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Browsing by Author "Carstensen, Carsten"
Now showing items 1-12 of 12
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2006-01-01BuchA convergent adaptive finite element method for an optimal design problem Bartels, Sören; Carstensen, CarstenAbstract. The optimal design problem for maximal torsion stiffness of an infinite bar of given geometry and unknown distribution of two materials of prescribed amounts is one model example in topology optimisation. It ...
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2005-08-05BuchA Convergent Adaptive Finite Element Method For The Primal Problem Of Elastoplasticity Carstensen, Carsten; Orlando, Antonio; Valdman, JanThe boundary value problem representing one time step of the primal formulation of elastoplasticity with positive hardening leads to a variational inequality of the second kind with some non-differentiable functional. This ...
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2005-03-10BuchA Posteriori Dual-Mixed Adaptive Finite Element Error Control for Lamé and Stokes Equations Carstensen, Carsten; Causin, Paola; Sacco, RiccardoA unified and robust mathematical model for compressible and incompressible linear elasticity can be obtained by rephrasing the Herrmann formulation within the Hellinger-Reissner principle. This quasi-optimally converging ...
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2009-07-02BuchA posteriori error analysis for conforming MITC elements for Reissner-Mindlin plates Carstensen, Carsten; Hu, JunThis paper establishes a unified a posteriori error estimator for a large class of conforming finite element methods for the Reissner-Mindlin plate problem. The analysis is based on some assumption (H) on the consistency ...
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2006-06-23BuchA unifying theory of a posteriori error control for nonconforming finite element methods Carstensen, Carsten; Hu, JunResidual-based a posteriori error estimates were derived within one unifying framework for lowest-order conforming, nonconforming, and mixed finite element schemes in [C. Carstensen, Numerische Mathematik 100 (2005) 617-637]. ...
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2004-03-02BuchA Unifying Theory Of A Posteriori Finite Element Error Control Carstensen, CarstenResidual-based a posteriori error estimates are derived wihtin a unified setting for lowest-order conforming, nonconforming, and mixed finite element schemes. The various residuals are identified for all techniques and ...
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2006-01-01BuchConvergence of adaptive FEM for a class of degenerate convex minimization problems Carstensen, CarstenA class of degenerate convex minimization problems allows for some adaptive finite element method (AFEM) to compute strongly converging stress approximations. The algorithm AFEM consists of successive loops of the form ...
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2005-11-02BuchError Reduction And Convergence For An Adaptive Mixed Finite Element Method Carstensen, Carsten; Hoppe, Ronald H.W.An adaptive mixed finite element method (AMFEM) is designed to guarantee an error reduction, also known as saturation property: After each refinement step, the error for the fine mesh is strictly smaller than the error for ...
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2011-09-20BuchEstimator competition for Poisson problems Carstensen, Carsten
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2005-04-08BuchFramework For The A Posteriori Error Analysis Of Nonconforming Finite Elements Carstensen, Carsten; Hu, Jun; Orlando, AntonioThis paper establishes a unified framework for the a posteriori error analysis of a large class of nonconforming finite element methods. The theory assures reliability and efficiency of explicit residual error estimates ...
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2021-09-09ZeitschriftenartikelGuaranteed lower bounds on eigenvalues of elliptic operators with a hybrid high-order method Carstensen, Carsten; Ern, Alexandre; Puttkammer, SophieThis paper introduces a novel hybrid high-order (HHO) method to approximate the eigenvalues of a symmetric compact differential operator. The HHO method combines two gradient reconstruction operators by means of a parameter ...
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2011-08-11BuchTowards effective simulation of effective elastoplastic evolution Carstensen, Carsten; Huth, RobertThis paper summarises the general strategy for time evolving finite elastoplasticity and outlines encountered computational challenges in form of numerical benchmarks. Each time-step of some natural implicit time-discretisation ...