Search Results - "Valdman, J"

Error identities for variational problems with obstacles by Repin, S., Valdman, J.

“…The paper is devoted to analysis of a class of nonlinear free boundary problems that are usually solved by variational methods based on primal, dual or…”
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A TFETI domain decomposition solver for elastoplastic problems by Čermák, M., Kozubek, T., Sysala, S., Valdman, J.

“…We propose an algorithm for the efficient parallel implementation of elastoplastic problems with hardening based on the so-called TFETI (Total Finite Element…”
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Additive Schwarz preconditioner for the finite volume element discretization of symmetric elliptic problems by Marcinkowski, L., Rahman, T., Loneland, A., Valdman, J.

“…A symmetric and a nonsymmetric variant of the additive Schwarz preconditioner are proposed for the solution of a class of finite volume element discretization…”
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A Posteriori Error Estimates for Two-Phase Obstacle Problem by Repin, S., Valdman, J.

“…For the two–phase obstacle problem we derive the basic error identity which yields natural measure of the distance to the exact solution. For this measure we…”
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Fast MATLAB assembly of FEM matrices in 2D and 3D: Edge elements by Anjam, I., Valdman, J.

“…We propose an effective and flexible way to assemble finite element stiffness and mass matrices in MATLAB. We apply this for problems discretized by edge…”
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Numerical solution of the two-yield elastoplastic minimization problem by HOFINGER, A, VALDMAN, J

“…This paper concentrates on fast calculation techniques for the two-yield elastoplastic problem, a locally defined, convex but non-smooth minimization problem…”
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Efficient and flexible MATLAB implementation of 2D and 3D elastoplastic problems by Čermák, M., Sysala, S., Valdman, J.

“…Fully vectorized MATLAB implementation of various elastoplastic problems formulated in terms of displacement is considered. It is based on implicit time…”
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On the SCD semismooth Newton method for generalized equations with application to a class of static contact problems with Coulomb friction by Gfrerer, H, Mandlmayr, M, Outrata, J. V, Valdman, J

“…In the paper, a variant of the \ssstar Newton method is developed for the numerical solution of generalized equations, in which the multi-valued part is a…”
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A quasi-static boundary value problem in multi-surface elastoplasticity: Part 1-Analysis by Brokate, Martin, Carstensen, Carsten, Valdman, Jan

“…The quasi‐static evolution of an elastoplastic body with a multi‐surface constitutive law of linear kinematic hardening type allows the modelling of curved…”
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A quasi-static boundary value problem in multi-surface elastoplasticity: part 2-numerical solution by Brokate, Martin, Carstensen, Carsten, Valdman, Jan

“…Multi‐yield elastoplasticity models a material with more than one plastic state and hence allows for refined approximation of irreversible deformations…”
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A TFETI Domain Decomposition Solver for Elastoplastic Problems by Čermák, M, Kozubek, T, Sysala, S, Valdman, J

“…We propose an algorithm for the efficient parallel implementation of elastoplastic problems with hardening based on the so-called TFETI (Total Finite Element…”
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Personal experience with mechanical intestinal anastomoses by Pazdera, M, Hladký, M, Valdman, J, Fidler, F, Beno, P

“…The authors evaluated the results of operations of the large intestine and rectum on account of cancer, covering a 4-year period. In all instances a stapler or…”
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A posteriori error estimates for approximate solutions of Barenblatt-Biot poroelastic model by Nordbotten, J. M, Rahman, T, Repin, S. I, Valdman, J

“…The paper is concerned with the Barenblatt-Biott model in the theory of poroelasticity. We derive a guaranteed estimate of the difference between exact and…”
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Breast carcinoma in women by Zábranský, E, Valdman, J

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