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A fracture mechanics study of the fatigue of rubber in compression

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Abstract

Repeated deformation of rubber cylinders in compression causes cracks to initiate at tensile stress concentrations (eg. bond edges). The cracks grow to remove the rubber which at maximum deformation bulges outside the original profile of the cylinder. The results are analysed in terms of fracture mechanics. The tearing energy, T is substantially independent of crack length. The relation between crack growth rate dc/dN and T appears to be a material property, independent of testpiece geometry.

Résumé

Des déformations répétées de cylindres de cyoutchouc en compression occasionnent l'amorçage de fissures dans les zones où se concentrent des contraintes de traction (ex bords). En progressant, les fissures arrachent de la matière qui apparaît sécrétée par le cylindre à déformation maximum. Le résultat est analysé en termes de mécanique de rupture. L'énergie d'arrachement T est substantiellement indépendante de la longueur de fissure. Il apparaît que la relation entre la vitesse de propagation de la fissure dc/dN et T est une propriété du matériau, indépendante de la géométrie de l'éprouvette d'essai.

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Stevenson, A. A fracture mechanics study of the fatigue of rubber in compression. Int J Fract 23, 47–59 (1983). https://doi.org/10.1007/BF00020157

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  • DOI: https://doi.org/10.1007/BF00020157

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