A generalisation of the integral Maxwell model: the gK-BKZ model—frame invariance and analytical solutions

In this work, we present a generalisation of the Maxwell integral model by developing a new relaxation modulus based on the Mittag-Leffler function. The new model provides a better fit to linear experimental data compared to a classical 2-mode Maxwell model. The model is improved to become frame invariant and several analytical solutions are derived to better understand the behaviour of the model.