Abstract
It has been long observed that cumbersome parameters are required for the traditional viscoelastic models to describe complex rheological behaviors. Inspired by the relationship between normal and anomalous diffusions, this paper tentatively employs t α to replace t, called as the scaling transformation, in the traditional creep compliance and relaxation modulus. With this methodology, the relaxation modulus is found to agree with the well-known Kohlrausch-Williams-Watts (KWW) stretched exponential function. The fitting results confirm that the proposed models accurately characterize rheological behaviors only with one more parameter α. Moreover, it is noted that the present formulations are directly related to the fractal derivative viscoelastic models and the index α is actually the order of the fractal derivative.
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Funding
The work described in this paper was supported by the National Natural Science Foundation of China (No. 11702084, 11402076), the Fundamental Research Funds for the Central Universities (2017B03114), the 111 project (Grant No. B12032), and Natural Science Foundation for Jiangsu Province (Grant No. BK20130841).
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Cai, W., Chen, W. Application of scaling transformation to characterizing complex rheological behaviors and fractal derivative modeling. Rheol Acta 57, 43–50 (2018). https://doi.org/10.1007/s00397-017-1054-8
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DOI: https://doi.org/10.1007/s00397-017-1054-8