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Damage based model to study the effect of notch introduction technique on the J-integral value of PolyOxyMethylene
Abstract : Experimental data on a CT specimen made of PolyOxyMethylene were enriched by in situ laminographic observations in 3D. The observed micro-mechanisms of crack initiation and growth have been simulated by using a damage based model. A critical value of J -integral was determined. The same model was utilized to simulate an initially heterogeneous porosity in the CT specimen to mimic the state of the material after a cutting process. A notch tip touching tool led to a less compliant specimen and a higher value of critical JcrJcr whereas non touching conditions, induced a damaged layer around the notch tip leading to a decrease in JcrJcr.
https://hal-mines-paristech.archives-ouvertes.fr/hal-01272301
Contributeur : Bibliothèque Umr7633 <>
Soumis le : mercredi 10 février 2016 - 15:25:28
Dernière modification le : jeudi 24 septembre 2020 - 18:30:07
Contributeur : Bibliothèque Umr7633 <>
Soumis le : mercredi 10 février 2016 - 15:25:28
Dernière modification le : jeudi 24 septembre 2020 - 18:30:07