Finite Element Analysis of Plastic Collapse and Crack Behavior of Steel Pressure Vessels and Piping Using XFEM

Liu, P. F.; Zhang, B. J.; Zheng, Jinyang

doi:10.1007/s11668-012-9623-8

Cited by 29 publications

(4 citation statements)

References 28 publications

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“…However, in both studies performed by Lin et al [49] and Agbo et al [50], the size of mesh was chosen in a way to provide an optimal balance between computational speed and accuracy to predict failure in pipelines using XFEM. Additionally, Liu et al [52] performed a mesh sensitivity using XFEM to predict failure for X65 pipeline materials, and they determined the critical mesh size through an equation to ensure the computational efficiency and accuracy. XFEM results in the present study also show mesh sensitivity but they are less significant in comparison to FEM results.…”

Section: Resultsmentioning

confidence: 99%

A Unified Fracture Model for X65 Pipeline Material Under Various Constraints Using the Extended Finite Element Method (XFEM)

Shahzamanian

2024

Journal of Pressure Vessel Technology

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It is generally accepted that the fracture strain is dependent on geometry/constraints in metals. However, the current available implementation of XFEM assumes a fixed fracture strain criterion independent of the constraints. The objective of this paper is to develop and implement a variable fracture strain criterion in XFEM that is capable of predicting a wide range of fracture conditions in X65 pipeline steels with various crack tip constraints. Various small-scale tests with different out of plane constraints obtained from the literature were simulated using the XFEM in ABAQUS software. For each test, the value of the maximum principal strain (Maxpe) as a fracture initiation criterion in the cohesive zone model (CZM) in XFEM framework was varied while keeping the fracture energy constant until the model was able to accurately replicate the reported experimental results. For each test, the crack tip constraints were characterized and the stress triaxialities and Lode angle parameters at the onset of fracture initiation were calculated from the models. The results allowed expressing the fracture strain as an explicit function of stress triaxiality which was then implemented in ABAQUS XFEM using UDMGINI subroutine. For the sake of comparison, the tests were simulated in finite element method (FEM) using a similar damage initiation model namely, the Johnson-Cook (J-C) model. A single model in XFEM was able to accurately replicate the experimental observations for all specimens and compared well to experiments in the way simulated by FEM damage model.

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Section: Resultsmentioning

confidence: 99%

A Unified Fracture Model for X65 Pipeline Material Under Various Constraints Using the Extended Finite Element Method (XFEM)

Shahzamanian

2024

Journal of Pressure Vessel Technology

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“…Thus, the crack propagates when the stress exceeds the maximum principal stress, in a direction orthogonal to the maximum principal stress. Previous studies by Liu et al (2012) show that a better correlation between numerical and experimental results is achieved when the maximum principal stress is set to the value of the tensile strength of the material. Thus, the same criterion is adopted in this paper.…”

Section: Yield Strength (Mpa) 276mentioning

confidence: 98%

Scaled cohesive zone models for fatigue crack propagation

Davey

Darvizeh

Akhigbe-Midu

et al. 2022

International Journal of Solids and Structures

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“…It was shown that XFEM could effectively simulate the crack growth process. Liu et al (2012) studied plastic collapse and crack propagation in a steel pressure vessels and piping using the XFEM. Moreover, the crack initiation and propagation properties of buried pipelines due to deflection in the landslide area where analysed with XFEM.…”

Section: Introductionmentioning

confidence: 99%

Fracture mechanics testing and crack propagation modelling in polypropylene pipes

Barsoum

Almansoori

Almazrouei

et al. 2020

IJSI

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PurposeThe main aim of this study is to determine the fracture toughness and accordingly to predict the fracture initiation, crack propagation and mode of crack extension accurately in polypropylene subsea pipes subjected to internal pressure.Design/methodology/approachTensile test was performed following the ISO 527–1 standard. An elastic-plastic constitutive model was developed based on the tensile test results, and it is implemented in the FEA model to describe the constitutive behaviour of the polypropylene material. Three-point bend tests with linear-elastic fracture mechanics (LEFM) approach were conducted following ISO-13586 standard, from which the average fracture toughness of the polypropylene pipe material in crack-opening mode was found as KIc = 3.3 MPa√m. A numerical model of the experiments is developed based on the extended finite element method (XFEM), which showed markedly good agreement with the experimental results.FindingsThe validated XFEM modelling approach is utilised to illustrate its capabilities in predicting fracture initiation and crack propagation in a polypropylene subsea pipe subjected to an internal pressure containing a semi-elliptical surface crack, which agrees well with existing analytical solutions. The XFEM model is capable of predicting the crack initiation and propagation in the polypropylene pipe up to the event of leakage.Originality/valueThe methodology proposed herein can be utilised to assess the structural integrity and resistance to fracture of subsea plastic pipes subjected to operational loads (e.g. internal pressure).

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Finite Element Analysis of Plastic Collapse and Crack Behavior of Steel Pressure Vessels and Piping Using XFEM

Cited by 29 publications

References 28 publications

A Unified Fracture Model for X65 Pipeline Material Under Various Constraints Using the Extended Finite Element Method (XFEM)

A Unified Fracture Model for X65 Pipeline Material Under Various Constraints Using the Extended Finite Element Method (XFEM)

Scaled cohesive zone models for fatigue crack propagation

Fracture mechanics testing and crack propagation modelling in polypropylene pipes

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