Local existence of solutions to the initial-value problem for one-dimensional strain-limiting viscoelasticity

Official URL: http://dx.doi.org/10.1016/j.jde.2020.06.052

In this work we prove local existence of strong solutions to the initial-value prob- lem arising in one-dimensional strain-limiting viscoelasticity, which is based on a nonlinear constitutive relation between the linearized strain, the rate of change of the linearized strain and the stress. We define an initial-value problem for the stress variable and then, under the assumption that the nonlinear constitutive function is strictly increasing, we convert the problem to a new form for the strain variable. Using the theory of variable coefficient heat equation together with a fixed point argument we prove local existence of solutions. Finally, for several constitutive functions widely used in the literature we show that the assumption on which the proof of existence is based is not violated.