A damage model for the fatigue life of elastomeric materials

A continuum damage model is proposed to investigate the fatigue damage behavior for elastomers. The elastic strain energy of a damaged material is expressed based on the Ogden model, and the damage strain energy release rate is derived in the context of continuum damage mechanics. The damage evoluti...

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Bibliographic Details
Published in:Mechanics of materials 2002-08, Vol.34 (8), p.475-483
Main Authors: Wang, Bo, Lu, Hongbing, Kim, Gyu-ho
Format: Article
Language:English
Subjects:
Applied sciences
Continuum damage mechanics
Elastomer
Exact sciences and technology
Fatigue
Fracture mechanics (crack, fatigue, damage...)
Fracture mechanics, fatigue and cracks
Fundamental areas of phenomenology (including applications)
Hyperelasticity
Natural polymers
Natural rubber
Physicochemistry of polymers
Physics
Rubber
Solid mechanics
Structural and continuum mechanics
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Summary:A continuum damage model is proposed to investigate the fatigue damage behavior for elastomers. The elastic strain energy of a damaged material is expressed based on the Ogden model, and the damage strain energy release rate is derived in the context of continuum damage mechanics. The damage evolution equation is established to develop a formula to describe the fatigue life as a function of the nominal strain amplitude under cyclic loading. Experiments on the fatigue of a carbon-filled natural rubber were conducted to determine the relation between the fatigue life and the nominal strain amplitude. The results indicate that the theoretical formula for the fatigue life as a function of the nominal strain amplitude, derived from the proposed damage model, can describe experimental data for carbon-filled natural rubbers very well.
ISSN:0167-6636
1872-7743
DOI:10.1016/S0167-6636(02)00175-8