


Buckling analysis of filament wound composite cylindrical shell for considering the filament undulation and crossover
Zhangxin Guo, Xiaoping Han, Meiqing Guo and Zhijun Han

 
Abstract
    The buckling equations of filament wound composite cylindrical shell are established. The coefficients Kij and Lij of the buckling equations are determined by solving the equations. The geometric analysis and the effective stiffness calculation for the fiber crossover and undulation region are respectively accomplished. Using the effective stiffness of the undulation region, the specific formulas of the coefficients Kij and Lij of the buckling equations are determined. Numerical examples of the buckling critical loads have been performed for the different winding angles and stacking sequences cylindrical shell designs. It can be concluded that the fiber undulation results in the less effect on the buckling critical loads Pcr. Pcr increases with the thickness-radius ratio. The effect on Pcr due to the fiber undulation is more obvious with the thickness-radius ratio. Pcr decreases with the length-radius ratio. The effect on Pcr due to the fiber undulation can be neglected when the ratio is large.
 
Key Words
    filament winding composite; cylindrical shell; buckling; fiber undulation; external pressure
 
Address
Zhangxin Guo: College of Mechanics, Taiyuan University of Technology, Taiyuan 030024, China; Department of Engineering Mechanics, Northwestern Polytechnical University, Xi\'an 710072, China
Xiaoping Han: Department of Engineering Mechanics, Northwestern Polytechnical University, Xi\'an 710072, China
Meiqing Guo and Zhijun Han: Taiyuan University of Technology, Taiyuan 030024, China
 

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