Fatigue Life Prediction Probability Based On Inverse Reliability Method Of Marine Structure

Structure strength will be significantly reduced, and even cause damage, do a lotof the economic loss and adverse impact. So the work on fatigue life of structureprobability prediction is of high value for study and engineering practical value.An efficient and accurate for offshore structure reliability and life expectancyassessment is the ocean engineering in a difficult and challenging important researchfields, this paper analyzes the structure inverse reliability method is in thepredetermined reliability level, to limit state function for the stochastic analysis, get tothe design parameters for meet given target reliability index. The biggest advantagesof this method, the design parameters obtained takes into account both the uncertaintyfactors, and satisfy the set reliability level.Through an inverse reliability method (IFORM) and direct Monte Carlosimulation simulation method (Monte Carlo) structure of Marine engineering examplenumerical calculation comparison, then use all kinds of material experiment data toverify this model, through the analysis and comparison, various methods validationadvantages, shortcomings, have to work out fatigue life of structure prediction isaccurate and efficient probability, the method of the structure of the work for thefatigue life of the probability prediction to provide the reference.