Investigation of stress intensity factor for internal cracks in FG cylinders under static and dynamic loading

Shariati, Mahmoud; Rokhi, Masoud Mahdizadeh; Rayegan, H.

doi:10.3221/igf-esis.39.17

Cited by 8 publications

(4 citation statements)

References 22 publications

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“…Exponential function employed to describe the variation of properties in the study. Shariati and Rokhi [20] have used the extended FEM to analyse the internal crack in an FG cylinder by a power-law function model. In the continuation, Elahi and Rokhi [9] analyzed the thermal loading induced SIFs in this problem.…”

Section: Introductionmentioning

confidence: 99%

Analysis of stress intensity factors for functionally graded cylinders with multiple longitudinal cracks using finite element method

Nabavi

Rekavandi

2019

ACM

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In this paper, the cracked thick-walled functionally graded cylinder has been analyzed using the finite element method. The internally pressurized cylinder contains fully longitudinal cracks. The analyses have been done with two, four, six and eight longitudinal cracks at the inner surface of the cylinder in four different conditions. For this purpose, using the USDFLD subroutine coding in ABAQUS software, the variations of properties of the functionally graded material are considered based on a power-law function model in the cracked cylinder. The inner and outer surfaces of the cylinder are made of aluminium oxide and titanium carbide respectively. The continuous composition of the two materials has been considered in the form of varying elastic modulus and Poisson's ratio along the radial direction as the power-law function. The J-integral has been used to calculate the stress intensity factors, taking into account the variable properties at the crack tip. The effect of non-homogeneity of the properties, the number of the cracks and cracks' relative depth on the stress intensity factors have been evaluated. The results have been compared with those of other available literature to verify the finite element modelling, in which very good agreement has been found. The results show that similar to the isotropic cylinder with multiple longitudinal cracks, in the cylinder of functionally graded material, the two-crack model has the highest amount of stress intensity factors and the variation of Poisson's ratio has to be taken into account in the shallow cracks.

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Section: Introductionmentioning

confidence: 99%

Analysis of stress intensity factors for functionally graded cylinders with multiple longitudinal cracks using finite element method

Nabavi

Rekavandi

2019

ACM

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“…According to the Fourier heat conduction law, equation (2) can be rewritten in cylindrical coordinates as follows:…”

Section: Governing Equationsmentioning

confidence: 99%

“…FGMs can be used in the construction of tanks and cylindrical furnace, such as cement kiln. Circumferential cracks are occasionally developed in cylindrical structures during service or production [2].…”

Section: Introductionmentioning

confidence: 99%

“…Nabavi and Kamyab [14] determined the closed-solution of thermal stress intensity factors using weight function in a thick wall cylinder with circumferential crack. Shariati et al [15] investigated SIFs four cylinders with circumferential crack made of functional material under dynamic and static loading. The Galerkin method was employed to discretize the motion equations.…”

Section: Introductionmentioning

confidence: 99%

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Calculation of Stress Intensity Factor for an Internal Circumferential Crack in a Rotating Functionally Graded Thick-Walled Hollow Circular Cylinder under Thermal Shock

Elahi

Rokhi

2017

Archive of Mechanical Engineering

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In this article, the fracture behavior of functionally graded thick-walled cylinder under thermo-mechanical shock is investigated. For this purpose, classical coupled thermoelastic equations are used in calculations. First, these equations are discretized with extended finite element method (XFEM) in the space domain and then they are solved by the Newmark method in the time domain. The most general form of interaction integral is extracted for axially symmetric circumferential crack in a cylinder under thermal and mechanical loads in functionally graded materials and is used to calculate dynamic stress intensity factors (SIFs). The problem solution has been implemented in MATLAB software.

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Research of Stress Intensity Factor and Propagation Life of Crack of Steam Turbine Diaphragm

Yang

Chen

et al. 2022

J Fail. Anal. and Preven.

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Investigation of stress intensity factor for internal cracks in FG cylinders under static and dynamic loading

Cited by 8 publications

References 22 publications

Analysis of stress intensity factors for functionally graded cylinders with multiple longitudinal cracks using finite element method

Analysis of stress intensity factors for functionally graded cylinders with multiple longitudinal cracks using finite element method

Calculation of Stress Intensity Factor for an Internal Circumferential Crack in a Rotating Functionally Graded Thick-Walled Hollow Circular Cylinder under Thermal Shock

Research of Stress Intensity Factor and Propagation Life of Crack of Steam Turbine Diaphragm

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