Joint strength of gasketed bolted pipe flange joint under combined internal pressure plus axial load with different (industrial and ASME) bolt-up strategy

Khan, Niaz Bahadur; Abid, Мuhammad; Jameel, Mohammed; Wajid, Hafiz Abdul

doi:10.1177/0954408915614460

Cited by 8 publications

(4 citation statements)

References 16 publications

(30 reference statements)

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“…Stress variation in gasketed and nongasketed flange joints have also been compared using numerical analysis as well as through experimental study [7,8]. The effects of different bolt tightening strategies on the strength of the joint have been discussed without the application of internal pressure [9] as well as under the joined action of pressure and axial load [10]. The impact of bending load and internal pressure on the joint integrity has also been studied with axial loading [11] as well as without axial loading for both single and double gasket joints [12].…”

Section: Introductionmentioning

confidence: 99%

Combined loading performance analysis of gasketed bolted flange joints with emphasis on bolt scattering

Kamran Khan,

Ahmed

2023

JMES

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Gasketed bolted flange joints (GBFJ) are commonly used in various industries however, their failure could result in significant losses not only in terms of financial but human life as well. Most of the work present on the performance of the GBFJ involves simplified assumptions by neglecting the effect of bolt scatter. Also, there is a paucity of studies investigating the sealing performance of GBFJ under combined thermal transient and structural loading. In the present study, two different flange sizes of ANSI B16.5 pressure class 900 (4in. and 6in.) are evaluated, using a detailed three-dimensional finite element analysis (FEA). ASME bolt tightening scheme was applied for the preloading of the bolts. Higher bolts and gasket stresses were observed in the case of 6in. flange joint. Also, greater variation in bolt stresses (up to 18 % of the target value) was observed for the 6 in. model which may be due to higher number of bolts resulting in greater scattering phenomena. Both models were found to be safe under the structural loading. However, large relaxation in stresses was observed at high bulk temperature. The gasket stress in 4in. flange model was observed to be less than the minimum seating stress (69 MPa) at temperatures greater than 300 °C implying possible leakage. However, stresses in the 6in. model stayed within the safe limit throughout the thermal and structural loading due to higher bolt target stresses, resulting in its proper seating even at higher temperatures.

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Section: Introductionmentioning

confidence: 99%

Combined loading performance analysis of gasketed bolted flange joints with emphasis on bolt scattering

Kamran Khan,

Ahmed

2023

JMES

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“…10,11 Thus, standards suggest performing the assembly process in multiple passes, increasing the tightening loads gradually, in order to obtain the target uniform load distribution. [12][13][14][15][16] Unfortunately, this strategy is very costly because of the large number of passes that are needed. In this sense, the elastic interaction coefficients method (EICM), [17][18][19][20][21] enables to calculate an optimized tightening sequence to obtain uniform bolt load distribution in one-pass or two-pass sequences.…”

Section: Introductionmentioning

confidence: 99%

Generalization of the tetraparametric assembly method for the optimization of bolt tightening sequences in ring-type joints

Coria

Abasolo

Aguirrebeitia

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part E:

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Uniform bolt load is critical to achieve leak-free service in pressure vessel gasketed joints. In a previous work, the authors presented the tetraparametric assembly method, which enabled to obtain a uniform final load distribution in a one-pass tightening sequence. The accuracy of the method was proved by finite element analysis and experimental tests. However, the tetraparametric assembly method was only developed for one-pass tightening sequences, and in some cases more than one pass can be necessary. Furthermore, the method was only validated for a particular joint geometry. In this sense, the present work generalizes the method for two-pass tightening sequences and studies the range of application.

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“…Researchers [14][15][16][17][18][19][20] have concluded that under additional axial loading in addition to the internal pressure, the performance of the joint is significantly affected. Abid et al [21][22][23][24] under combined internal pressure and variable temperature (static and transient) loading concluded that thermal loading becomes dominant for the failure of gasketed joint performance.…”

Section: Introductionmentioning

confidence: 99%

Thermal buckling of cylindrical shell with temperature-dependent material properties: Conventional theoretical solution and new numerical method

Wang

Han

Nash

et al. 2018

Mechanics Research Communications

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In this paper the strength and sealing performance of a gasketed bolted flanged pipe joint is studied under bolt up and combined operating conditions using 3D nonlinear finite element analysis. The key combinations of internal pressure, axial and thermal loading are considered. The strength of the joint is seen to be affected by the axial and thermal loading combination whereas the joint sealing is seen to be dependent on the bolt up strategy during assembly and is slightly affected under pressure but only partially affected under axial loading in certain locations. Thermal loading was also considered and was found to have a significant effect on the sealing performance up to 100 o C, but beyond that no sealing was observed, resulting in the possibility of leakage and hence increasing the risk of overall joint failure. Finally, the joint load capacities are determined under various combined loadings showing its safe and unsafe operational limits.

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Joint strength of gasketed bolted pipe flange joint under combined internal pressure plus axial load with different (industrial and ASME) bolt-up strategy

Cited by 8 publications

References 16 publications

Combined loading performance analysis of gasketed bolted flange joints with emphasis on bolt scattering

Combined loading performance analysis of gasketed bolted flange joints with emphasis on bolt scattering

Generalization of the tetraparametric assembly method for the optimization of bolt tightening sequences in ring-type joints

Thermal buckling of cylindrical shell with temperature-dependent material properties: Conventional theoretical solution and new numerical method

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