Designing the Structure of a Pressure Vessel Wall Made of a Layered Composite Material with Nonproportional Changes in Stress Components

Сапожников, С. Б.; Semashko, M. Yu.

doi:10.1007/s11029-018-9765-1

Cited by 4 publications

(5 citation statements)

References 16 publications

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“…The load equilibrium is stable between the liner and the CFRP because load and strain compatibility. The static equilibrium equations at zero pressure can be expressed as equations ( 3) and (4). Where θ σ Lg , Lgz σ , θ σ fg and α σ fg are residual hoop stress of liner, residual axial stress of liner, stress of hoop layers and stress of helical layers at zero pressure respectively.…”

Section: Static Equilibrium Equationsmentioning

confidence: 99%

“…The ultra-thin liner is designed to carry few of the internal pressure plastically, the remainder of the load is carried by the composite. The static equilibrium equations at working pressure can be expressed as equations ( 3) and (4).…”

Section: Static Equilibrium Equationsmentioning

confidence: 99%

“…The strain in the COPV during increasing load is controlled by the CFRP which is assumed to remain elastic, the continuity of strain and displacement in the liner and composite is ensured by load and strain compatibility in COPV. The strain continuity equations can be expressed as equations ( 3) and (4).…”

Section: Static Equilibrium Equationsmentioning

confidence: 99%

“…The liner's elastic-plastic deformation and the presence of hardening will affect the sizing process, residual stresses at zero pressure, stresses at working pressure, the liner's fatigue durability and the stress distribution state of liner and CFRP at different pressures [3]. The stress distributions and continuous strains between liner and CFRP are difficult to calculate precisely in terms of traditional grid theory, because the liner's residual stresses at zero pressure and operational stresses at working pressure are approximately equal to be compressive elastic limit and tensile elastic limit respectively in the static equilibrium equations and strain continuity equations [4]. This hypothesis in traditional grid theory gives rise to relatively larger error range for stress distribution calculation in double shells at different pressures.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Mechanical Study of Carbon Fiber Reinforced Plastic and Thin-walled Metal Liner in Bi-Material COPV Based on Grid Theory Optimization

Zhang

Zhao

et al. 2021

MSF

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Composite over-wrapped pressure vessel (COPV) with ultra-thin metal liner and high strength carbon fiber reinforced plastic (CFRP) structure was widely used in space system. Meanwhile, there are some difficulties in the calculation of COPV stress-strain state related to the elastic-plastic liner and elastic composite. In this paper a novel design theory was proposed for calculating stress distribution in the bi-material COPV and determining the optimal thickness parameters of COPV based on traditional grid theory optimization. This new theory named Parameters Correspondence Relationship Structure Design Method (PCRSDM) can increase the design precision and structure performance factor of COPV compared to traditional grid theory. The correct models of mechanical characteristic between liner and CFRP are established from the view of optimized grid theory, the present theory is useful to develop a theoretical framework to calculate and design the COPV double shells. The COPV stress-strain behavior is also systemically studied by the ANSYS finite element analysis (FEA), the results show good agreement between FEA simulation and PCRSDM calculation. Both FEA and PCRSDM can meet the design requirements of COPV. A complete design, development and qualification testing of a specialized COPV used to satellite propulsion system was successfully conducted to verify the COPV design in terms of PCRSDM and FEA, the result show that PCRSDM is suitable for the design of COPV.

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Section: Static Equilibrium Equationsmentioning

confidence: 99%

Section: Static Equilibrium Equationsmentioning

confidence: 99%

Section: Static Equilibrium Equationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Mechanical Study of Carbon Fiber Reinforced Plastic and Thin-walled Metal Liner in Bi-Material COPV Based on Grid Theory Optimization

Zhang

Zhao

et al. 2021

MSF

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“…New functionally graded and composite materials, including polymer composites, with a complex inhomogeneous structure are nowadays used in many areas of modern technology and production (see, for example, review paper [1], in particular, in aircraft engineering [2], space technologies, for development of "smart" systems as well as for prosthetics in medicine. The properties of such materials can vary significantly in the sample volume, while due to inhomogeneity and complex rheology, the direct experimental evaluation of these properties requires significant material costs and time resources.…”

Section: Introductionmentioning

confidence: 99%

Identification of Prestress in Inhomogeneous Viscoelastic Timoshenko Plates

Bogachev,

Chebakov,

Datcheva

2023

Int. J. of Appl. Math.

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Proceeding from the general theory of steady-state vibrations of inhomogeneous prestressed bodies, in the present work the problem of bending vibrations of circular and annular inhomogeneous plates is considered within the framework of Timoshenko's hypotheses, taking into account the viscoelastic (rheological) properties of the material. The material rheology is described by the three-parameter viscoelastic Zener type model (also known as the Standard Linear Solid model) employing instantaneous and long-term constitutive moduli, as well as the relaxation time. For the formulation of the governing equations the Volterra correspondence principle and the concept of complex modules were used. For the both types of plates, a method is proposed for solving the corresponding direct (forward) problems for determining the vibrations using a weak formulation, based on the Galerkin method, and taking into account that the functions involved are complex-valued.The proposed method is verified by a comparison of the results of calculating the plate deflection with the analytical solution in the case of homogeneous prestressed plates. The influence of the prestress level on the amplitude-frequency characteristics is analyzed in order to identify the most effective modes of acoustic sounding.

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Modeling the Nonlinear Deformation and Damage of Carbon-Aramid Fabric Composites in Tension

Leshkov

Сапожников

2020

Mech Compos Mater

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Designing the Structure of a Pressure Vessel Wall Made of a Layered Composite Material with Nonproportional Changes in Stress Components

Cited by 4 publications

References 16 publications

Mechanical Study of Carbon Fiber Reinforced Plastic and Thin-walled Metal Liner in Bi-Material COPV Based on Grid Theory Optimization

Mechanical Study of Carbon Fiber Reinforced Plastic and Thin-walled Metal Liner in Bi-Material COPV Based on Grid Theory Optimization

Identification of Prestress in Inhomogeneous Viscoelastic Timoshenko Plates

Modeling the Nonlinear Deformation and Damage of Carbon-Aramid Fabric Composites in Tension

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