Optimization of Composite Cylindrical Shell Subjected to Hydrostatic Pressure

Pan, Guang; Lu, Jiangfeng; Shen, Ke; Ke, Jiujiu

doi:10.1007/978-3-319-22879-2_8

Cited by 6 publications

(3 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“… 27 , 28 , 31 , 41 While there are no structurally characterized, homoleptic niobium (tris)dioxolene compounds, all reported niobium tris(dithiolene) compounds possess a trigonal prismatic coordination geometry. 42 – 44 Homoleptic molybdenum tris(dioxolene) complexes are reported with both octahedral and trigonal prismatic geometries, 45 , 46 while all neutral molybdenum tris(dithiolenes) possess a trigonal prismatic geometry. 47 , 48 These molecular analogues suggested the possibility of a trigonal prismatic coordination geometry in 1-Nb and 2-Mo .…”

Section: Resultsmentioning

confidence: 99%

Two-dimensional, conductive niobium and molybdenum metal–organic frameworks

Ziebel

Ondry

2020

Chem. Sci.

View full text Add to dashboard Cite

show abstract

Section: Resultsmentioning

confidence: 99%

Two-dimensional, conductive niobium and molybdenum metal–organic frameworks

Ziebel

Ondry

2020

Chem. Sci.

View full text Add to dashboard Cite

show abstract

“…Helal et al [7] optimized a pressure hull to increase the payload, after that, underwater explosions (UNDEX) were investigated. Also, Pan et al [8] investigated the design optimization of composite shell subjected to hydrostatic pressure. The thickness and the layer orientation were studied using the distribution optimization method.…”

Section: Introductionmentioning

confidence: 99%

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

Helal

Huang

Wang

et al. 2019

JMSE

View full text Add to dashboard Cite

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.

show abstract

“…Also, the optimal model's weight reduces an average 6.65% more than the prototype model when a minimum weight design of a submarine pressure hull under hydrostatic pressure was proposed. Guang et al [8] investigated the optimization of composite cylindrical shell subjected to hydrostatic pressure, using the method of distribution optimization. From the result, the buckling pressure has been greatly improved without changing the shape and the structure of the vehicle.…”

Section: Introductionmentioning

confidence: 99%

Optimum Structural Design of Deep Submarine Pressure hull to achieve Minimum Weight

Fathallah¹,

Helal

2016

The International Conference on Civil and Architecture Engineer

View full text Add to dashboard Cite

The pressure hull is a significant structural component of underwater vehicles, to enable them to withstand environmental loadings such as hydrostatical pressure. Geometric configurations such as hull shape, shell thickness, stiffener layout, and type of construction materials are the key factors influencing the structural performance of pressure hulls. This study aims to maximize the structural efficiency of elliptical deep-submerged pressure hull under hydrostatic pressure. Minimize the buoyancy factor of a submarine pressure hull under hydrostatic pressure was proposed as an objective function to achieve Minimum Weight, with constraints on factors such as general instability, buckling of shell between stiffeners, plate yielding, stiffeners yielding and operating depth. The shell thickness, the radii of the ellipse, the stiffeners offsets and the stiffeners dimensions are selected as design variables. Additionally, a sensitivity analysis is performed to study the influence of the design variables on the structural optimum design, the buoyancy factor ， strength and stability ． The Optimization results of this study provide a valuable reference for designers of underwater vehicles.

show abstract

Optimization of Composite Cylindrical Shell Subjected to Hydrostatic Pressure

Cited by 6 publications

References 14 publications

Two-dimensional, conductive niobium and molybdenum metal–organic frameworks

Two-dimensional, conductive niobium and molybdenum metal–organic frameworks

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

Optimum Structural Design of Deep Submarine Pressure hull to achieve Minimum Weight

Contact Info

Product

Resources

About