Buckling behavior of laminated composite cylinders under external hydrostatic pressure
Multidiscipline Modeling in Materials and Structures
ISSN: 1573-6105
Article publication date: 29 October 2020
Issue publication date: 4 February 2021
Abstract
Purpose
The objective of this paper is to investigate numerically the buckling behavior of submersible composite cylinders.
Design/methodology/approach
By means of FEM and golden section method, the search of hoop winding layers, longitudinal winding layers and helical winding layers are studied to optimize the buckling pressure. Considering the mid-strengthening cylinder, the size and distribution of stiffeners are studied systematically.
Findings
The results show that laying the hoop winding layers in the two outer sidewalls and the longitudinal winding layers in the middle of the shell is helpful to increase the buckling pressure, and the optimal helical winding angle changes with slenderness ratio.
Originality/value
For mid-strengthening cylinder, the effect of helical winding angle of stiffener on buckling pressure becomes weak gradually with the increase of stiffener thickness. With the increasing of the spacing between stiffeners, the buckling pressure increases first and decreases later. What is more, the mid-strengthening cylinder is less sensitive to the initial geometric imperfections than unstiffened shells.
Keywords
Acknowledgements
This work was supported by the National Natural Science Foundation of China (Grant No. 11502210, 51709229, 51879220, 51479170 and 61803306), the National Key Research and Development Program of China (Grant No. 2016YFC0301300), the Natural Science Basic Research Plan in Shaanxi Province of China (Grant No. 2018JQ5092) and the Fundamental Research Funds for the Central Universities (Grant No. 3102019JC006).
Citation
Li, Z., Pan, G. and Shen, K. (2021), "Buckling behavior of laminated composite cylinders under external hydrostatic pressure", Multidiscipline Modeling in Materials and Structures, Vol. 17 No. 2, pp. 479-492. https://doi.org/10.1108/MMMS-06-2020-0142
Publisher
:Emerald Publishing Limited
Copyright © 2020, Emerald Publishing Limited