PSI - Issue 46

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2021) 000–000

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ScienceDirect

Procedia Structural Integrity 46 (2023) 182–188

5th International Conference on Structural Integrity and Durability, ICSID 2021 Study on fatigue and fracture behavior of Al 2024 alloy through XFEM and stress-life approach

Saurabh Gairola a, *, Raviraj Verma a and R. Jayaganthan a, * a Department of Engineering Design, Indian Institute of Technology, Madras 600036, India

© 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of ICSID 2021 Organizers Abstract Numerical analysis of fracture and fatigue behavior of Al 2024 in T3 condition was performed in this study. Fracture toughness simulation was performed on CT specimen using extended finite element method (XFEM) approach. Fatigue failure analysis was divided into two phases: crack initiation (N i ) and crack propagation phase (N p ). The crack initiation phase was predicted using stress life equation in Simulia software packages, Abaqus and Fe-Safe, whereas the crack propagation phase was determined using the fracture mechanics approach in AFGROW computational code. Finally, the simulation results on fatigue and fracture behaviour were compared with the experimental data reported in the literature. © 2021 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of ICSID 2021 Organizers. Keywords: XFEM; Stress life equation; Fatigue crack growth rate (FCGR), Fatigue life equation 1. Introduction Al 2024 is a heat treatable aluminum alloy, with copper being its primary alloying element. It finds extensive applications in the aerospace industry such as fuselage, wing structure, in the automotive industry such as truck wheels, etc., due to its high fatigue and fracture toughness and its high strength to weight ratio (Alexopoulos & Papanikos, 2008). The fundamental understanding of deformation characteristics of Al alloys using numerical simulation is growing rapidly to minimize the number of experimentation and time taken to develop materials with high structural integrity

* Corresponding author. Tel.: +91-9458179983; fax: +91-44 2257 4735. E-mail address: ed18d007@smail.iitm.ac.in, edjay@smail.iitm.ac.in

2452-3216 © 2021 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of ICSID 2021 Organizers.

2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of ICSID 2021 Organizers 10.1016/j.prostr.2023.06.031