Fatigue Crack Growth Under Variable Amplitude Loading Through XFEM

Date

2016-06-24

Author

Dirik, Haydar
Yalçınkaya, Tuncay

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Predicting fatigue crack growth (FCG) rate and path under variable amplitude loading (VAL) is a crucial issue in damage tolerant design commonly used in aerospace industry. The aim of the current study is to predict FCG life under VAL through Extended Finite Element Method (XFEM) and to explicitly illustrate both FCG life and crack propagation. For this purpose an algorithm is developed and integrated in ABAQUS software to analyze 3D crack propagation under VAL using Modified Generalized Willenborg (MGW) retardation model. The results are compared with NASGRO crack propagation software and experimental FCG test data on 7075-T6 aluminum alloy under various over load (OL) and over load-under load (OL-UL) conditions which exhibit a good agreement.

Subject Keywords

Fatigue crack growth, Variable amplitude loading, XFEM

URI

https://hdl.handle.net/11511/40026

DOI

https://doi.org/10.1016/j.prostr.2016.06.384

Conference Name

21st European Conference on Fracture (ECF)

Collections

Department of Aerospace Engineering, Conference / Seminar

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Citation Formats

H. Dirik and T. Yalçınkaya, “Fatigue Crack Growth Under Variable Amplitude Loading Through XFEM,” Catania, ITALY, 2016, vol. 2, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/40026.