Strain-based fatigue reliability assessment of welded joints in ship structures

摘要: Abstract A strain-based fatigue reliability assessment of welded ship structural joints is presented. To obtain a complete description the stress acting on butt-welded joint in ship, probabilistic distribution for low cycle range developed considering uncertainty static and dynamic stresses. model effect secondary notch embedded into primary high regimes. The misalignment, notch, residual limit effects are incorporated strain approach which based present study. efficient Advanced Mean Value method used to derive crack initiation life where detectable formed. influence different modelling options analysed, importance accounting especially proposed discussed. sensitivity estimates variables’ investigated First Order Reliability Method, dominant ones identified.