Reliability-based load and resistance factor design of composite pressure vessel under external hydrostatic pressure

Cai, Baoping; Liu, Yonghong; Liu, Zengkai; Tian, Xinliang; Ji, Renjie; Li, Hang

doi:10.1016/j.compstruct.2011.05.020

Cited by 38 publications

(14 citation statements)

References 26 publications

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“…where , and represent the ith sandwich composite pressure hull diameters, and its lower and upper limits, respectively. Similarly, the length of the main part is presented in Equation (19) ,…”

Section: Optimization Design Variablesmentioning

confidence: 99%

“…Furthermore, they investigated the optimal lamination design of an un-stiffened thin composite underwater vessels subjected to buckling. Ca et al [19] investigated the composite pressure vessel subjected to an external pressure. The results illustrated that, when the applied load was bigger than the critical buckling load, buckling and burst behaviors were occurred.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Analysis of Sandwich Composite Deep Submarine Pressure Hull Considering Failure Criteria

Helal

Huang

Wang

et al. 2019

JMSE

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The pressure hull is the primary element of submarine, which withstands diving pressure and provides essential capacity for electronic systems and buoyancy. This study presents a numerical analysis and design optimization of sandwich composite deep submarine pressure hull using finite element modeling technique. This study aims to minimize buoyancy factor and maximize deck area and buckling strength factors. The collapse depth is taken as a base in the pressure hull design. The pressure hull has been analyzed using two composite materials, T700/Epoxy and B(4)5505/Epoxy, to form the upper and lower faces of the sandwich composite deep submarine pressure hull. The laminated control surface is optimized for the first ply failure index (FI) considering both Tsai–Wu and maximum stress failure criteria. The results obtained emphasize an important fact that the presence of core layer in sandwich composite pressure hull is not always more efficient. The use of sandwich in the design of composite deep submarine pressure hull at extreme depths is not a safe option. Additionally, the core thickness plays a minor role in the design of composite deep submarine pressure hull. The outcome of an optimization at extreme depths illustrates that the upper and lower faces become thicker and the core thickness becomes thinner. However, at shallow-to-moderate depths, it is recommended to use sandwich composite with a thick core to resist the shell buckling of composite submarine pressure hull.

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Section: Optimization Design Variablesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Sandwich Composite Deep Submarine Pressure Hull Considering Failure Criteria

Helal

Huang

Wang

et al. 2019

JMSE

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“…In deep-sea application the significant reduction in weight can enable the use of thicker pressure hull wall for increased dive depth, larger propulsion system for increased speed and increased payload. CFRP and GFRP seem to be the most attractive composite materials for underwater application and have been explored in numerous studies (Cagdas and Adali, 2011;Cai et al, 2011;Moon et al, 2010). As an alternative to the design optimization method presented in the previous section, Carbon/Epoxy laminated composite material is used for the reference straight cylindrical pressure hull replacing Ti-6Al-4V titanium alloy in order to Table 4 Optimal layup of the CFRP for the straight cylindrical pressure hull Fig.…”

Section: Composite Materials Optimizationmentioning

confidence: 99%

Optimal Design of Deep-Sea Pressure Hulls using CAE tools

Jeong

Henry²

2012

Journal of the Computational Structural Engineering Institute o

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Geometric configurations such as hull shape, wall thickness, stiffener layout, and type of construction materials are the key factors influencing the structural performance of pressure hulls. Traditional theoretical approach provides quick and acceptable solutions for the design of pressure hulls within specific geometric configuration and material. In this paper, alternative approaches that can be used to obtain optimal geometric shape, wall thickness, construction material configuration and stiffener layout of a pressure hull are presented. CAE(Computer Aided Engineering) based design optimization tools are utilized in order to obtain the required structural responses and optimal design parameters. Optimal elliptical meridional profile is determined for a cylindrical pressure hull design using metamodel-based optimization technique implemented in a fully-integrated parametric modeler-CAE platform in ANSYS. While the optimal composite laminate layup and the design of ring stiffener for a thin-walled pressure hull are obtained using gradient-based optimization method in OptiStruct. It is noted that the proposed alternative approaches are potentially effective for pressure hull design.

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“…Ca et al [19] presented a reliability-based load and resistance factor design procedure for subsea composite pressure vessel subjected to external hydrostatic pressure. The longitudinal modulus, inside radius of composite layers, unsupported length, and external pressure significantly affect the design results, whereas transversal modulus, Poisson's ratio, shear modulus, and winding angle have little effects.…”

Section: Introductionmentioning

confidence: 99%

Design Optimization of Composite Elliptical Deep-Submersible Pressure Hull for Minimizing the Buoyancy Factor

Fathallah

Tong

et al. 2014

Advances in Mechanical Engineering

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The design of deep submersible pressure hull's structural is one of the core technologies of submersible development of human history. Submersible pressure hulls with fiber-reinforced multilayer constructions have been developed in the recent years as substitutes for classical metallic ring-stiffened pressure hulls; strength and stability are its top priority. This paper investigates the optimum design of a composite elliptical deep-submerged pressure hull under hydrostatic pressure to minimize the buoyancy factor of the submersible pressure hull under constraints on the failure criteria and the buckling strength of the hulls to reach the maximum operating depth. The thickness and the fiber orientation angles in each layer, the radii of the ellipse, and stringers dimensions were taken as design variables and determined in the design process. The optimization procedures are performed using commercial finite element analysis software ANSYS. Additionally, a sensitivity analysis is performed to study the influence of the design variables on the structural optimum design. Results of this study provide a valuable reference for designers of underwater vehicles.

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Reliability-based load and resistance factor design of composite pressure vessel under external hydrostatic pressure

Cited by 38 publications

References 26 publications

Numerical Analysis of Sandwich Composite Deep Submarine Pressure Hull Considering Failure Criteria

Numerical Analysis of Sandwich Composite Deep Submarine Pressure Hull Considering Failure Criteria

Optimal Design of Deep-Sea Pressure Hulls using CAE tools

Design Optimization of Composite Elliptical Deep-Submersible Pressure Hull for Minimizing the Buoyancy Factor

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