A novel stress distribution analytical model of O-ring seals under different properties of materials

Wu, Di; Wang, Shaoping; Wang, Xingjian

doi:10.1007/s12206-016-1231-1

Cited by 21 publications

(10 citation statements)

References 20 publications

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“…The inner sealing ring is activated by the inner flange (6) that is connected to the pressure armor (9). The outer sealing ring (11) is activated by the outer flange (12) that is connected to the outer casing. The tensile armor wires (7) are anchored by filling the internal voids of the end fitting with epoxy resin.…”

Section: Structure Of Flexible-pipe Ending Fittingmentioning

confidence: 99%

“…Hu et al [10] established a twodimensional axisymmetric model of the inserted sealing ring and considered how various system parameters and operating conditions influence the sealing performance; they concluded that the concentration of stress at the shoulder and the inner vertex of the sealing ring directly affects the life of the sealing ring, and they proposed a new design with optimized geometric parameters. Zhou et al [11] and Wu et al [12] studied the sealing performance of O and wedge rings, respectively, which are commonly used in engineering. The former used numerical finite-element (FE) simulation, while the latter was more theoretically inclined and proposed a novel stress-distribution analytical model.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Unbonded Flexible Pipe Under Internal Pressure

2017

Advances in Pipes and Pipelines

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The sealing performance of end fittings is very important for offshore oil and gas pipelines. To investigate the sealing behavior of a ring-shaped wedge seal, global and local numerical models of the ringpipe interaction have been developed based on the finite-element method. First, the sealing process of the ring under pressure is simulated. Second, a criterion for the penetration of fluid pressure is applied in these models to assess how the sealing capacity changes along the contact surface. Finally, the contact magnitude of interference and the shape of the sawtooth heaves on the sealing ring are predicted and compared. The results show an interesting concentration of von Mises stress in the sealing ring and also that the peak contact pressure appears in the sealing zone. However, the penetration of fluid pressure has obvious effects on the distributions of von Mises stress and contact pressure. The best sealing performance is when the axial displacement of the sealing ring is 1.4 mm and the contact magnitude of interference is 0.3 mm. Given the sawtooth heave of sealing ring, semicircular heave gives the better sealing capacity compared with trapezoidal heave.

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Section: Structure Of Flexible-pipe Ending Fittingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Unbonded Flexible Pipe Under Internal Pressure

2017

Advances in Pipes and Pipelines

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“…Therefore, the theoretical analysis and experimental research on rubber seal performance have received extensive attention in recent years. [1][2][3][4] Wang et al established a finite element model (FEM) of the performance analysis of the globe-cone seal by considering the stress-relaxation effect, and the variation rule of the residual pre-tightening stress of the nut and contact stress between the globe and the cone with increasing creep time was obtained by the model. Based on this, the calculation formula of the leakage rate of the globe-cone seal by considering the stress-relaxation effect was deduced by the leakage model, which is proposed by Roth.…”

Section: Introductionmentioning

confidence: 99%

Research on micro-leakage performance of the rubber seal

Sun

Hao

Song³

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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For the manned International Space Station, the more stringent requirements of the leakage performance of the rubber seal, which is located in it, is presented. The leakage is caused by the small leakage paths between contact pairs of the rubber seal. Therefore, it is necessary that the micro-leakage performance analysis between interfaces of the rubber seal is carried out. Based on this, the finite element model (FEM) of macroscopic contact performance analysis of the rubber seal is established first, and the macroscopic contact pressure and contact width of the rubber seal are calculated by the model. Then, the micro-leak path model is constructed based on the contact width and surface micro-structure, and the cross-sectional area of the micro-leakage path is obtained, when the contact pressure is acted on the model. Therefore, the fluid flow states in the micro-leakage path are determined, and the flow conductance and the seal leakage rate of rubber seal are all calculated. Finally, the micro-leakage model of the rubber seal is modified to improve the theoretical calculation accuracy by the experiment.

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“…For example, the rubber sealing ring is one of the most widely used kind of seals, as the main sealing elements and auxiliary sealing elements. [9][10][11][12] Generally, the seals are always stored for a period of time, before put into use, especially in aeronautic and aerospace engineering. 13 The performance of the rubber sealing rings continuously degenerates with the aging of rubber material during storage in air.…”

Section: Introductionmentioning

confidence: 99%

Bayesian model averaging based storage lifetime assessment method for rubber sealing rings

Liu

Wang

Zhang

et al. 2019

Advances in Mechanical Engineering

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Rubber sealing ring is one of the most widely used seals. It is always stored for a period of time before put into use, especially in aeronautic and aerospace applications. It is necessary to evaluate the storage lifetime of rubber sealing rings. However, due to the long storage lifetime of rubber sealing rings, two issues need to be handled, including model uncertainty and lack of storage lifetime data. A Bayesian model averaging based storage lifetime assessment method for rubber sealing rings is proposed in this article. The Gamma distribution model and Weibull distribution model are selected as the candidate models and combined based on Bayesian model averaging method. The Bayesian model averaging method is applied to handle the model uncertainty. Considering the lack of storage lifetime data, the degradation data are utilized to give the priors of model probability and distribution parameters based on the similarity principle. The results indicate that the proposed method has smaller minus log-likelihood value and is better than the other discussed method, considering both goodness of fit and complexity.

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A novel stress distribution analytical model of O-ring seals under different properties of materials

Cited by 21 publications

References 20 publications

Unbonded Flexible Pipe Under Internal Pressure

Unbonded Flexible Pipe Under Internal Pressure

Research on micro-leakage performance of the rubber seal

Bayesian model averaging based storage lifetime assessment method for rubber sealing rings

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