Journal
MATERIALS
Volume 16, Issue 19, Pages -Publisher
MDPI
DOI: 10.3390/ma16196561
Keywords
natural rubber; Yeoh constitutive model; hyper-elastic; carbon black filling
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This study investigated the effect of different carbon black fillings on the hyper-elastic mechanical behavior of natural rubber. The results showed that increasing the amount of carbon black filling resulted in harder rubber. A correlation between the carbon black filling volume and the parameters of the Yeoh constitutive model was explored. A method for calculating the material parameters of the Yeoh constitutive model was developed, predicting the correlation between the hyper-elastic properties of rubber and the volume fraction of the carbon black filling.
We have particularly investigated the correlation law of the effect of different carbon black fillings on the hyper-elastic mechanical behavior of natural rubber by conducting uniaxial tensile tests over a wide range of deformations with different volume fractions of carbon black fillings (0%, 4.7%, 8.9%, 12.8%, 16.4%, 19.7%, 22.7% and 25.2%). The results show that the stress-strain curve for carbon black filled rubber increases with the amount of filling, meaning that the rubber gradually becomes harder. We explore the correlation between the carbon black filling volume and the parameters of the Yeoh constitutive model by examining the Yeoh constitutive model to characterize the hyper-elastic mechanical behavior of rubber with different carbon black fillings. A quantitative relationship between the material parameters and the carbon black filling volume in the Yeoh constitutive model is presented. A method for calculating the material parameters of the Yeoh constitutive model is developed, and it predicts the correlation between the hyper-elastic properties of rubber and the volume fraction of the carbon black filling.
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