Details
| Original language | English |
|---|---|
| Article number | 106470 |
| Journal | International journal of fatigue |
| Volume | 153 |
| Publication status | Published - Dec 2021 |
| Externally published | Yes |
Abstract
In this study, the high-cycle fatigue behavior of bridge connections subjected to distortion-induced loadings (generating multiaxial stresses) and strengthened with prestressed elements were experimentally investigated. Thereafter, appropriate critical plane-based multiaxial fatigue thresholds based on the modified Wohler curve method (MWCM) and Fatemi-Socie's (FS) criteria were used to predict the initiation of cracks in the angles considering the estimated fully reversed uniaxial and shear fatigue limits as well as residual stresses. The prestressed strengthening system was effective in reducing the mean values as a result of the prestressing force, enabling a shift in the stress state to below the initiation threshold.
Keywords
- Angle connections, Crack initiation, Critical plane approach, Distortion-induced loading, Multiaxial fatigue
ASJC Scopus subject areas
- Mathematics(all)
- Modelling and Simulation
- Materials Science(all)
- General Materials Science
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
- Engineering(all)
- Industrial and Manufacturing Engineering
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In: International journal of fatigue, Vol. 153, 106470, 12.2021.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Multiaxial fatigue criteria for prestressed strengthening of steel connections
AU - Heydarinouri, Hossein
AU - Nussbaumer, Alain
AU - Motavalli, Masoud
AU - Ghafoori, Elyas
N1 - Funding Information: The authors acknowledge the Innosuisse Swiss Innovation Agency (Grant ID: 19240.1 PFIW-IW) for funding this research project. The financial and technical support from the project partners, namely S&P Clever Reinforcement Company AG, Switzerland; the Swiss Federal Railways (SBB) AG, Bern; and dsp Ingenieure + Planer AG Engineering Office, Uster, Switzerland are highly appreciated. Special thanks go to the teams of the Structural Engineering Research Laboratory of Empa (Dübendorf, Switzerland). The authors also appreciate Dr. Hans-Jakob Schindler at Mat-Tec AG, Switzerland, for his support in measuring the residual stresses. Publisher Copyright: © 2021 The Author(s)
PY - 2021/12
Y1 - 2021/12
N2 - In this study, the high-cycle fatigue behavior of bridge connections subjected to distortion-induced loadings (generating multiaxial stresses) and strengthened with prestressed elements were experimentally investigated. Thereafter, appropriate critical plane-based multiaxial fatigue thresholds based on the modified Wohler curve method (MWCM) and Fatemi-Socie's (FS) criteria were used to predict the initiation of cracks in the angles considering the estimated fully reversed uniaxial and shear fatigue limits as well as residual stresses. The prestressed strengthening system was effective in reducing the mean values as a result of the prestressing force, enabling a shift in the stress state to below the initiation threshold.
AB - In this study, the high-cycle fatigue behavior of bridge connections subjected to distortion-induced loadings (generating multiaxial stresses) and strengthened with prestressed elements were experimentally investigated. Thereafter, appropriate critical plane-based multiaxial fatigue thresholds based on the modified Wohler curve method (MWCM) and Fatemi-Socie's (FS) criteria were used to predict the initiation of cracks in the angles considering the estimated fully reversed uniaxial and shear fatigue limits as well as residual stresses. The prestressed strengthening system was effective in reducing the mean values as a result of the prestressing force, enabling a shift in the stress state to below the initiation threshold.
KW - Angle connections
KW - Crack initiation
KW - Critical plane approach
KW - Distortion-induced loading
KW - Multiaxial fatigue
UR - http://www.scopus.com/inward/record.url?scp=85112270219&partnerID=8YFLogxK
U2 - 10.1016/j.ijfatigue.2021.106470
DO - 10.1016/j.ijfatigue.2021.106470
M3 - Article
AN - SCOPUS:85112270219
VL - 153
JO - International journal of fatigue
JF - International journal of fatigue
SN - 0142-1123
M1 - 106470
ER -