Fatigue Analysis of Combined Stress Systems

1977 ◽  
pp. 26-45
Author(s):  
Terance V. Duggan ◽  
James Byrne
Keyword(s):  
Fatigue Analysis ◽  
Combined Stress

scholarly journals Discussion on Coupling Effect in Structural Load of FOWT for Condensing Wind and Wave Bins for Spectral Fatigue Analysis

2020 ◽  
Vol 8 (11) ◽  
pp. 937
Author(s):  
Tomoya Inoue ◽  
Ahmad Adilah ◽  
Kazuhiro Iijima ◽  
Sho Oh ◽  
Hideyuki Suzuki
Keyword(s):  
Coupling Effect ◽  
Fatigue Analysis ◽  
Offshore Wind ◽  
Structural Vibration ◽  
Wave Loads ◽  
Frequency Range ◽  
Combined Stress ◽  
Coupling Effects ◽  
Structural Fatigue ◽  
Floating Offshore Wind Turbines

Floating Offshore Wind Turbines (FOWTs) are subject to combined wind and wave loads. The response is not given as a simple sum of the wind-only response and wave-only response due to nonlinear coupling effects, which makes the structural analysis more complex and time-consuming. When a spectral approach for the structural fatigue analysis is considered, it is necessary to accurately estimate the variance of the combined stress taking account of the coupling effect. In this study, firstly the characteristics of the combined response are investigated. It is found out the coupling effects are two-fold; one is the aerodynamic exciting load increase for the forced motion in the wave frequency range. The other is the aerodynamic damping effect due to the increase of the relative wind speed, which is prominent in the structural vibration frequency range. Mathematical models to account for these coupling effects are developed. Then, a series of simulations are performed on three types of FOWTs to validate the models. It is shown that the characteristics of the combined response are different among the three types of the platforms and the developed model can explain the increase/decrease of the variance of the combined stress when compared with two decoupled wave-only and wind-only simulations.

Multiaxial fatigue analysis of orthotropic materials

2010 ◽  
Vol 107 (9) ◽  
pp. 369-375 ◽  
Author(s):  
C. Gaier ◽  
B. Unger ◽  
H. Dannbauer
Keyword(s):  
Fatigue Analysis ◽  
Multiaxial Fatigue ◽  
Orthotropic Materials

Powder metal forged and C-70 Steel forged. Fatigue analysis of connecting rod

2011 ◽  
Vol 3 (1) ◽  
pp. 152-160
Author(s):  
A. Souf A. Souf ◽  
◽  
K. Talea K. Talea ◽  
A. Bakali A. Bakali ◽  
M. Talea M. Talea ◽  
...  
Keyword(s):  
Fatigue Analysis ◽  
Powder Metal ◽  
Connecting Rod

Fatigue Analysis of Syme’s Prosthesis

2018 ◽  
Vol 12 (3) ◽  
pp. 293
Author(s):  
Ahmed Khaleel Abdulameer ◽  
Mohsin Abdullah Al-Shammari
Keyword(s):  
Fatigue Analysis

Modeling and fatigue analysis of an hybrid riser system submitted to vortex-induced motion

2019 ◽  
Author(s):  
Leandro Gonçalves ◽  
Bruno Cesar Cayres ◽  
Julien Mauprivez
Keyword(s):  
Fatigue Analysis ◽  
Induced Motion

Frequency-Domain Fatigue Analysis by Strain-Life Approach with Mean Stress Correction

2019 ◽  
Author(s):  
Renner Egalon Pereira ◽  
Pedro Henrique Alves Correa ◽  
Jorge Alberto Rodriguez Duran
Keyword(s):  
Frequency Domain ◽  
Fatigue Analysis ◽  
Mean Stress

Development of Fully Stochastic Fatigue Analysis Program for Offshore Floaters

2007 ◽  
Vol 44 (4) ◽  
pp. 425-438 ◽  
Author(s):  
Joon-Mo Choung ◽  
Jang-Hyun Joung ◽  
Myung-Hun Choo ◽  
Ki-Young Yoon
Keyword(s):  
Fatigue Analysis ◽  
Analysis Program

Fatigue Analysis of Welded Tubular Joints

1984 ◽  
Vol 16 (4) ◽  
pp. 127 ◽  
Author(s):  
V. M. Radhakrishnan
Keyword(s):  
Fatigue Analysis ◽  
Tubular Joints
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