Ratcheting behaviour of corroded steel tubes under uniaxial cycling: An experimental investigation

Zeinoddini, M.; Peykanu, M.; Varshosaz, Masood; Ezzati, M.; Zakavi, Seyed Javid

doi:10.1016/j.jcsr.2015.06.007

Cited by 30 publications

(3 citation statements)

References 19 publications

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“…The stress cycles' values applied to the structures are sometimes more than their yield strength and bring unwanted damages. [5][6][7][8] These stress cycles, along with the mean stress, create remarkable accumulations of plastic deformation, namely ratcheting, and finally lead to the failure phenomenon. 9 However, the previous decades have witnessed a growing interest in the study of ratcheting behavior in the material; there is still considerable ambiguity regarding this topic because it is a secondary plastic deformation process and progressively occurs cycle by cycle.…”

Section: Introductionmentioning

confidence: 99%

The numerical and experimental analysis of ratcheting behavior for 304 steel sheets under cyclic axial loading

Shahrjerdi,

SafariFard

2023

Advances in Mechanical Engineering

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The present study examines the effect of the thickness, cutouts numbers, and different cutouts shapes on the ratcheting behavior of 304 steel sheets under cyclic axial loading. The cutout shapes considered here are circular, triangular, and square cutouts. The effect of the number of circular cutouts in 304 steel sheets on ratcheting behavior is investigated. The Instron 8502 device is used to perform the experiments in which the cyclic axial loading is applied to six specimens with different cutouts and thicknesses at ambient temperature. The obtained results highlight the fact that reducing the thickness and increasing the number of cutouts in the sheets are attributed to the rise in the ratcheting displacement. Accordingly, the ratcheting displacement is more striking in the sheets with triangular cutouts. Notably, a numerical analysis is considered using the isotropic/kinematic nonlinear hardening model and FEM in ABAQUS software. Since a good agreement is seen between the numerical and experimental results, the analysis conducted in this study is reliable in terms of accuracy and authenticity.

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Section: Introductionmentioning

confidence: 99%

The numerical and experimental analysis of ratcheting behavior for 304 steel sheets under cyclic axial loading

Shahrjerdi,

SafariFard

2023

Advances in Mechanical Engineering

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“…Ratcheting phenomenon was observed in pipes with defects which induced 70% and 80% reduction in thickness subjected to bending moments varied from 30% to 90% of the yield strength of the material. Zeinoddini et al 36 studied the effect of artificially produced rectangular corrosion defects on the ratcheting response of a steel tube under axial cyclic loads. According to their findings, the ratcheting strain had an exponential behavior in the defect zone, while it showed a linear behavior in intact sites of the tube.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical analysis of ratcheting behavior of A234 WPB steel elbow joints including corrosion defects

Moradi

Shariati

Zamani

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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In this paper, ratcheting behavior of intact and corroded 90o elbow pipe specimens of A234 WPB steel is investigated at intrados, crown, and extrados positions. A special fixture was designed and constructed to carry out the fatigue experiments. Then, the effects of fatigue loading parameters (mean and amplitude) and defect depth were examined on ratcheting responses of intact and corroded specimens at intrados, crown, and extrados positions. To simulate the ratcheting behavior of specimens, a finite element analysis was performed based on the combined nonlinear isotropic/kinematic hardening model. As a reasonable agreement was found between the finite element (FE) simulation results and experimental data, the influence of constant internal pressure during the cyclic loading was examined on ratcheting responses through FE simulation. Results indicated that decreasing the load amplitude was more effective on decreasing the ratcheting strain than that of the mean fatigue load. Moreover, the most critical ratcheting response was associated with the intrados location of the pipe. For defective specimens, decreasing fatigue loading parameters resulted in a shakedown behavior for a defect placed at extrados, while, for the defects at intrados and crown, an increasing behavior was observed for the ratcheting strain. It was revealed that, at extrados position, the ratcheting behavior was arrested up to 1 mm defect depth. The ratcheting strains were increased at intrados and crown by increasing the internal pressure, while they were decreased at extrados.

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“…Steel pipes are widely used in machinery and the marine industry, among other fields [1][2][3][4]. They are subjected to internal pressure and a large cyclic bending load, which may incur a ratcheting effect [5].…”

Section: Introductionmentioning

confidence: 99%

Ratcheting Simulation of a Steel Pipe with Assembly Parts under Internal Pressure and a Cyclic Bending Load

Yang

Dai

2019

Applied Sciences

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The ratcheting behavior of a steel pipe with assembly parts was examined under internal pressure and a cyclic bending load, which has not been seen in previous research. An experimentally validated and three dimensional (3D) elastic-plastic finite element model (FEM)-with a nonlinear isotropic/kinematic hardening model-was used for the pipe's ratcheting simulation and considered the assembly contact effects outlined in this paper. A comparison of the ratcheting response of pipes with and without assembly parts showed that assembly contact between the sleeve and pipe suppressed the ratcheting response by changing its trend. In this work, the assembly contact effect on the ratcheting response of the pipe with assembly parts is discussed. Both the assembly contact and bending moment were found to control the ratcheting response, and the valley and peak values of the hoop ratcheting strain were the transition points of the two control modes. Finally, while the clearance between the sleeve and the pipe had an effect on the ratcheting response when it was not large, it had no effect when it reached a certain value.

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Ratcheting behaviour of corroded steel tubes under uniaxial cycling: An experimental investigation

Cited by 30 publications

References 19 publications

The numerical and experimental analysis of ratcheting behavior for 304 steel sheets under cyclic axial loading

The numerical and experimental analysis of ratcheting behavior for 304 steel sheets under cyclic axial loading

Experimental and numerical analysis of ratcheting behavior of A234 WPB steel elbow joints including corrosion defects

Ratcheting Simulation of a Steel Pipe with Assembly Parts under Internal Pressure and a Cyclic Bending Load

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