Quasistatic nonassociative plasticity at finite strains

Autor: Stefanelli, Ulisse, Vikelis, Andreas
Rok vydání: 2024
Předmět:
Druh dokumentu: Working Paper
Popis: We investigate finite-strain elastoplastic evolution in the nonassociative setting. The constitutive material model is formulated in variational terms and coupled with the quasistatic equilibrium system. We introduce measure-valued energetic solutions and prove their existence via a time discretization approach. The existence theory hinges on a suitable regularization of the dissipation term via a space-time mollification. Eventually, we discuss the possibility of solving the problem in the setting of functions, instead of measures.
Databáze: arXiv