Progressive Fatigue Failure Analysis of a Filament Wound Ring Specimen with a Hole

A progressive FEA mechanical fatigue degradation model for composites was developed and implemented using a UMAT user material subroutine in Abaqus. Numerical results were compared to experimental strain field data from high frequency digital image correlation (DIC) of split disk testing pressure vessel cut outs with holes. The correctly predicted the onset evolution damage matrix as well fiber failure. uses failure analysis based on maximum criterion, cycle jump method, Miner’s sum accumulation rule. parameter study properties needed capture scatter fields observed experimentally by DIC. S-N curve had be lowered 0% 60% scatter. local described curves measured DIC having 2.5 times greater than that found standard coupon testing.