Buckling and Post-Buckling Behavior of Perfect/Perforated Composite Cylindrical Shells under Hydrostatic Pressure

In this paper, the buckling and post-buckling behavior of perfect and perforated composite cylindrical shells subjected to external hydrostatic pressure was experimentally investigated. Three filament wound composite cylindrical shells were fabricated from T700-12K Carbon fiber/Epoxy, two of which w...

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Bibliographic Details
Published in:Journal of marine science and engineering 2022-02, Vol.10 (2), p.278
Main Authors: Shen, Ke-Chun, Yang, Zhao-Qi, Jiang, Lei-Lei, Pan, Guang
Format: Article
Language:English
Subjects:
Aluminum alloys
Bearing strength
Buckling
Cameras
Carbon fiber reinforced plastics
Carbon fibers
Carrying capacity
Comparative analysis
composite cylindrical shell
Composite materials
Compression
critical buckling pressure
Cylindrical shells
Deformation
Epoxy compounds
External pressure
Filament winding
Hydrostatic pressure
Investigations
Load carrying capacity
Load history
Mechanical properties
mode
Postbuckling
Pressure
Researchers
Shells
Strain
Strain gauges
Vehicles
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Summary:In this paper, the buckling and post-buckling behavior of perfect and perforated composite cylindrical shells subjected to external hydrostatic pressure was experimentally investigated. Three filament wound composite cylindrical shells were fabricated from T700-12K Carbon fiber/Epoxy, two of which were perforated and reinforced. A test platform was established that allows researchers to observe the deformation of composite cylindrical shells under hydrostatic pressure in real-time during test. According to experimental observation, strain response and buckling deformation wave were discussed. Comparative analysis was carried out based on the experimental observation and finite element prediction. Results show that the deformation of composite cylindrical shell under hydrostatic pressure included linear compression, buckling and post-buckling processes. The buckling behavior was a progressive evolution process which accounted for 20% of the load history, and strain reversal phenomenon generally occurred at the trough of the buckling wave. As for the postbuckling deformation, the load carrying capacity of the shell gradually decreased while the magnitude of strain continued increasing. Both the perfect and perforated composite cylindrical shells collapsed at the trough of the buckling wave. Comparing with the perfect shell, it was validated the reinforcement design could effectively ensure the load carrying capacity of the perforated composite cylindrical shell.
ISSN:2077-1312
2077-1312
DOI:10.3390/jmse10020278