Damage based model to study the effect of notch introduction technique on the J-integral value of PolyOxyMethylene - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Engineering Fracture Mechanics Année : 2015

Damage based model to study the effect of notch introduction technique on the J-integral value of PolyOxyMethylene

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Résumé

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.
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Dates et versions

hal-01272301 , version 1 (10-02-2016)

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Lucien Laiarinandrasana, Jonathan Ricard, Fabrice Guigné, Yin Cheng, Thilo F. Morgeneyer, et al.. Damage based model to study the effect of notch introduction technique on the J-integral value of PolyOxyMethylene. Engineering Fracture Mechanics, 2015, 149, pp.214-229. ⟨10.1016/j.engfracmech.2015.08.031⟩. ⟨hal-01272301⟩
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