An efficient time domain fatigue analysis and its comparison to spectral fatigue assessment for an offshore jacket structure

Mohammadi, Said Fawad; Galgoul, Nelson Szilard; Starossek, Uwe; Videiro, Paulo Maurício

doi:10.1016/j.marstruc.2016.05.003

Cited by 32 publications

(11 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The adopted initiation and growth contributions have been incorporated adopting respectively a critical plane criterion and the crack tip stress intensity factor. Lifetime estimates are in good agreement with experimental results (Socie et al, 1979, Chakherlou et al, 2012, Mohammadi et al, 2016b.…”

Section: 5supporting

confidence: 83%

See 1 more Smart Citation

Report of Committee III.2: Fatigue and fracture

2015

Ships and Offshore Structures XIX

View full text Add to dashboard Cite

show abstract

Section: 5supporting

confidence: 83%

“…Opting for time domain calculations, the damage surface in the scatter diagram has been approximated meaning only a few sea states have to be simulated. The computational efforts are significantly reduced while maintaining high accuracy (Mohammadi et al, 2016b).…”

Section: Time and Frequency Domainmentioning

confidence: 99%

Report of Committee III.2: Fatigue and fracture

2015

Ships and Offshore Structures XIX

View full text Add to dashboard Cite

show abstract

“…Such programmes are considered conservative and expensive, and ways to improve their efficiency are being researched (Aeran, Siriwardane, Mikkelsen andLangen 2017, Mohammadi, Galgoul, Starossek andVideiro 2016). Fatigue analysis of an in-service, complex structure is very often a balance between practical considerations including the availability of data, time and resource limitations, and the required accuracy.…”

Section: Feedback To Platform Managementmentioning

confidence: 99%

Through-life hybrid fatigue assessment of naval ships

Magoga

Aksu

Cannon

et al. 2019

Ships and Offshore Structures

View full text Add to dashboard Cite

When a ship enters service it has an implied or calculated design fatigue life. Factors including construction quality, loads, material performance, and operational profile are assumed. However, these factors vary through life. Failure of structural items due to fatigue cracking can lead to increased cost of ownership and reduced capability. Therefore, to allow informed decision-making regarding fleet availability and economy, it is necessary to monitor the variables that influence a ship's fatigue life. This paper presents a new method whereby in-service data, fleet maintenance reports, and Finite Element Analysis are incorporated to predict ongoing fatigue life and hence support the management of the remaining service life of a ship. The method is applied to a naval High Speed Light Craft to demonstrate its merit. The fatigue lives of different welded details are predicted using a practical implementation of the S-N curve approach, employed with strain and operational data acquired from an on-board hull monitoring system. The proposed method is efficient because it is properly linked to stress analysis, inherently includes the influence of the operational profile, and is a balance between accuracy and effort.

show abstract

“…e fatigue damage of structural components under environmental loading is a cumulative process. Fatigue life prediction and reliability evaluation is still a challenging problem despite significant progress made in the past decades [20][21][22][23][24][25]. Sun and Jahangiri [26] studied the fatigue damage mitigation of offshore wind turbines under real wind and wave loads.…”

Section: Introductionmentioning

confidence: 99%

Fatigue Damage Evaluation of Pile‐Supported Bridges under Stochastic Ice Loads

Qiu

2020

Advances in Civil Engineering

View full text Add to dashboard Cite

e Bohai Sea is the sea area with the worst ice condition in China, and the ice loads significantly threaten the safety of structures in the sea. e intense vibrations of the pile-supported bridge under stochastic ice loads will increase the fatigue damage of a bridge structure and reduce the fatigue life of a bridge structure. In the present study, a comprehensive analysis model is presented to study fatigue damage for pile-supported bridges under ice loads in Bohai Sea. On the basis of measured statistical data of ice parameters and stochastic ice loads spectrum of Bohai Sea, the time histories of the stochastic ice loads of Bohai Sea are simulated. Fatigue damage analysis is carried out in time domain utilizing the finite element method considering soil and bridge structure interaction. e effect of soil conditions and water depth on the cumulative fatigue damage of the pile-supported bridges is studied. Numerical results indicate that in comparison with stiff soil conditions, pile-supported bridges in soft oil conditions can increase the cumulative fatigue damage substantially; pile-supported bridges in deep water also can increase the cumulative fatigue damage obviously. e study presented the first danger position of cumulative damage of the pile cross section under stochastic ice loads. e findings of this study can be used to fatigue damage evaluation and bridge construction in the ice-covered sea area.

show abstract

An efficient time domain fatigue analysis and its comparison to spectral fatigue assessment for an offshore jacket structure

Cited by 32 publications

References 5 publications

Report of Committee III.2: Fatigue and fracture

Report of Committee III.2: Fatigue and fracture

Through-life hybrid fatigue assessment of naval ships

Fatigue Damage Evaluation of Pile‐Supported Bridges under Stochastic Ice Loads

Contact Info

Product

Resources

About