Fatigue life prediction of topologically optimized torque link adjusted for additive manufacturing
Nema prikaza
Autori
Raičević, NikolaGrbović, Aleksandar
Kastratović, Gordana
Vidanović, Nenad
Sedmak, Aleksandar
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
The torque link is part of the nose landing gear of aircraft. It prevents the piston from turning inside the cylinder of the shock absorber, enabling its up and down motion during the landing and take-off. As such, its structural integrity and life are crucial for aircraft safe operation, but because of complex geometry and variable loading conditions, its fatigue life estimation represents a real challenge. In this paper, fatigue lives of two different designs of the torque links of the light aircraft are evaluated by a numerical approach based on the improved FEM. Firstly, the fatigue life of the damaged torque link was assessed for actual load conditions. Then, improved torque links, obtained through topological optimization, were analyzed and their fatigue life was calculated. Finally, the numerical simulations of the additive manufacturing (AM) process of optimized torque links were carried out, and the fatigue life of these torque links, including residual stresses from AM, were ...estimated too. The obtained numbers of cycles in all cases were compared and discussed for all torque links cases. This is an advanced approach to fatigue life assessment of optimized printed 3D parts based on numerical simulations of both crack growth and AM process.
Ključne reči:
Torque link / Fatigue life / Structural optimization / FE simulations / Crack growthIzvor:
International Journal of Fatigue, 2023, 176, 107907-Izdavač:
- Elsevier
Kolekcije
Institucija/grupa
Mašinski fakultetTY - JOUR AU - Raičević, Nikola AU - Grbović, Aleksandar AU - Kastratović, Gordana AU - Vidanović, Nenad AU - Sedmak, Aleksandar PY - 2023 UR - https://machinery.mas.bg.ac.rs/handle/123456789/7007 AB - The torque link is part of the nose landing gear of aircraft. It prevents the piston from turning inside the cylinder of the shock absorber, enabling its up and down motion during the landing and take-off. As such, its structural integrity and life are crucial for aircraft safe operation, but because of complex geometry and variable loading conditions, its fatigue life estimation represents a real challenge. In this paper, fatigue lives of two different designs of the torque links of the light aircraft are evaluated by a numerical approach based on the improved FEM. Firstly, the fatigue life of the damaged torque link was assessed for actual load conditions. Then, improved torque links, obtained through topological optimization, were analyzed and their fatigue life was calculated. Finally, the numerical simulations of the additive manufacturing (AM) process of optimized torque links were carried out, and the fatigue life of these torque links, including residual stresses from AM, were estimated too. The obtained numbers of cycles in all cases were compared and discussed for all torque links cases. This is an advanced approach to fatigue life assessment of optimized printed 3D parts based on numerical simulations of both crack growth and AM process. PB - Elsevier T2 - International Journal of Fatigue T1 - Fatigue life prediction of topologically optimized torque link adjusted for additive manufacturing SP - 107907 VL - 176 DO - 10.1016/j.ijfatigue.2023.107907 ER -
@article{ author = "Raičević, Nikola and Grbović, Aleksandar and Kastratović, Gordana and Vidanović, Nenad and Sedmak, Aleksandar", year = "2023", abstract = "The torque link is part of the nose landing gear of aircraft. It prevents the piston from turning inside the cylinder of the shock absorber, enabling its up and down motion during the landing and take-off. As such, its structural integrity and life are crucial for aircraft safe operation, but because of complex geometry and variable loading conditions, its fatigue life estimation represents a real challenge. In this paper, fatigue lives of two different designs of the torque links of the light aircraft are evaluated by a numerical approach based on the improved FEM. Firstly, the fatigue life of the damaged torque link was assessed for actual load conditions. Then, improved torque links, obtained through topological optimization, were analyzed and their fatigue life was calculated. Finally, the numerical simulations of the additive manufacturing (AM) process of optimized torque links were carried out, and the fatigue life of these torque links, including residual stresses from AM, were estimated too. The obtained numbers of cycles in all cases were compared and discussed for all torque links cases. This is an advanced approach to fatigue life assessment of optimized printed 3D parts based on numerical simulations of both crack growth and AM process.", publisher = "Elsevier", journal = "International Journal of Fatigue", title = "Fatigue life prediction of topologically optimized torque link adjusted for additive manufacturing", pages = "107907", volume = "176", doi = "10.1016/j.ijfatigue.2023.107907" }
Raičević, N., Grbović, A., Kastratović, G., Vidanović, N.,& Sedmak, A.. (2023). Fatigue life prediction of topologically optimized torque link adjusted for additive manufacturing. in International Journal of Fatigue Elsevier., 176, 107907. https://doi.org/10.1016/j.ijfatigue.2023.107907
Raičević N, Grbović A, Kastratović G, Vidanović N, Sedmak A. Fatigue life prediction of topologically optimized torque link adjusted for additive manufacturing. in International Journal of Fatigue. 2023;176:107907. doi:10.1016/j.ijfatigue.2023.107907 .
Raičević, Nikola, Grbović, Aleksandar, Kastratović, Gordana, Vidanović, Nenad, Sedmak, Aleksandar, "Fatigue life prediction of topologically optimized torque link adjusted for additive manufacturing" in International Journal of Fatigue, 176 (2023):107907, https://doi.org/10.1016/j.ijfatigue.2023.107907 . .