Elasto-Plastic Stress Analysis in Rotating Disks and Pressure Vessels Made of Functionally Graded Materials

Kalali, A.T; Moud, Saied Hadidi; Hassani, Behrooz

doi:10.1590/1679-78252420

Cited by 11 publications

(6 citation statements)

References 18 publications

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“…However, it has been shown that changing these parameters (B r ð Þ, n r ð Þ) has little effect on the strain rate in the Norton equation, 32,51 so in the present work these two parameters are considered constant (B = 4:79 3 10 À22 MPa À6 s À1 , n = 6). 51 By substituting equations (19) and (20) into equation (40), _ e r r i ð Þ and _ e u r i ð Þ are as follows:…”

Section: Creep In Thick-walled Fgm Cylindrical Vesselmentioning

confidence: 99%

“…Evaluation of residual stress distributions in autofrettaged-treated homogenous spherical vessels under different p aut , 9 an analytical study of autofrettage-treated spherical vessels, considering the Bauschinger effect, 10,11 the fatigue life of the vessel during loading and unloading high-pressure cycles (in this study, the fatigue design of a thick-walled Autofrettaged-treated vessel for the food industry, operating at p i = 500 MPa is presented), 12 the analysis of autofrettage of cylinders, 13 and the study of residual stresses and allowable pressure of autofrettaged-treated high-pressure vessels (experimental, numerical, and analytical). 14–23 In applied research, a compound cylinder was introduced to increase the residual stress.…”

Section: Introductionmentioning

confidence: 99%

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Creep of autofrettaged thick-walled FGM cylindrical vessel

Abdolkhani

Hashemian

Aghadavoudi

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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In this research work, the creep of thick-walled cylindrical vessels made of FGM with autofrettaged-treated was investigated using the analytical method. At different plastic depths and a variety of internal pressures for elastic modulus and yield stress constants ( n1 and n4), changes in residual creep strain rate (radial and circumferential) and final creep strain rate are investigated. The obtained results show that the circumferential stresses in the autofrettage have different values depending on the depth of the plastic. In the equivalent stress diagram, the resulting stress at the plastic points of the vessel reaches the yield stress of the FGM, and the stress decreases along the radius. If [Formula: see text] is increased from 1 to 1.8, the maximum creep strain rate decreases (for several n4, the dimensionless plastic depth is equal to 1.8). The results show that up to a dimensionless plastic depth of 1.5, the change in residual strain rate is negligible. The slope of the graphs for the dimensionless depths above 1.6 increases sharply. A comparison of the maximum circumferential stress as a function of plastic depth for the present work and the study by Darijani shows very good agreement between the two studies.

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Section: Creep In Thick-walled Fgm Cylindrical Vesselmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Creep of autofrettaged thick-walled FGM cylindrical vessel

Abdolkhani

Hashemian

Aghadavoudi

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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show abstract

“…[9] used Homotopy Analysis Method (HAM), Adomian Decomposition Method (ADM) and Variational Iteration Method (VIM) under different boundary conditions to provide semi-analytical solutions to the elastic analysis of hollow, functionally graded discs with varying thickness from the center to the ends. [10] and [11] presented a finite element method for elastic-plastic stress solution for a functionally graded rotating disk problem and used Runge-Kutta iteration method as a numerical solution for elasto-plastic stress analysis of rotating disks and pressure vessels made of functionally graded materials. [12] evaluated the elastic deformation analysis of a functionally graded rotating disc using the finite difference method.…”

Section: Introductionmentioning

confidence: 99%

Elastic Stress Analysis of Hyperbolic Rotating Disks via Optimal Homotopy Asymptotic Method

Kutsal¹

2023

IJERMCE

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This study, it is aimed to use an effective approximation method, called Optimal Homotopy Asymptotic Method (OHAM) for elastic stress analysis. This study is carried out with the idea that utilizable of the considered method in many areas and having advantages will add a new perspective to the rotating disc problems that can provide convenience and practicality. The considered disk is an annular disk with both free ends and is subjected to centrifugal force. The thickness variation is assumed as hyperbolic. Deformations occurred on the disk, and radial and tangential stresses are calculated with the proposed method. The approximate solutions are in very good agreement with the exact solution. It is observed that the results converge to exact solutions faster than other approximate methods, like the Improved Adomian Decomposition method, in the literature. The results of this study show that OHAM is a very practical method with fast results for rotating disk problems. The study also shows the advantages of OHAM being directly applicable to differential equations of rotating disks without any transform function. Results by the comparison of approximate results and exact solutions indicated that OHAM can effectively be used in the analysis of rotating variable thickness disks.

