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Open AccessArticle

A New Multiparameter Model for Multiaxial Fatigue Life Prediction of Rubber Materials

1
Department of Mechanical Engineering, University of Zaragoza, C/María de Luna, 3, 50018 Zaragoza, Spain
2
i+aitiip, Department of Mechanical Engineering, University of Zaragoza, C/María de Luna, 3, 50018 Zaragoza, Spain
3
i3A, Department of Mechanical Engineering, University of Zaragoza, C/María de Luna, 3, 50018 Zaragoza, Spain
*
Author to whom correspondence should be addressed.
Polymers 2020, 12(5), 1194; https://doi.org/10.3390/polym12051194
Received: 13 April 2020 / Revised: 20 May 2020 / Accepted: 21 May 2020 / Published: 23 May 2020
Most of the mechanical components manufactured in rubber materials experience fluctuating loads, which cause material fatigue, significantly reducing their life. Different models have been used to approach this problem. However, most of them just provide life prediction only valid for each of the specific studied material and type of specimen used for the experimental testing. This work focuses on the development of a new generalized model of multiaxial fatigue for rubber materials, introducing a multiparameter variable to improve fatigue life prediction by considering simultaneously relevant information concerning stresses, strains, and strain energies. The model is verified through its correlation with several published fatigue tests for different rubber materials. The proposed model has been compared with more than 20 different parameters used in the specialized literature, calculating the value of the R2 coefficient by comparing the predicted values of every model, with the experimental ones. The obtained results show a significant improvement in the fatigue life prediction. The proposed model does not aim to be a universal and definitive approach for elastomer fatigue, but it provides a reliable general tool that can be used for processing data obtained from experimental tests carried out under different conditions. View Full-Text
Keywords: life prediction; elastomers; rubber materials; multiaxial fatigue; damage parameter life prediction; elastomers; rubber materials; multiaxial fatigue; damage parameter
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MDPI and ACS Style

Tobajas, R.; Elduque, D.; Ibarz, E.; Javierre, C.; Gracia, L. A New Multiparameter Model for Multiaxial Fatigue Life Prediction of Rubber Materials. Polymers 2020, 12, 1194.

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