Print Email Facebook Twitter Mixed-mode fatigue crack propagation simulation by means of Geq and walker models of the structural steel S355 Title Mixed-mode fatigue crack propagation simulation by means of Geq and walker models of the structural steel S355 Author Xin, Haohui (Xi’an Jiaotong University) Liu, Jielin (Xi’an Jiaotong University) Correia, J.A.F.O. (TU Delft Engineering Structures; Xi’an Jiaotong University; Universidade do Porto) Berto, Filippo (Xi’an Jiaotong University; Norwegian University of Science and Technology (NTNU)) Veljkovic, M. (TU Delft Steel & Composite Structures) Qian, Guian (Beijing Institute of Mechanical and Electrical Engineering) Department Engineering Structures Date 2023 Abstract In this paper, a numerical simulation method of mixed-mode fatigue crack propagation was explored using the extended finite element method (XFEM) and the Virtual Crack Closure Technique (VCCT). Both 2D and 3D numerical models were selected to simulate the fatigue crack propagation of steel specimens. Two coefficients were proposed to calculate the equivalent energy release rate (Geq) for a better simulation of the mixed-mode fatigue crack propagation of S355 steel. The Walker equation and the calculation formula of Geq were realized by a user-defined subroutine. A set of optimal correction coefficients of mode II energy release rate (GII) and mode III energy release rate (GIII) were quantitatively comparing the simulation results and test data. The results will contribute to fatigue crack propagation prediction of steel structures in the civil engineering field. Subject Equivalent energy release rate ()Extended finite element method (XFEM)Mixed mode fatigue crack propagationVirtual Crack Closure Technology (VCCT)Walker equation To reference this document use: http://resolver.tudelft.nl/uuid:9fc92de9-2f32-426e-b79b-cf60b1e72790 DOI https://doi.org/10.1016/j.tafmec.2022.103717 Embargo date 2023-06-09 ISSN 0167-8442 Source Theoretical and Applied Fracture Mechanics, 123 Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2023 Haohui Xin, Jielin Liu, J.A.F.O. Correia, Filippo Berto, M. Veljkovic, Guian Qian Files PDF 1_s2.0_S0167844222004669_main.pdf 13.82 MB Close viewer /islandora/object/uuid:9fc92de9-2f32-426e-b79b-cf60b1e72790/datastream/OBJ/view