Optimization of Composite Cylindrical Shell Subjected to Hydrostatic Pressure

2015 ◽  
pp. 81-90 ◽  
Author(s):  
Guang Pan ◽  
Jiangfeng Lu ◽  
Kechun Shen ◽  
Jiujiu Ke
Keyword(s):  
Cylindrical Shell ◽  
Hydrostatic Pressure ◽  
Composite Cylindrical Shell

Optimizing the buckling strength of filament winding composite cylinders under hydrostatic pressure

2018 ◽  
Vol 37 (13) ◽  
pp. 892-904 ◽  
Author(s):  
Shen Ke Chun ◽  
Pan Guang
Keyword(s):  
Cylindrical Shell ◽  
Hydrostatic Pressure ◽  
Filament Winding ◽  
Base Line ◽  
Composite Cylindrical Shell ◽  
Element Analysis ◽  
Optimization Framework ◽  
Number Of Layers ◽  
Design Variables ◽  
Critical Buckling Pressure

This paper presents the design optimization of filament winding composite cylindrical shell under hydrostatic pressure to maximize the critical buckling pressure. To this end, an optimization framework has been developed by employing numerical solution integrated with genetic algorithm. The design variables are fiber orientation and the corresponding number of layers. The framework is used to find the optimal design of filament winding composite cylindrical shell subjected to hydrostatic pressure. Three types of winding pattern are investigated, and the maximum critical buckling loads are increased by 26.14%, 25.82% and 20.95% compared with the base line, respectively. The influences of design variables on the critical buckling pressure are investigated. Results show that filament winding angles have more significant effect on the critical buckling pressure than the corresponding number of layers. Comparative study is carried out to verify the efficiency and accuracy of the optimization framework. Compared with the finite element analysis, the optimization framework has significant advantages in terms of calculation efficiency.

scholarly journals Exploring Strain Characteristics and Bearing Capacity of a Carbon Filament-Wound Composite Cylindrical Shell under Hydrostatic Pressure

2020 ◽  
Vol 38 (5) ◽  
pp. 937-943
Author(s):  
Kechun Shen ◽  
Guang Pan ◽  
Yao Shi ◽  
Zhun Li ◽  
Ranfeng Wei
Keyword(s):  
Cylindrical Shell ◽  
Hydrostatic Pressure ◽  
Bearing Capacity ◽  
Failure Mode ◽  
Strain Amplitude ◽  
Circumferential Strain ◽  
Composite Cylindrical Shell ◽  
Filament Wound ◽  
Filament Wound Composite ◽  
Wound Composite

In order to study the strain characteristics and bearing capacity of a filament-wound composite cylindrical shell and its different dome structures under hydrostatic pressure, experiments were carried out. Firstly, static tests were conducted to study the axial and circumferential strain of the composite cylindrical shell on its different positions. The bearing capacity of the ellipsoid dome was compared with that of the hemisphere dome. The blasting test and the nonlinear analysis of the strain were conducted. The relationship between the strain trend and the crack propagation path was studied, and the structural failure mode was explored. The study shows that as the hydrostatic pressure increases, the strain increases and that the strain amplitudes of measuring points gradually appear different and show varying degrees of nonlinearity. Along the circumferential direction of the circumferential crack, the axial strain amplitude gradually decreases by 20%. But the circumferential strain amplitude gradually increases by 94%. As the load of the composite cylindrical shell increases to a certain extent, its final failure mode is strength failure, but its instability is not obvious.

On the elastic buckling of cross-ply composite closed cylindrical shell under hydrostatic pressure

2021 ◽  
Vol 227 ◽  
pp. 108633
Author(s):  
Muhammad Imran ◽  
Dongyan Shi ◽  
Lili Tong ◽  
Ahsan Elahi ◽  
Muqeem Uddin
Keyword(s):  
Cylindrical Shell ◽  
Hydrostatic Pressure ◽  
Elastic Buckling ◽  
Closed Cylindrical Shell
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