The Analytical and Numerical Stress Analysis of Various Domes for Composite Pressure Vessels

Padovec, Zdeněk; Vondráček, Dominik; Mareš, Tomáš

doi:10.24132/acm.2022.781

Cited by 3 publications

(5 citation statements)

References 13 publications

(26 reference statements)

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“…The requirement for objective functions F 3 and F 4 is that they should be close to zero (reaching negative values is undesirable). That is the reason why functions F 3 and F 4 are considered in square form in equation (16). Pressure, when the first failure of end dome occurs, is called damage pressure.…”

Section: Optimizationmentioning

confidence: 99%

“…Also, a brand-new end dome shape was designed using data-driven evolutionary algorithms. The mathematical description of shell of revolution with double curvature wound with respect to geodesic condition is based on previous studies (see Padovec et al 16 for example) therefore only the theory related to the junction between cylindrical part and end dome are described below.…”

Section: Introductionmentioning

confidence: 99%

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Analysis and optimization of junction between cylindrical part and end dome of filament wound pressure vessels using data driven evolutionary algorithms

Vondráček

Padovec

Mareš

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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The junction between cylindrical part and end dome is the most critical place of the filament wound composite pressure vessels because the shear forces and bending moments occur in this area. The strength analyses of junction between cylindrical part and different types of known end domes based on influence coefficients method were performed for filament wound composite pressure vessels manufactured using glass-epoxy and carbon-epoxy composites. Four known end domes were considered that is, a spherical shell, a geodesic-isotensoid shell, a shell based on minimizing of the Tsai-Hill’s strength criterion and shell designed in authors’ previous work (Hoffman 1 shell). Moreover, the study is also dealing with design of optimal end dome shape which takes account to the junction area. Finding of optimal end dome shape was based on data-driven evolutionary algorithms. Using input dataset from the analytical simulation surrogate models were created using Evolutionary Deep Neural Nets (EvoDN2) algorithm. The multicriterial optimization procedure was performed using Constrained Reference Vector Algorithm (cRVEA) optimization algorithm. Results indicates that the optimal end dome shape highly depend on material properties.

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Section: Optimizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis and optimization of junction between cylindrical part and end dome of filament wound pressure vessels using data driven evolutionary algorithms

Vondráček

Padovec

Mareš

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…Sharma P et al [40] analyzed the effects of dome shape on the burst pressure, failure characteristics and weight performance of the vessel. Padovec Z et al [41] calculated analytical and numerical solutions for five selected domes (a spherical shell, a geodesicisotensoid shell, a shell with zero transversal strain, a shell with zero transversal stress and a shell with identical strain). The stresses and strains in the domes were evaluated analytically from known equations with the use of MATLAB script for numerical evaluation and via finite element analysis (FEA) with Abaqus software, and the results were compared with each other.…”

Section: Introductionmentioning

confidence: 99%

Strength and Failure Analysis of Fiber-Wound Composite Gas Cylinder via Numerical Simulation

Wu,

Yang,

Zhou

2024

Materials

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Based on the classical grid theory and related regulations, a structure model of a fiber-wound composite gas cylinder was designed in this paper. Based on the design results, a finite element model of a fully wound composite cylinder of an aluminum alloy inner liner with a working pressure of 35 MPa was established based on the ABAQUS software, and its stress distribution under working pressure and minimum burst pressure was analyzed. According to engineering experience, the pressure tolerance of composite cylinders can be improved by proper autofrettage pressure before working pressure, so the influence of autofrettage pressure was analyzed in this paper. The optimum autofrettage pressure was selected by setting the autofrettage gradient, and damage analysis was carried out on the cylinder with nominal working pressure of 35 MPa based on the Hashin failure criterion. The results show the initial damage sequence: matrix stretching occurs before the fiber stretching, and the damage generally starts from the spiral-wound layer. The tensile damage first appears in the transition section between the head and the barrel body, and the damage of the spiral-wound layer develops from the inner layer of the wound layer to the outer layer, while the damage of the circumferentially wound layer develops from the outer layer to the inner layer.

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“…The behavior of "thin" or "thick" shells under various loading conditions can be studied by a number of the available approaches: analytical [29][30][31][32]; a combination of analytical and numerical [33][34][35][36]; a combination of analytical, experimental, and numerical [37][38][39][40]; semi-analytical [41][42][43]. The first question that arises is regarding the criteria under which the engineer will perform an analysis by the implementation of shell finite elements by applying the "firstorder" or the "second-order" theory.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Finite Element In-Depth Verification: Base Displacements of a Spherical Dome Loaded by Edge Forces and Moments

Terzi,

Makarios

2023

Modelling

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Nowadays, engineers possess a wealth of numerical packages in order to design civil engineering structures. The finite element method offers a variety of sophisticated element types, nonlinear materials, and solution algorithms, which enable engineers to confront complicated design problems. However, one of the difficult tasks is the verification of the produced numerical results. The present paper deals with the in-depth verification of a basic problem, referring to the axisymmetric loading by edge forces/moments of a spherical dome, truncated at various roll-down angles, φo. Two formulations of analytical solutions are derived by the bibliography; their results are compared with those produced by the implementation of the finite element method. Modelling details, such as the finite element type, orientation of joints, application of loading, boundary conditions, and results’ interpretation, are presented thoroughly. Four different ratios of the radius of curvature, r and shell’s thickness, and t are examined in order to investigate the compatibility between the implementation of the finite element method to the “first-order” shell theory. The discussion refers to the differences not only between the numerical and analytical results, but also between the two analytical approaches. Furthermore, it emphasizes the necessity of contacting even linear elastic preliminary verification numerical tests as a basis for the construction of more elaborated and sophisticated models.

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The Analytical and Numerical Stress Analysis of Various Domes for Composite Pressure Vessels

Cited by 3 publications

References 13 publications

Analysis and optimization of junction between cylindrical part and end dome of filament wound pressure vessels using data driven evolutionary algorithms

Analysis and optimization of junction between cylindrical part and end dome of filament wound pressure vessels using data driven evolutionary algorithms

Strength and Failure Analysis of Fiber-Wound Composite Gas Cylinder via Numerical Simulation

Finite Element In-Depth Verification: Base Displacements of a Spherical Dome Loaded by Edge Forces and Moments

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