Fractional Burgers models in creep and stress relaxation tests
Abstract
Classical and thermodynamically consistent fractional Burgers models are examined in creep and stress relaxation tests. Using the Laplace transform method, the creep compliance and relaxation modulus are obtained in integral form, that yielded, when compared to the thermodynamical requirements, the narrower range of model parameters in which the creep compliance is a Bernstein function while the relaxation modulus is completely monotonic. Moreover, the relaxation modulus may even be oscillatory function with decreasing amplitude. The asymptotic analysis of the creep compliance and relaxation modulus is performed near the initial time-instant and for large time as well.
Keywords
Cite
@article{arxiv.1901.01314,
title = {Fractional Burgers models in creep and stress relaxation tests},
author = {Aleksandar S. Okuka and Dušan Zorica},
journal= {arXiv preprint arXiv:1901.01314},
year = {2019}
}
Comments
The manuscript is submitted to the Applied Mathematical Modelling on 25-02-2019