Simulation Study on Pitting Corrosion Fatigue of Cable Wires Based on Cellular Automata
By utilizing the corrosion mechanism of steel wires and the principles of cellular automata,a corresponding algorithm program was developed.A finite element model of the steel wire,including irregular pitting corrosion,was es-tablished to simulate the formation process of pitting corrosion.Subsequently,an overall finite element model of a hanger arch bridge was utilized to perform dynamic response analysis under vehicular load spectra.Fatigue life prediction was conducted based on Miner's cumulative damage principle.The results indicate that the cellular automata technique can ef-fectively simulate the pitting morphology characteristics during the corrosion process of steel wires,accurately reflecting the actual corrosion conditions.With the increase in corrosion severity,stress concentration intensifies,significantly reduc-ing the fatigue life and causing it to plummet.
high-strength steel wirescellular automatacorrosion fatiguedamage evolutionfatigue life
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