Modelling of Progressive Damage in a Notched Carbon/Epoxy Composite Laminate Subjected to Tensile Loading Using Different Assessment Methods Coupled with FEM

다국어 초록 (Multilingual Abstract)

Modelling of progressive damage in a notched carbon/epoxy composite laminate subjected to tensile loading usingdifferent assessment methods coupled with FEM. In this study, various evaluation methods for the initial and progressivefailure of composite laminated have been proposed and assessed based on several failure criteria (Puck and Hashin) andcoupled with damage mechanics (gradual degradation methods and continuum damage mechanic), respectively. This workaims to model the behaviour and the damage phenomenon in T300/1034C carbon/epoxy composite laminates under tensileloading while considering the effect of different stacking sequences and stress concentration. Hence, a user-definedsubroutine Material (UMAT) has been successfully implemented, using finite element software Abaqus, through couplingPuck’s failure criteria and gradual degradation methods (Constant stress exposure and Element weakening method) to enableaccessible use of failure analysis. However, the analysis results comprise the prediction of the failure load, failure modes andload vs displacement curves which were compared to the experimental/numerical findings already provided in the literatureas well as the study of the mesh dependency for the applied methods. This comparative study confirmed that the PUCK+CSEmodel has the potential not only to give a thorough understanding of progressive failure mechanisms in fibre-reinforcedcomposites, but can also be used to design composite laminates involving holes and notches, where the simulation results arewithin the confidence interval.

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