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“…Loghman and Shayestemoghadam [ 10 ] obtained history of creep stresses and deformations of a nanocomposite rotating cylinder made of polypropylene reinforced by MWCNTs using Burgers viscoelastic creep model under magneto-thermo-mechanical loadings. Kalali et al [ 11 ] provided an analytical solution for predicting stress components of a strain hardening cylinder based on the von-Mises yield criterion under plane–stress conditions by assuming an isotropic material model. Sharma and Yadav [ 12 ] analyzed thermal creep stresses in thick-walled cylinder with radially varying compressibility under the effect of internal and external pressure.…”

Section: Introductionmentioning

confidence: 99%

Secondary Creep Analysis of FG Rotating Cylinder with Exponential, Linear and Quadratic Volume Reinforcement

et al. 2022

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Creep is an irreversible time-dependent deformation in which a material under constant mechanical stress and elevated temperature for a considerably prolonged period of time, starts to undergo permanent deformation. Creep deformation occurs in three stages namely, primary, secondary and tertiary. Out of these three stages, secondary or steady state creep is particularly an area of engineering interest as it has almost a constant creep rate. Creep deformation plays a significant role in understanding effective service life of an engineering component working under high temperature conditions as such components such as super-heater and re-heater tubes and headers in a boiler, jet engines operating at temperature as high as 1200 ∘C, usually experience a failure or rupture due to creep phenomenon. Design engineers keep a close attention on working stress conditions and elevated temperature under which an engineering component is expected to work as these conditions determine the onset of creep behavior in an engineering component. By recognizing the parameters of material response to creep behavior, engineers can analyse the useful service life and hazardous working conditions for an engineering components. Recognizing the creep phenomenon as high temperature design limitation, ASME Boiler and Pressure Vessel Code have provided guidelines on maximum allowable stresses for materials to be used in creep range. One of the criteria for determination of allowable stresses is 1% creep deformation of material in 100,000 h of service. Thus, the study of creep behavior in engineering components pertaining to high stress and temperature working conditions is very important as it affects the reliability and performance of the engineering components. The aim of our study is to understand the behavior of secondary creep deformation so that an advanced reinforced functionally graded material with better creep resistance, can be designed. In this paper, a secondary creep analysis of functionally graded (FG) thick-walled rotating cylinder under internal and external pressure is conducted. The novelty of the model intends to specify secondary creep stresses and strains by employing exponential, linear and quadratic volume reinforcement for SiCp ceramic in Al metal matrix in radial direction. This will help us to understand the effect of volume reinforcement in FG cylinder under internal/external pressure and rotating centrifugal body force by obtaining secondary creep stresses and strains. The response of the FG cylinder with isotropic material is analyzed and the solution for stress–strain rates in radial and tangential directions are obtained in closed form. Comparison of steady state creep stresses and strains under exponential, linear and quadratic volume reinforcement profiles are discussed and presented graphically.

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Elasto-Plastic Stress Analysis in Rotating Disks and Pressure Vessels Made of Functionally Graded Materials

Cited by 11 publications

References 18 publications

Creep of autofrettaged thick-walled FGM cylindrical vessel

Creep of autofrettaged thick-walled FGM cylindrical vessel

Elastic Stress Analysis of Hyperbolic Rotating Disks via Optimal Homotopy Asymptotic Method

Secondary Creep Analysis of FG Rotating Cylinder with Exponential, Linear and Quadratic Volume Reinforcement

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