Design optimization of composite submerged cylindrical pressure hull using genetic algorithm and finite element analysis

Imran, Muhammad; Shi, Dongyan; Tong, Lili; Waqas, Hafiz Muhammad

doi:10.1016/j.oceaneng.2019.106443

Cited by 47 publications

(15 citation statements)

References 23 publications

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“…The results of the FE analysis for both types of boundary conditions are exactly similar to each other. Therefore, the boundary conditions used in this paper are consistent with the boundary conditions used in [13] and our ongoing study on cylindrical and ovoid composite pressure hulls [23]. The loading and boundary conditions of the pressure hull are represented in Figure 1b.…”

Section: Finite Element Model Of the Spherical Composite Pressure Hullmentioning

confidence: 56%

“…The radius of the spherical pressure hull was 2.4245 m. The size selected was based on the cylindrical pressure hull of similar volume with hemispherical ends used in our previous study [23]. The length of the cylindrical section was 8.3 m and radii of both hemispherical ends was 1.37 m. The geometric model of the spherical pressure hull was created employing the primitive feature for a sphere in the geometric modeling tool of ANSYS.…”

Section: Finite Element Model Of the Spherical Composite Pressure Hullmentioning

confidence: 99%

“…The translation in the Y and Z directions of one node located at the forward end of the pressure hull was also constrained. These boundary conditions are similar to the boundary conditions employed in the earlier studies on composite cylindrical pressure hulls [13,23]. To represent the effect of hydrostatic pressure, the outer surface of the spherical pressure hull received the application of a uniform pressure of 3 MPa.…”

Section: Finite Element Model Of the Spherical Composite Pressure Hullmentioning

confidence: 99%

“…The optimization was carried out for achieving maximum buckling capacity under constraints on the material failure of the composite material. Imran et al [23], conducted a design optimization study of a submersible composite cylindrical pressure hull for maximum buoyancy factor subjected to constraint on material and buckling strengths. They used several lay-up arrangements and three unidirectional composite materials for modeling of the composite pressure hull.…”

Section: Introductionmentioning

confidence: 99%

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Design Optimization and Non-Linear Buckling Analysis of Spherical Composite Submersible Pressure Hull

et al. 2020

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This paper describes an optimization study of a spherical composite submersible pressure hull employing a genetic algorithm (GA) in ANSYS. A total of five lay-up arrangements were optimized for three unidirectional composites carbon/epoxy, glass/epoxy, and boron/epoxy. The minimization of the buoyancy factor ( B . F ) was selected as the design optimization objective. The Tsai-Wu and Tsai-Hill failure criteria and buckling strength factor ( λ ) were used as the material failure and instability constraints. To determine the effect of geometric non-linearity and imperfections on the optimized design, a non-linear buckling analysis was also carried out for one selected optimized design in ABAQUS. The non-linear buckling analysis was carried out using the modified RIKS procedure, in which the imperfection size changed from 1 to 10 mm. A maximum decrease of 65.937% in buoyancy factor ( B . F ) over an equivalent spherical steel pressure hull was computed for carbon/epoxy. Moreover, carbon/epoxy displayed larger decreases in buoyancy factor ( B . F ) in the case of 4 out of a total of 5 lay-up arrangements. The collapse depth decreased from 517.95 m to 412.596 m for a 5 mm lowest mode imperfection. Similarly, the collapse depth decreased from 522.39 m to 315.6018 for a 5 mm worst mode imperfection.

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Section: Finite Element Model Of the Spherical Composite Pressure Hullmentioning

confidence: 56%

Section: Finite Element Model Of the Spherical Composite Pressure Hullmentioning

confidence: 99%

Section: Finite Element Model Of the Spherical Composite Pressure Hullmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Design Optimization and Non-Linear Buckling Analysis of Spherical Composite Submersible Pressure Hull

et al. 2020

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“…Fiber Reinforced Polymers (FRPs) have been widely used in marine, industrial, chemical and civil infrastructure as reinforcing and structural materials with the advantages of being lightweight, high strength, and possessing design flexibility and exceptional corrosion resistance [1][2][3]. Modern engineering systems, especially in the areas related to wind turbines [4], space [5], artery bridges [6], and marine atmospheres [7,8], gradually highlighted the importance of functional necessities. Implementing these functional requirements with materials such as concrete, conventional steel, and other similar materials possess some design challenges.…”

Section: Introductionmentioning

confidence: 99%

Conceptual Design of Composite Bridge Sandwich Structure

et al. 2020

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Fiber-reinforced polymer (FRP) composite bridges are usually constructed for rapid installation. The durability of the bridge is increased by stiffness, strength to weight ratio, and corrosion resistance. The main factors on which the design of the composite sandwiched bridge considerably depends are ply layers, material system, alignment of ply angles, and thickness of the core. In this work, a parametric design study for a bridge using finite element analysis (FEA) is presented. Two types of composite materials—carbon fiber reinforced polymer (CFRP) and glass fiber reinforced polymer (GFRP)—were used as the sandwich structure’s skin, and three different types of woods were used as a core. Different design configurations were acquired based on material and instability constraints by using Euro-codes. Failure criterion of Tsai-Hill, Tsai-Wu, MS, equivalent stress, and maximum shear stress were implemented to analyze the overall failure of the bridge deck under Ultimate Limit State (ULS) conditions. The total deformation was examined under Serviceability Limit State (SLS) conditions, and the results were compared and verified by the previous study. The core was also examined using the core-factor and increasing the thickness of the core through parametric modeling.

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Numerical Analysis of Traditional Aceh Fishing Boat with Various Scenario Loading and Hull Thickness, Manufacturing by Metal Plasma Cutting and Welding

Akhyar

Tamlicha

Hasanuddin

et al. 2021

Proceedings of the 2nd International Conference on Experimental and Computational Mechanics in Engineering

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Design optimization of composite submerged cylindrical pressure hull using genetic algorithm and finite element analysis

Cited by 47 publications

References 23 publications

Design Optimization and Non-Linear Buckling Analysis of Spherical Composite Submersible Pressure Hull

Design Optimization and Non-Linear Buckling Analysis of Spherical Composite Submersible Pressure Hull

Conceptual Design of Composite Bridge Sandwich Structure

Numerical Analysis of Traditional Aceh Fishing Boat with Various Scenario Loading and Hull Thickness, Manufacturing by Metal Plasma Cutting and Welding

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