Analysis of composite cylinders under external pressure load

Composites have been increasingly used when weight is an essential factor to be considered. Composite structures have been proposed in deep sea field as competitive replacement of traditional steel structures. So, it is very important to evaluate the mechanical performance of composite structures un...

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Bibliographic Details
Published in:Journal of physics. Conference series 2024-11, Vol.2888 (1), p.12004
Main Authors: Liu, Xueshu, Xin, Hanyang, Jiao, Huifeng
Format: Article
Language:English
Subjects:
Axial stress
Composite materials
Composite pressure hull
Composite structures
Compressive properties
Cylinders
Deep sea
External pressure
FRP
Internal pressure
Laminated plate theory
Laminates
Mechanical properties
Multilayers
Plate theory
Stacking sequence
Stacking sequence (composite materials)
Strain analysis
Stress distribution
Thickness
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Summary:Composites have been increasingly used when weight is an essential factor to be considered. Composite structures have been proposed in deep sea field as competitive replacement of traditional steel structures. So, it is very important to evaluate the mechanical performance of composite structures under high external pressure in order to avoid potential failure or over conservative designs. In this study, solution is proposed for multi-layered composite cylinder based on the classical laminated-plate theory and detailed stress-strain responses are investigated by using the proposed analytical method. It was found that the cylinder is more sensitive to external pressure than internal pressure and the difference between axial stresses is up to 8.2%. In addition, the stacking sequence has great influence on stress distribution through the thickness direction and the sequence of [45/0] may change the stress from tensile to compressive for two adjacent layers. Finally, the difference between hoop stresses at the internal and external surfaces is not affected by the ratio of radius to thickness.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/2888/1/012004