Effect of laser beam welded reinforcement on integral skin panel fatigue life
Само за регистроване кориснике
2019
Аутори
Grbović, AleksandarSedmak, Aleksandar
Kastratović, Gordana
Petrašinović, Danilo
Vidanović, Nenad
Sghayer, Abulgasem
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
In this paper, numerical analyses of fatigue crack growth in integral skin-stringer panel produced by means of laser beam welding (LBW) are presented along with fatigue results verified by previously conducted experiments. Skin-stringer panel is fail-safe structure widely used in aircraft industry, which requires a good estimate of fatigue life after crack initiation. In the past, experimental work was the only successful method for fatigue life estimation of complex damaged structure, but nowadays researches have powerful numerical tools, such as extended finite element method (XFEM), for three-dimensional crack growth analysis. In research presented here, XFEM was initially used for crack growth simulation in simple flat plate made of aluminium 6156 T6 and 6156 T4 for the purpose of procedure verification, since fatigue life for simple plate was known from experiment. Then, XFEM was used to simulate fatigue crack growth in the panel reinforced with four stringers. Fatigue life obtain...ed on the basis of calculated stress intensity factors (SIFS) along the crack fronts on LBW skin-stringer panels was, as expected, significantly longer than experimentally measured life of simple flat plate. Finally, several numerical simulations were performed in order to analyse the influence of mesh size on accuracy of estimated fatigue life of damaged LBW skin panels. For that purpose, average element sizes of 1, 2 and 4 mm were used.
Кључне речи:
XFEM / SIFs / Integral skin-stringer structures / Fatigue life / Fatigue crack growthИзвор:
Engineering Failure Analysis, 2019, 101, 383-393Издавач:
- Pergamon-Elsevier Science Ltd, Oxford
DOI: 10.1016/j.engfailanal.2019.03.029
ISSN: 1350-6307
WoS: 000464960500029
Scopus: 2-s2.0-85063784076
Институција/група
Inovacioni centarTY - JOUR AU - Grbović, Aleksandar AU - Sedmak, Aleksandar AU - Kastratović, Gordana AU - Petrašinović, Danilo AU - Vidanović, Nenad AU - Sghayer, Abulgasem PY - 2019 UR - https://machinery.mas.bg.ac.rs/handle/123456789/3135 AB - In this paper, numerical analyses of fatigue crack growth in integral skin-stringer panel produced by means of laser beam welding (LBW) are presented along with fatigue results verified by previously conducted experiments. Skin-stringer panel is fail-safe structure widely used in aircraft industry, which requires a good estimate of fatigue life after crack initiation. In the past, experimental work was the only successful method for fatigue life estimation of complex damaged structure, but nowadays researches have powerful numerical tools, such as extended finite element method (XFEM), for three-dimensional crack growth analysis. In research presented here, XFEM was initially used for crack growth simulation in simple flat plate made of aluminium 6156 T6 and 6156 T4 for the purpose of procedure verification, since fatigue life for simple plate was known from experiment. Then, XFEM was used to simulate fatigue crack growth in the panel reinforced with four stringers. Fatigue life obtained on the basis of calculated stress intensity factors (SIFS) along the crack fronts on LBW skin-stringer panels was, as expected, significantly longer than experimentally measured life of simple flat plate. Finally, several numerical simulations were performed in order to analyse the influence of mesh size on accuracy of estimated fatigue life of damaged LBW skin panels. For that purpose, average element sizes of 1, 2 and 4 mm were used. PB - Pergamon-Elsevier Science Ltd, Oxford T2 - Engineering Failure Analysis T1 - Effect of laser beam welded reinforcement on integral skin panel fatigue life EP - 393 SP - 383 VL - 101 DO - 10.1016/j.engfailanal.2019.03.029 ER -
@article{ author = "Grbović, Aleksandar and Sedmak, Aleksandar and Kastratović, Gordana and Petrašinović, Danilo and Vidanović, Nenad and Sghayer, Abulgasem", year = "2019", abstract = "In this paper, numerical analyses of fatigue crack growth in integral skin-stringer panel produced by means of laser beam welding (LBW) are presented along with fatigue results verified by previously conducted experiments. Skin-stringer panel is fail-safe structure widely used in aircraft industry, which requires a good estimate of fatigue life after crack initiation. In the past, experimental work was the only successful method for fatigue life estimation of complex damaged structure, but nowadays researches have powerful numerical tools, such as extended finite element method (XFEM), for three-dimensional crack growth analysis. In research presented here, XFEM was initially used for crack growth simulation in simple flat plate made of aluminium 6156 T6 and 6156 T4 for the purpose of procedure verification, since fatigue life for simple plate was known from experiment. Then, XFEM was used to simulate fatigue crack growth in the panel reinforced with four stringers. Fatigue life obtained on the basis of calculated stress intensity factors (SIFS) along the crack fronts on LBW skin-stringer panels was, as expected, significantly longer than experimentally measured life of simple flat plate. Finally, several numerical simulations were performed in order to analyse the influence of mesh size on accuracy of estimated fatigue life of damaged LBW skin panels. For that purpose, average element sizes of 1, 2 and 4 mm were used.", publisher = "Pergamon-Elsevier Science Ltd, Oxford", journal = "Engineering Failure Analysis", title = "Effect of laser beam welded reinforcement on integral skin panel fatigue life", pages = "393-383", volume = "101", doi = "10.1016/j.engfailanal.2019.03.029" }
Grbović, A., Sedmak, A., Kastratović, G., Petrašinović, D., Vidanović, N.,& Sghayer, A.. (2019). Effect of laser beam welded reinforcement on integral skin panel fatigue life. in Engineering Failure Analysis Pergamon-Elsevier Science Ltd, Oxford., 101, 383-393. https://doi.org/10.1016/j.engfailanal.2019.03.029
Grbović A, Sedmak A, Kastratović G, Petrašinović D, Vidanović N, Sghayer A. Effect of laser beam welded reinforcement on integral skin panel fatigue life. in Engineering Failure Analysis. 2019;101:383-393. doi:10.1016/j.engfailanal.2019.03.029 .
Grbović, Aleksandar, Sedmak, Aleksandar, Kastratović, Gordana, Petrašinović, Danilo, Vidanović, Nenad, Sghayer, Abulgasem, "Effect of laser beam welded reinforcement on integral skin panel fatigue life" in Engineering Failure Analysis, 101 (2019):383-393, https://doi.org/10.1016/j.engfailanal.2019.03.029 . .