Nonlinear elastic–plastic stress investigation for two interacting 3‐D cracks in offshore pipelines

Zhang, Y. M.; Ariffin, Mohammad Zaidi; Xiao, Zhongmin; Zhang, W. G.; Huang, Zhi Wei

doi:10.1111/ffe.12259

Cited by 18 publications

(5 citation statements)

References 27 publications

(43 reference statements)

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“…In terms of the influence of vibrational loading on a cracked component [12][13][14][15] have considered this problem. Previously, Zhang [16,17] used Crack-Tip Opening Displacement (CTOD) to perform 3-D FEA on a circumferentially cracked pipe containing a semi-elliptical surface crack and an elliptical embedding crack. A 3-D elastic-plastic analysis of the interaction behaviors of two collinear cracks was performed.…”

Section: Introductionmentioning

confidence: 99%

Interaction Assessment of Stress Intensity Factors of Surface Cracks on Thick Cylinders under Tension Force and Bending Moment

Omar Mohammed Al-Moayed,

Johan M.F,

Al Emran Ismail

et al. 2024

ARAM

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From an engineering perspective, hollow cylinders have various applications in the industry due to their strength, versatility, and geometric properties, making them vital for various applications in diverse industries. Therefore, it could be seen in many aspects such as fluid conveyance, manufacturing and fabrication, rotating machinery, structural components, storage, and pressure vessels. As it is well-known fracture is the most dominant type of failure in cylinders that is caused by defects or flaws. With time, these cracks (flaws) may extend and lead to a tragic failure, posing significant risks to both the nearby environment and humans. Moreover, crack cooperation which is known as (crack interaction) represents a chief apprehension, where cooperation or interaction may accelerate the crack growth and cause unpredictable failure. In this work, a wide variety of crack configurations were examined to quantify the interaction of double-interacting surface cracks located on a thick cylinder numerically via ANSYS software. The Stress Intensity Factor (SIFs) has been utilized as a driving force to describe the crack interaction. The results found that crack interaction influenced both cracks by the same rate, and SIFs distributed along the crack front by the same style as that of a single crack. Also, an inversely proportional relationship has been found between the crack interaction and the separation distance between the cracks. It is possible to conclude that the crack interaction of double interacting cracks exhibited a shielding effect, where SIFs for the case of double cracks were less than those of single crack.

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Section: Introductionmentioning

confidence: 99%

Interaction Assessment of Stress Intensity Factors of Surface Cracks on Thick Cylinders under Tension Force and Bending Moment

Omar Mohammed Al-Moayed,

Johan M.F,

Al Emran Ismail

et al. 2024

ARAM

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“…By the means of crack interaction, the cracks being deeper, the more critical they are, which could lead to crack propagation. In addition, (Y. M. Zhang et al 2015) and (Y. Zhang, Fan, and Xiao 2016) performed 3-D FEA on a circumferentially cracked hollow cylinder with one semi-elliptical surface crack and an elliptical embedded crack by Crack-Tip Opening Displacement (CTOD).…”

Section: Introductionmentioning

confidence: 99%

Interaction of double parallel cracks located on a hollow cylinder

Al-Moayed,

Ismail,

Kareem

et al. 2023

Lat. Am. j. solids struct.

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Due to the extensive usage in the industry, the structural integrity of hollow cylinders is seen as a critical goal for stakeholders. Fracture is the most common failure mode for cylinders, which occurs due to crack propagation. Cracks can be found in single or multiple forms; when numerous, crack interaction occurs, which can exacerbate pressures beyond the material's resistance. This work uses Ansys software to examine double parallel interacting surface cracks on a hollow cylinder. The stress intensity factor (SIF) was used to describe the driving force that was used to characterize crack interaction for various crack geometries. To conduct extensive research, this study evaluated a wide range of crack aspect ratios as well as the relative depth of the crack. The findings of this study indicated that the shielding effect demonstrated parallel crack interaction. In addition, an empirical mathematical approach for predicting SIFs for double parallel cracks via single crack SIFs has been developed. The validation of the proposed model using performance evaluation metrics revealed an acceptable rate of error of less than 5%.

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“…The hazardous subsea pipeline accidents caused by corrosion, 65% were because of external corrosion, many researchers have investigated the collapse of subsea pipelines due to corrosion [1][2][3][4]. Once local collapse initiated, the circular cross-section of the pipe transforms into a dogbone shape, and eventually a flat shape (causing shutdown of the pipeline), as the buckle rapidly propagates along the pipeline [5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%