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A new alternativee method to evaluate the J-intergral in the case of elastomers

type de publication      article dans une revue internationale avec comité de lecture
date de publication 2003
auteur(s) Aït Hocine N.; Naït Abdelaziz Moussa
journal International Journal of Fracture
volume (numéro) 124 (1-2)
  
pages 79 – 92
résumé This study concerns the fracture of rubbers. The objective is to verify the validity of the J-integral expression we proposed for such materials (Aït Hocine et al., 2002). In this expression, the parameter J is represented as a multiplicative form of a geometrical η* (or η) factor and elastic work per unit area as it has been already done in the Linear Elastic Fracture Mechanics (LEFM) (Turner, 1973). The whole problem rests in the fact that the factor η* (or η) is unknown whereas in LEFM, expressions of ηel factors are available for several kinds of specimen geometry. Thus, in this work, an experimental and a numerical analysis have been achieved and we have shown, for both the studied materials and the considered specimens, that these unknown factors could be replaced by those issued from the LEFM or from the work of Kim and Joe (1989) on rubber-like materials. The results obtained confirm the validity of our model representing a single specimen method of an experimental evaluation of the elastomers fracture energy.
mots clés Finite elements, fracture,? factor, J- integral, rubber
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