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Numerical Locking Problems for Parabolic Equations
Authors:Viorel Arn?utu  Ana-Maria Mo?neagu
Institution:1. Faculty of Mathematics , University “Al.I. Cuza,” , Ia?i , Romania varnautu@uaic.ro;3. Faculty of Mathematics , University “Al.I. Cuza,” , Ia?i , Romania
Abstract:We investigate the time evolution of a previous elliptic model. We study a parabolic model concerning the “numerical locking” phenomenon, namely a model for three-dimensional curved rods clamped at the endpoints. We show that the convergence of the numerical schemes is independent of the discretization parameters and the thickness of the rod. We present corresponding numerical experiments and we make a comparison with the results obtained for the hyperbolic model.
Keywords:Crank–Nicholson method  Finite element approximation  Numerical locking  Standard implicit scheme
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