GB
G. Bufalari
Authored
2 records found
Mode-III fatigue of welded joints in steel maritime structures
Weld notch shear stress distributions and effective notch stress based resistance
The predominant mode-I response of maritime structures can be multiaxial, involving out-of-plane mode-III shear components. Semi-analytical mode-III notch stress distribution formulations have been established for critical details like welded T-joints and cruciform joints, reflec
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Mode-{I, III} multiaxial fatigue of welded joints in steel maritime structures
Effective notch stress based resistance incorporating strength and mechanism contributions
The response of maritime structures can be multiaxial, involving predominant mode-I and non-negligible mode-III components. Adopting a stress distribution formulation based effective notch stress as fatigue strength parameter for mixed mode-{I, III} multiaxial fatigue assessment
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Contributed
6 records found
Fatigue analysis and design of arc-welded and laser-welded lap joints
Toe vs. root induced failure
Fatigue might be the governing limit state in marine structures mainly induced by the waves and wind. Therefore, using a lap joint for the shell plating to replicate the appearance of a riveted joint for a retro yacht is critical due to the limited fatigue resistance. For this j
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Fatigue damage accumulation in steel welded joints, subject to (random) variable amplitude loading conditions
An improved fatigue-life model for naval ship structural design
The current fatigue assessment methods for naval ships are intentionally conservative. This is in part due to uncertainties in the fatigue capacity (i.e. fatigue resistance) of the ship: the nominal and hot spot structural stress incorporate implicit conservatism due to the inher
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Confused sea-state induced fatigue
Joint swell and wind seas induced multiaxial stresses: the influence of confused sea-state induced multiaxial stress-states on fatigue damage of a USCG cutter.
Marine structures are mostly exposed to mild and moderate sea-states, where the structural response is elastic. Characteristics of environmental loading are highly stochastic in nature, resulting in stress-states that might be multiaxial. This thesis attempts to identify the sour
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Mean Stress Effects in Temporal and Spectral Fatigue Analysis
Loading & Response and Resistance Contributions
Fatigue lifetime has proven to be a leading design parameter for naval vessels. In the field of fatigue analysis and design of welded joints, two overall methods are distinguished: the temporal and spectral approach. Using empirical models, the spectral approach is typically pref
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Fatigue is typically a governing limit state for maritime structures, and weld joints are the most critical locations. Various fatigue damage criteria have been developed involving either an intact or cracked geometry parameter, incorporating local or global information. In this
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Fatigue strength is typically a governing limit state for marine structures. Predicting an accurate fatigue lifetime is important for structures (e.g. wind turbines) that are supposed to be out at sea for decades. It is valuable for all type of structures that encounter stochasti
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