Article (Scientific journals)
Linear smoothed extended finite element method for fatigue crack growth simulations
Surendran, M; Natarajan, Sundararajan; Palani, G.S. et al.
2018In Engineering Fracture Mechanics, 206, p. 551-564
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Keywords :
Smoothed finite element method; Linear smoothing; Extended finite element method; Level set method; Numerical integration; Fracture mechanics; Stress intensity factor; Paris’ law; Fatigue crack growth; Cold formed steel
Abstract :
[en] 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.
Disciplines :
Engineering, computing & technology: Multidisciplinary, general & others
Author, co-author :
Surendran, M;  Academy of Scientific and Innovative Research, CSIR-Structural Engineering Research Center, CSIR Campus, Chennai 600107, India
Natarajan, Sundararajan;  Indian Institute of Technology Madras, Chennai 600036, India > Integrated Modelling and Simulation Lab, Department of Mechanical Engineering
Palani, G.S.;  Academy of Scientific and Innovative Research, CSIR-Structural Engineering Research Center, CSIR Campus, Chennai 600107, India
Bordas, Stéphane ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit ; School of Engineering, Cardiff University, CF24 3AA Wales, UK ; nstitute of Research and Development, Duy Tan University, K7/25 Quang Trung, Danang, Viet Nam
External co-authors :
yes
Language :
English
Title :
Linear smoothed extended finite element method for fatigue crack growth simulations
Publication date :
02 November 2018
Journal title :
Engineering Fracture Mechanics
ISSN :
0013-7944
eISSN :
1873-7315
Publisher :
Elsevier, Netherlands
Volume :
206
Pages :
551-564
Peer reviewed :
Peer Reviewed verified by ORBi
Focus Area :
Computational Sciences
Available on ORBilu :
since 23 January 2020

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