[en] Fracture stress triaxiality affects the maximum deformation of materials, and reliable computational design of damage-tolerant aircraft depends on accurate predictions of this state variable. This numerical study analyses the effect of fracture stress triaxiality on the damage behavior of Ti-6Al-4V during aero-engine fan blade-out events using explicit dynamic finite element analysis. Experimental data used in previously reported model calibration are compared with analytical predictions of the Johnson-Cook damage model and with preliminary simulation results of stress-triaxiality at fracture in the shroud due to a fan blade-out. This analysis is necessary to ensure that the structural integrity assessment with the identified model is consistent with the stress-triaxiality range observed in the real case of damaged engine shroud. The main result emphasizes the importance of adequate experimental calibration for accurate modelling of structural assessment of aeroengines.
Disciplines :
Mechanical engineering
Author, co-author :
Tuninetti, Victor ; Université de Liège - ULiège > Département ArGEnCo ; Department of Mechanical Engineering, Universidad de La Frontera, Temuco, Chile
Beecher, Carlos; Master Program in Engineering Sciences, Faculty of Engineering, Universidad de La Frontera, Temuco, Chile
Sepulveda, Hector ; Université de Liège - ULiège > Urban and Environmental Engineering ; Master Program in Engineering Sciences, Faculty of Engineering, Universidad de La Frontera, Temuco, Chile
Duchene, Laurent ; Université de Liège - ULiège > Département ArGEnCo > Analyse multi-échelles dans le domaine des matériaux et structures du génie civil
Oñate, Angelo; Department of Materials Engineering (DIMAT), Faculty of Engineering, Universidad de Concepción, Concepción, Chile
Pincheira, Gonzalo; Department of Industrial Technologies, Faculty of Engineering, University of Talca, Curicó, Chile
Language :
English
Title :
Fracture stress triaxiality of Ti-6Al-4V for computational design of damage tolerant aeroengines
Aveson, J. W., Reinhart, G., Billia, B., Nguyen-Thi, H., Mangelinck-Noël, N., Lafford, T. A., Vie, C. A., Baruchel, J., Stone, H. J., 2012. Observation of the initiation and propagation of solidification cracks by means of in situ synchrotron X-ray radiography. IOP Conference Series: Materials Science and Engineering 33(1), 012040. https://doi.org/10.1088/1757-899X/33/1/012040.
Cantwell, W. J., Morton, J., 1991. The impact resistance of composite materials - a review. Composites 22(5), 347-362. https://doi.org/10.1016/0010-4361(91)90549-V.
FAA, 2016. Title 14-Aeronautics and Space Chapter I-Federal Aviation Administration, Department of Transportation Subchapter C-Aircraft.
Feng, R., Chen, M., Xie, L., 2024. Constitutive relationship and fracture mechanism for wide stress triaxiality of titanium alloy. Engineering Fracture Mechanics 295, 1090804. https://doi.org/10.1016/j.engfracmech.2023.109804.
Godard, A., Bario, F., Burguburu, S., Lebœuf, F., 2012. Experimental and Numerical Study of a Subsonic Aspirated Cascade. Volume 8: Turbomachinery, Parts A, B, and C, 253-267. https://doi.org/10.1115/GT2012-69011.
Guo, Y., Sun, Y., Li, L., 2020. Research on probabilistic risk assessment of aeroengine rotor failure. Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 234(16), 2337-2347. https://doi.org/10.1177/0954410020926662.
Hassanzadeh, S., Hasani, H., Zarrebini, M., 2018. Mechanical characterization of innovative 3D multi-cell thermoset composites produced with weft-knitted spacer fabrics. Composite Structures 184, 935-949. https://doi.org/10.1016/j.compstruct.2017.10.048.
Skripnyak, V. V., Skripnyak, E. G., Skripnyak, V. A., 2020. Fracture of titanium alloys at high strain rates and under stress triaxiality. Metals 10(3), 305. https://doi.org/10.3390/met10030305.
Tuninetti, V., Forcael, D., Valenzuela, M., Martínez, A., Ávila, A., Medina, C., Pincheira, G., Salas, A., Oñate, A., Duchêne, L., 2024a. Assessing Feed-Forward Backpropagation Artificial Neural Networks for Strain-Rate-Sensitive Mechanical Modeling. Materials 17(2), 317. https://doi.org/10.3390/ma17020317.
Tuninetti, V., Sepúlveda, H., 2024. Computational Mechanics for Turbofan Engine Blade Containment Testing: Fan Case Design and Blade Impact Dynamics by Finite Element Simulations. Aerospace 11(5), 333. https://doi.org/10.3390/aerospace11050333.
Tuninetti, V., Sepúlveda, H., Beecher, C., Rojas-Ulloa, C., Oñate, A., Medina, C., Valenzuela, M., 2024b. A Combined Experimental and Numerical Calibration Approach for Modeling the Performance of Aerospace-Grade Titanium Alloy Products. Aerospace 11(4), 285. https://doi.org/10.3390/aerospace11040285.
Zhang, H., Hu, D., Ye, X., Chen, X., He, Y., 2022. A simplified Johnson-Cook model of TC4T for aeroengine foreign object damage prediction. Engineering Fracture Mechanics 269, 108523. https://doi.org/10.1016/j.engfracmech.2022.108523.
Zhang, H., Li, X., Gao, T., Song, H., Huang, G., 2021. Experimental study on deformation evolution and fracture behaviors of pure titanium at different stress triaxialities. Engineering Fracture Mechanics 258, 108127. https://doi.org/10.1016/j.engfracmech.2021.108127.
