TY - JOUR
T1 - Buckling and Post‐Buckling Behavior of Perfect/Perforated Composite Cylindrical Shells under Hydrostatic Pressure
AU - Shen, Ke Chun
AU - Yang, Zhao Qi
AU - Jiang, Lei Lei
AU - Pan, Guang
N1 - Publisher Copyright:
© 2022 by the authors. Licensee MDPI, Basel, Switzerland.
PY - 2022/2
Y1 - 2022/2
N2 - 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 fi-ber/Epoxy, two of which were perforated and reinforced. A test platform was established that al-lows 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 ac-counted 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. Com-paring with the perfect shell, it was validated the reinforcement design could effectively ensure the load carrying capacity of the perforated composite cylindrical shell.
AB - 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 fi-ber/Epoxy, two of which were perforated and reinforced. A test platform was established that al-lows 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 ac-counted 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. Com-paring with the perfect shell, it was validated the reinforcement design could effectively ensure the load carrying capacity of the perforated composite cylindrical shell.
KW - Composite cylindrical shell
KW - Critical buckling pressure
KW - Hydrostatic pressure
KW - Mode
UR - http://www.scopus.com/inward/record.url?scp=85125093735&partnerID=8YFLogxK
U2 - 10.3390/jmse10020278
DO - 10.3390/jmse10020278
M3 - 文章
AN - SCOPUS:85125093735
SN - 2077-1312
VL - 10
JO - Journal of Marine Science and Engineering
JF - Journal of Marine Science and Engineering
IS - 2
M1 - 278
ER -