Inserted: 30 apr 2019
Last Updated: 1 may 2019
In this paper we prove the existence of solutions for a class of viscoelastic dynamic systems on time–dependent cracked domains, with possibly degenerate viscosity coefficients. Under stronger regularity assumptions we also show a uniqueness result. Finally, we exhibit an example where the energy-dissipation balance is not satisfied, showing there is an additional dissipation due to the crack growth.
Keywords: elastodynamics, Viscoelasticity, linear second order hyperbolic systems, dynamic fracture mechanics, cracking domains