Water tank modelling of variations in inversion breakup over a circular city

Fan, Yifan; Hunt, J. C. R.; Wang, Qun; Yin, Shi; Li, Yuguo

doi:10.1016/j.buildenv.2019.106342

Cited by 17 publications

(10 citation statements)

References 54 publications

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“…Computer simulation can significantly reduce the time for research, compared with full-scale experiments. Article [6] reports the results of modeling the operation of metal tanks filled with water. Study [7] describes a procedure of numerical analysis of the composite structure under the operational loads associated with transportation.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Strength analysis of prestressed vertical cylindrical steel oil tanks under operational and dynamic loads

Tursunkululy

Zhangabay

Аврамов

et al. 2022

EEJET

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This paper reports a study into the effect of the winding type on the stressed-strained state of the wall of a steel cylindrical tank filled with oil to the predefined level. The shapes of free oscillations of oil in the tank and the effect of the winding type on the natural frequencies of the structure were analyzed. Stress in the tank wall was estimated on the basis of finite-element simulation of the deformation of a three-dimensional structural model under the influence of distributed oil pressure on the inner surface of the wall and stresses on the outer surface of the wall. The stresses were induced by the winding of various types, taking into consideration the level of oil loading, the winding step of the winding, and the mechanical characteristics of the thread. The stressed-strained state of a cylindrical tank with winding was investigated at its full filling with oil, half-filling with oil, and without oil. Three winding options were simulated: single, double, and triple intervals. Two types of winding were considered: made from high-strength steel wire and made from composite thread. It was established that when winding the tank wall with steel wire at a triple interval, the stress in the structure does not exceed 34.2 % of the yield strength. At the same time, the height of oil loading does not significantly affect its strength. Applying a composite thread leads to an increase in the stress of up to 47.2 % of the yield strength but makes it possible to reduce the mass of the tank with winding. When winding with a composite thread at a triple interval, the mass of the structure increases by only 3.6 %. The results reported here make it possible to effectively use pre-stress in order to improve the strength and dynamic characteristics of the studied structures, taking into consideration their windings made of different materials

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Strength analysis of prestressed vertical cylindrical steel oil tanks under operational and dynamic loads

Tursunkululy

Zhangabay

Аврамов

et al. 2022

EEJET

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“…Paper [16] reports the results of modeling the operation of steel cylindrical tanks filled with liquid. Study [17] describes the procedure of numerical analysis of the composite structure under the operational loads associated with the transportation of tanks.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…At the same time, there is no method of calculation to be effectively used in studies of the features of the stressed-strained state of the walls of tanks with local curvature in the zones of mounting joints. In the cited works [16][17][18][19][20][21][22][23][24][25], the presence of stress concentration in the zone of the vertical welded mounting joint was directly or indirectly revealed. However, none of the procedures gives a clear definition of the presence of stress concentration, there is no list of parameters affecting the concentration of stresses.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Estimating the stressed-strained state of the vertical mounting joint of the cylindrical tank wall taking into consideration imperfections

Suleimenov

Zhangabay

Abshenov

et al. 2022

EEJET

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Based on the use of a multi-level mathematical model, this paper estimates the stressed-strained state of a cylindrical reservoir in the mounting joint and considers the concentration of stresses in the joint zone. The correctness of the selected mathematical model was verified to show that for an engineering assessment of the stressed-strained state of the wall of a cylindrical tank with variable thickness, it is possible to use the ratios for a cylindrical shell with a constant wall thickness. The spread of values is no more than 1 %, which indicates the proper selection of the mathematical model. A numerical assessment of the stressed-strained state in the zone of the mounting joint proved the assumption of significant stress concentrations in the zone and indicated the determining effect exerted on the concentration of stresses by its geometric dimensions. The concentration of stresses in the joint zone of the tank wall was investigated at various sizes in the ANSYS programming environment. The result of calculating the stressed-strained state of the reservoir for various values of the dent parameters f/t and is the constructed polynomials that approximate the stress concentration coefficient Kσ. As a result of the calculations, an interpolation polynomial and an approximating stress concentration coefficient were derived, which could be used to assess the strength, durability, residual life of the tank and to normalize the limiting dimensions of the imperfection of the joint. This paper reports comparative results of the calculations of the stress concentration coefficient depending on the geometric dimensions of the imperfection of the mounting joint in the ANSYS software package, as well as using an interpolation polynomial. The results could be used to assess the strength and residual life of such structures.

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“…The need to operate such structures for oil storage and transportation does not exclude the occurrence of accidents or unforeseen technical shutdowns as a result of problems caused by malfunctions during operation, aging of the structure and various deformations, which demonstrated the need for additional studies of the strength of steel shells and the implementation of new engineering solutions. The works [ 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 ] present the results of studies, including the modeling of shell structures under various static and dynamic loads, where studies were also carried out taking into account the deformations of the shell body (pipelines, reservoirs, cisterns, etc.). In the studies [ 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 ], work was carried out to study the effect of damage and defects in steel wrappings on the stiffness and natural frequencies of prestressed pipes as well as the characteristics of metals.…”

Section: Introductionmentioning

confidence: 99%

“…The results of the above works [ 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 ] show the general issues of construction and design of steel structures with and without prestressing shells.…”

Section: Introductionmentioning

confidence: 99%

Experimental Analysis of the Stress State of a Prestressed Cylindrical Shell with Various Structural Parameters

et al. 2022

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The paper presents the results of experimental studies of the features of the operation of prestressed shells, taking into account the various structural parameters of the prestress. It is established that when the winding angle changes from perpendicular to the shell axis to 75° and 65°, the circumferential stresses decrease 1.4 times and 1.2 times, respectively, and the axial stresses increase five and three times, which are two and four times lower than the circumferential, from which it can be concluded that the reduction in the winding angle to the longitudinal the axis of the shell has a positive effect on the stress state of the structure. The study also found that with an increase in the diameter of the winding wire from 1 to 2 mm and a change in the winding angle, the same nature of the stress distribution is observed, but the values of the stress state parameter change, so the efficiency increases up to 25% due to an increase in the winding thickness, depending on the pitch, angle and thickness of the winding, which favorably affects the strength and the bearing capacity of the structure as a whole by increasing the value of the stress state parameter. Thus, the results of the analysis will allow us to use in more detail the possibility of controlling the stress–strain state of the prestressed shell by changing the design parameters, and the results obtained can be used in design or construction, as well as when increasing the strength characteristics of the structure, which allows us to create a high-tech design optimal for these operating conditions, which can positively complement the studies conducted earlier in this direction.

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Water tank modelling of variations in inversion breakup over a circular city

Cited by 17 publications

References 54 publications

Strength analysis of prestressed vertical cylindrical steel oil tanks under operational and dynamic loads

Strength analysis of prestressed vertical cylindrical steel oil tanks under operational and dynamic loads

Estimating the stressed-strained state of the vertical mounting joint of the cylindrical tank wall taking into consideration imperfections

Experimental Analysis of the Stress State of a Prestressed Cylindrical Shell with Various Structural Parameters

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