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Linear smoothed extended finite element method for fatigue crack growth simulations
M. Surendran, , G.S. Palani, Stéphane P.A. Bordas
Published in Elsevier Ltd
2019
Volume: 206
   
Pages: 551 - 564
Abstract
In this paper, the recently proposed linear smoothed extended finite element method (LSmXFEM) is employed to simulate the fatigue crack growth. Unlike the conventional extended finite element method, the LSmXFEM does not require special numerical integration technique to integrate the terms in the stiffness matrix. The stress intensity factors (SIFs) are evaluated by using the domain form of the interaction integral technique. The fatigue crack growth rate is evaluated using the generalized Paris’ law in conjunction with the maximum hoop stress criterion. The robustness of the method is demonstrated with a few examples for which the results are available in the literature. Then, the fatigue crack growth from the numerical simulation is compared with the experimental investigations performed on CR5 grade cold formed steel. It is seen that the fatigue life and the crack path obtained from the proposed method is in close agreement with the experimental observation. © 2018 Elsevier Ltd
About the journal
JournalData powered by TypesetEngineering Fracture Mechanics
PublisherData powered by TypesetElsevier Ltd
ISSN00137944
Open AccessNo
Concepts (16)
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    Cracks
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    Fatigue crack propagation
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    Fatigue of materials
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    FRACTURE MECHANICS
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    Growth rate
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    Numerical methods
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    Stiffness matrix
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    Stress intensity factors
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    Studs (structural members)
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    Cold-formed steel
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    EXTENDED FINITE ELEMENT METHOD
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    Level set method
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    LINEAR SMOOTHING
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    Numerical integrations
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    SMOOTHED FINITE ELEMENT METHOD
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    Finite element method