Strain Response and Buckling Behavior of Composite Cylindrical Shells Subjected to External Pressure with One End Fixed and the Other under Free Boundary Conditions
Abstract
:1. Introduction
2. Specimen and External Hydrostatic Pressure Test
3. Numerical Simulation
4. Results and Discussion
4.1. Buckling Pressure and Buckling Mode
4.2. Strain Response of Control Sleeve
4.3. Strain Response of Composite Cylindrical Shell
5. Conclusions
- (1)
- Numerical simulation method calculated the critical buckling load within 3.5% deviation from test results, not taking the initial imperfections of the cylinders into consideration. As for the buckling modes, predictions given by numerical method were in good agreement with the phenomena observed in tests, which were characterized by three waves in the hoop direction.
- (2)
- In the static deformation stage, the magnitudes of compressive strains of the composite cylinder in the axial direction were smaller than those in hoop direction. It revealed that the axial stiffness of the shell was greater than the hoop stiffness.
- (3)
- Boundary conditions had a significant influence on the strain response of the control sleeves of the shell. For the left control sleeve, it presented positive strains in axial direction and negative strain in hoop direction. For the right control sleeve, it showed negative strain in the axial direction and positive strains in the hoop direction.
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
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Properties | Symbol | Value | Unit |
---|---|---|---|
Elastic modulus | E11 | 102 | GPa |
E22 | 7 | GPa | |
E33 | 7 | GPa | |
Poisson’s ratio | v12 | 0.16 | |
v13 | 0.16 | ||
v23 | 0.32 | ||
Shear modulus | G12 | 8 | GPa |
G13 | 8 | GPa | |
G23 | 4.5 | GPa |
ID | Stacking Sequence | Buckling Pressure/MPa | |
---|---|---|---|
Test | FEM (Error, %) | ||
A# | [±90]2/([±20]/[±90]/[±40]/[±90]/[±60]/[±90])2/[±90] | 3.06 | 3.02 (1.31%) |
B# | 3.12 | 3.02 (3.21%) | |
C# | 3.09 | 3.02 (2.27) |
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Shen, K.-C.; Liu, X.-J.; Huang, Y.-H.; Pan, G. Strain Response and Buckling Behavior of Composite Cylindrical Shells Subjected to External Pressure with One End Fixed and the Other under Free Boundary Conditions. Sensors 2022, 22, 6781. https://doi.org/10.3390/s22186781
Shen K-C, Liu X-J, Huang Y-H, Pan G. Strain Response and Buckling Behavior of Composite Cylindrical Shells Subjected to External Pressure with One End Fixed and the Other under Free Boundary Conditions. Sensors. 2022; 22(18):6781. https://doi.org/10.3390/s22186781
Chicago/Turabian StyleShen, Ke-Chun, Xue-Jian Liu, Yi-Hua Huang, and Guang Pan. 2022. "Strain Response and Buckling Behavior of Composite Cylindrical Shells Subjected to External Pressure with One End Fixed and the Other under Free Boundary Conditions" Sensors 22, no. 18: 6781. https://doi.org/10.3390/s22186781
APA StyleShen, K.-C., Liu, X.-J., Huang, Y.-H., & Pan, G. (2022). Strain Response and Buckling Behavior of Composite Cylindrical Shells Subjected to External Pressure with One End Fixed and the Other under Free Boundary Conditions. Sensors, 22(18), 6781. https://doi.org/10.3390/s22186781