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Numerical Simulation of Low Cycle Fatigue Behavior of Ti2AlNb Alloy Subcomponents

Yanju Wang1, Zhenyu Zhu2, Aixue Sha1, Wenfeng Hao3,*

1 Materials Evaluation Center for Aeronautical and Aeroengine Application, AECC Beijing Institute of Aeronautical Materials, Beijing, 100095, China
2 Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang, 212013, China
3 College of Mechanical Engineering, Yangzhou University, Yangzhou, 225127, China

* Corresponding Author: Wenfeng Hao. Email: email

(This article belongs to this Special Issue: Mechanical Reliability of Advanced Materials and Structures for Harsh Applications)

Computer Modeling in Engineering & Sciences 2023, 136(3), 2655-2676. https://doi.org/10.32604/cmes.2023.025749

Abstract

Many titanium alloy subcomponents are subjected to fatigue loading in aerospace engineering, resulting in fatigue failure. The fatigue behavior of Ti2AlNb alloy subcomponents was investigated based on the Seeger fatigue life theory and the improved Lemaitre damage evolution theory. Firstly, the finite element models of the standard openhole specimen and Y-section subcomponents have been established by ABAQUS. The damage model parameters were determined by fatigue tests, and the reliability of fatigue life simulation results of the Ti2AlNb alloy standard open-hole specimen was verified. Meanwhile, the fatigue life of Ti2AlNb alloy Y-section subcomponents was predicted. Under the same initial conditions, the average error of fatigue life predicted by two different models was 20.6%. Finally, the effects of loading amplitude, temperature, and Y-interface angle on fatigue properties of Ti2AlNb Y-section subcomponents were investigated. These results provide a new idea for evaluating the fatigue life of various Ti2AlNb alloy subcomponents.

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Cite This Article

Wang, Y., Zhu, Z., Sha, A., Hao, W. (2023). Numerical Simulation of Low Cycle Fatigue Behavior of Ti2AlNb Alloy Subcomponents. CMES-Computer Modeling in Engineering & Sciences, 136(3), 2655–2676.



cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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