Abstract
We study the global spatial regularity of solutions of generalized elasto-plastic models with linear hardening on smooth domains. Under natural smoothness assumptions on the data and the boundary we obtain u ∈ L∞((0, T); H3/2-δ(Ω)) for the displacements and z ∈ L∞((0, T); H1/2-δ(Ω)) for the internal variables. The proof relies on a reflection argument which gives the regularity result in directions normal to the boundary on the basis of tangential regularity results. Based on the regularity results we derive convergence rates for a finite element approximation of the models.
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More From: Mathematical Models and Methods in Applied Sciences
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