Finite element analysis of cylindrical pressure vessels having a misalignment in a circumferential joint

Brabin, T. Aseer; Christopher, T.; Rao, B. Nageswara

doi:10.1016/j.ijpvp.2010.02.004

Cited by 22 publications

(6 citation statements)

References 4 publications

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“…The results obtained from the experimental investigation substantiated the theoretical findings. Aseer Brabin [10] predicted the structural behavior at the regions of discontinuity in pressure vessels by comparison of FE results with the test results of ref [9]. FE results were in good agreement with the test results of ref [9].…”

Section: Introductionsupporting

confidence: 67%

“…I. Lotsberg presented analytical expressions for stress concentration factors in pipes subjected to internal pressure and axial force for a number of design cases based on classical shell theory to predict the fatigue life of the cylindrical shells [7]. Elaborated work is available to address the stress intensification effect caused by weld misalignment [8][9][10]. Peter, for example presented the analytical results in the form of stresses at a circumferential joint in a pressurized circular cylindrical vessel for different types of discontinuity junction geometries [8].…”

Section: Introductionmentioning

confidence: 99%

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Effects of Geometric Misalignment Caused by Girth Weld on Fatigue Behavior of a Cylindrical Pressure Vessel

Abbas

Qayyume

Afridi

2012

AMR

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The paper presents the results of finite element analysis of a pressurized vessel typically made of steel 1025 and containing the weld misalignment at the cylinder-to-cylinder junction. This misalignment considered in the vessel’s structure is because of girth weld that is found in most of the fabrications of such type of structures. Geometric misalignment of 50% of thickness is considered for this particular study. The work evaluates the geometrical effects of misalignment on the fatigue behavior of the pressure vessel to quantify its consequences in term of fatigue life and maximum damage. Finite Element (FE) analysis is performed by the use of ANSYS on one quarter of the structure due to symmetry. A significant effect of misalignment on fatigue life of the cylinder has been found and is presented with maximum anticipated damage in the critical areas.

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Section: Introductionsupporting

confidence: 67%

Section: Introductionmentioning

confidence: 99%

Effects of Geometric Misalignment Caused by Girth Weld on Fatigue Behavior of a Cylindrical Pressure Vessel

Abbas

Qayyume

Afridi

2012

AMR

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“…Weld misalignment influences the structural integrity of a cylindrical pressure vessel; in the most dangerous analysis case, a crack depth of 7 mm and allowable centerline offset of 8 mm resulted in a pressure limit of 3.15 MPa, which is still 0.65 MPa greater than the hydro test pressure [18]. Finite element analysis was conducted on cylindrical pressure vessels with a misalignment in a circumferential joint by Brabin et al [19]. The results showed good agreement with [20].…”

Section: Boundary Conditionsmentioning

confidence: 99%

Mechanical Integrity Analysis of a Printed Circuit Heat Exchanger with Channel Misalignment

Simanjuntak

Lee

2020

Applied Sciences

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Printed circuit heat exchangers (PCHEs), which are used for thermal heat storage and power generation, are often subject to severe pressure and temperature differences between primary and secondary channels, which causes mechanical integrity problems. PCHE operation may result in discontinuity, such as channel misalignment, due to non-uniform thermal fields in the diffusion bonding process. The present paper analyzes the mechanical integrity, including the utilization factors of stress and deformation under various channel misalignment conditions. The pressure difference of the target PCHE is 19.5 MPa due to the high pressure (19.7 MPa) of the steam channel in the Rankine cycle and the low pressure (0.5 MPa) of molten salt or liquid metal in the primary channel. Additionally, the temperature difference between channels is around 25 °C, however the average temperature is around 500 °C. The PCHE has a relatively large primary channel measuring approximately 3 x 3 mm, and a steam channel measuring 2 x 1.5 mm. The finite element method (FEM) is applied to determine the stress by changing the misalignment to below 30% of the primary channel width. It was found that the current PCHE is operable up to 700 °C in terms of the ASME code under these design conditions. Additionally, the change of utilization factor due to the misalignment increases, but is still under the ASME acceptance criteria of 700 °C; however, it violates the criteria at 725 °C, which is the allowable temperature condition. Therefore, the mechanical integrity of the PCHE with low-pressure molten salt or liquid metal and a high-pressure steam channel is acceptable in terms of utilization factor.

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“…Many researchers carried out research regarding pressure vessels. Brabin et al [1] used finite element method to analyze and obtain elastic stress distribution at cylinder -to cylinder junction in pressurized shell structures. Tandon et al [2] also used finite element method to study the changes of natural frequencies of vessel due to cracks.…”

Section: Introductionmentioning

confidence: 99%

Wall Thickness Optimization of High Powered Portable Multifunction Air Compressor Tank Using Finite Element Method

Kurdi

Samat

Adnan

et al. 2014

AMM

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Air compressor tank is the important equipment in the automotive workshops and laboratories. Air compressor can be categorized as pressure vessel. Pressure vessel often has a combination of high pressure together with high temperature, in some cases of flammable fluids or highly radioactive material. Due to hazards, it is crucial to ensure there is no leakage on the products. In addition, vessel has to be design cautiously to cope with the operating temperature and pressure. The thickness of the PMAC should be optimized to get the best performance, the thickness cannot be very large due to the cost of material and exceeded weight and also cannot be very thin due to the failures caused by its internal pressure. In order to get the optimum thickness, finite element method software was used to simulate the stress analysis of PMAC with various thickness and various shapes.

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Finite element analysis of cylindrical pressure vessels having a misalignment in a circumferential joint

Cited by 22 publications

References 4 publications

Effects of Geometric Misalignment Caused by Girth Weld on Fatigue Behavior of a Cylindrical Pressure Vessel

Effects of Geometric Misalignment Caused by Girth Weld on Fatigue Behavior of a Cylindrical Pressure Vessel

Mechanical Integrity Analysis of a Printed Circuit Heat Exchanger with Channel Misalignment

Wall Thickness Optimization of High Powered Portable Multifunction Air Compressor Tank Using Finite Element Method

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