Existence of global solutions and decay estimates for a viscoelastic Petrovsky equation with a delay term in the non-linear internal feedback
Date
2017-02-27
Authors
Mezouar, Nadia
Abdelli, Mama
Rachah, Amira
Journal Title
Journal ISSN
Volume Title
Publisher
Texas State University, Department of Mathematics
Abstract
In this article we consider a nonlinear viscoelastic Petrovsky equation in a bounded domain with a delay term in the weakly nonlinear internal feedback:
|ut|lutt + ∆2u - ∆utt - ∫0t h(t - s)∆2u(s) ds
+ μ1g1 (ut(x, t)) + μ2g2 (ut(x, t - τ)) = 0
We prove the existence of global solutions in suitable Sobolev spaces by using the energy method combined with Faedo-Galarkin method under condition on the weight of the delay term in the feedback and the weight of the term without delay. Furthermore, we study general stability estimates by using some properties of convex functions.
Description
Keywords
Global solution, Delay term, General decay, Multiplier method, Weak frictional damping, Convexity, Viscoelastic Petrovsky equation
Citation
Mezouar, N., Abdelli, M., & Rachah, A. (2017). Existence of global solutions and decay estimates for a viscoelastic Petrovsky equation with a delay term in the non-linear internal feedback. <i>Electronic Journal of Differential Equations, 2017</i>(58), pp. 1-25.
Rights
Attribution 4.0 International