Influence of semi-circular cracks on threaded connection fatigue by means of Kitagawa-Takahashi diagram and El Haddad equation
Само за регистроване кориснике
2016
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Evaluation of semi-circular surface crack influence on threaded connection fatigue behavior, made of 42CrMo4 heat treatable steel, was carried out. Crack diameters were defined as 0.02, 0.05, 0.1, and 0.15 mm. Influence of semi-circular surface cracks was investigated by means of Kitagawa-Takahashi diagram and El Haddad equation. Assessments were done for survival probability of 99% on detailed FE model with normal metric thread profile and preload force at 70% of force at bolt yield point. The most critical location on threaded connections usually are thread roots which contain a very high notch effect. In order to accurately consider multiaxial stress field in thread root, multiaxial fatigue stress criterion based on a critical plane theory for fatigue assessment, was used. Mean stress influence was taken into account by means of Haigh diagram. Variable amplitude loading history of low-high (Lo-Hi) sequence spectrum was analyzed with the numerical algorithm of Rainflow cycle counting... in the time domain. Fatigue damage was calculated according to the modified Palmgren-Miner linear damage accumulation hypothesis.
Кључне речи:
Threaded connection fatigue / Thread root fatigue / Kitagawa-Takahashi diagram / El Haddad equation / Crack in thread rootИзвор:
Key Engineering Materials, 2016, 665, 133-136Издавач:
- Trans Tech Publications Ltd
DOI: 10.4028/www.scientific.net/KEM.665.133
ISSN: 1013-9826
Scopus: 2-s2.0-84952837286
Институција/група
Inovacioni centarTY - CONF AU - Novoselac, S. AU - Ergić, Todor AU - Kozak, Dražan AU - Sedmak, Aleksandar PY - 2016 UR - https://machinery.mas.bg.ac.rs/handle/123456789/2375 AB - Evaluation of semi-circular surface crack influence on threaded connection fatigue behavior, made of 42CrMo4 heat treatable steel, was carried out. Crack diameters were defined as 0.02, 0.05, 0.1, and 0.15 mm. Influence of semi-circular surface cracks was investigated by means of Kitagawa-Takahashi diagram and El Haddad equation. Assessments were done for survival probability of 99% on detailed FE model with normal metric thread profile and preload force at 70% of force at bolt yield point. The most critical location on threaded connections usually are thread roots which contain a very high notch effect. In order to accurately consider multiaxial stress field in thread root, multiaxial fatigue stress criterion based on a critical plane theory for fatigue assessment, was used. Mean stress influence was taken into account by means of Haigh diagram. Variable amplitude loading history of low-high (Lo-Hi) sequence spectrum was analyzed with the numerical algorithm of Rainflow cycle counting in the time domain. Fatigue damage was calculated according to the modified Palmgren-Miner linear damage accumulation hypothesis. PB - Trans Tech Publications Ltd C3 - Key Engineering Materials T1 - Influence of semi-circular cracks on threaded connection fatigue by means of Kitagawa-Takahashi diagram and El Haddad equation EP - 136 SP - 133 VL - 665 DO - 10.4028/www.scientific.net/KEM.665.133 ER -
@conference{ author = "Novoselac, S. and Ergić, Todor and Kozak, Dražan and Sedmak, Aleksandar", year = "2016", abstract = "Evaluation of semi-circular surface crack influence on threaded connection fatigue behavior, made of 42CrMo4 heat treatable steel, was carried out. Crack diameters were defined as 0.02, 0.05, 0.1, and 0.15 mm. Influence of semi-circular surface cracks was investigated by means of Kitagawa-Takahashi diagram and El Haddad equation. Assessments were done for survival probability of 99% on detailed FE model with normal metric thread profile and preload force at 70% of force at bolt yield point. The most critical location on threaded connections usually are thread roots which contain a very high notch effect. In order to accurately consider multiaxial stress field in thread root, multiaxial fatigue stress criterion based on a critical plane theory for fatigue assessment, was used. Mean stress influence was taken into account by means of Haigh diagram. Variable amplitude loading history of low-high (Lo-Hi) sequence spectrum was analyzed with the numerical algorithm of Rainflow cycle counting in the time domain. Fatigue damage was calculated according to the modified Palmgren-Miner linear damage accumulation hypothesis.", publisher = "Trans Tech Publications Ltd", journal = "Key Engineering Materials", title = "Influence of semi-circular cracks on threaded connection fatigue by means of Kitagawa-Takahashi diagram and El Haddad equation", pages = "136-133", volume = "665", doi = "10.4028/www.scientific.net/KEM.665.133" }
Novoselac, S., Ergić, T., Kozak, D.,& Sedmak, A.. (2016). Influence of semi-circular cracks on threaded connection fatigue by means of Kitagawa-Takahashi diagram and El Haddad equation. in Key Engineering Materials Trans Tech Publications Ltd., 665, 133-136. https://doi.org/10.4028/www.scientific.net/KEM.665.133
Novoselac S, Ergić T, Kozak D, Sedmak A. Influence of semi-circular cracks on threaded connection fatigue by means of Kitagawa-Takahashi diagram and El Haddad equation. in Key Engineering Materials. 2016;665:133-136. doi:10.4028/www.scientific.net/KEM.665.133 .
Novoselac, S., Ergić, Todor, Kozak, Dražan, Sedmak, Aleksandar, "Influence of semi-circular cracks on threaded connection fatigue by means of Kitagawa-Takahashi diagram and El Haddad equation" in Key Engineering Materials, 665 (2016):133-136, https://doi.org/10.4028/www.scientific.net/KEM.665.133 . .