Upperbounds for the GMRES residuals for some CFD - related problems,
Utrecht, the Netherlands, 1996 -> pdf-file
Mathematical and Numerical Analysis of Elastoplastic Material with Multi-Surface Stress-Strain Relation,
Kiel, Germany, 2001 submitted, 2002 published at dissertation.de (ISBN 3-89825-501-8), -> pdf-file, upgraded version, in color -> pdf-file
A quasi-static boundary value problem in multi-surface elastoplasticity. I: Analysis.
technical report 2003-16 of SFB "Numerical and Symbolic Scientific computing", also published in Math. Methods Appl. Sci. 27, No.14, 1697-1710 (2004) -> pdf-file
Multi-yield elastoplastic continuum-modeling and computations,
Feistauer, M. (ed.) et al., Numerical mathematics and advanced applications. Proceedings of ENUMATH 2003, the 5th European conference on numerical mathematics and advanced applications, Prague, Czech Republic, August 18-22, 2003. Berlin: Springer. 539-548 (2004) -> pdf-file
A quasi-static boundary value problem in multi-surface elastoplasticity. II: Numerical solution.
technical report 2004-11 of SFB "Numerical and Symbolic Scientific computing", also published in Math. Methods Appl. Sci. 28, No.8, 881-901 (2005) -> pdf-file
On a robust multigrid-preconditioned solver for incremental plasticity problems
Proceedings of IMET 2004 - Iterative Methods, Precondtioning & Numerical PDEs, Prague -> pdf-file
A convergent adaptive finite element method for the primal problem of elastoplasticity
Preprint No. 2005-12 of the Institute of Mathematics, Humboldt-Universität zu Berlin, also published in International Journal for Numerical Methods in Engineering 67, No. 13, 1851-1887 ( 2006) -> pdf-file
An efficient solution algorithm for elastoplasticity and its first implementation towards uniform h- and p- mesh refinements
de Castro, A. (ed.) et al., Numerical mathematics and advanced applications. Proceedings of ENUMATH 2005, the 6th European conference on numerical mathematics and advanced applications, Santiago de Compostela, Spain, July 18-22, 2005. Berlin: Springer. 1117-1125 (2006) -> pdf-file
Solution of Elastoplastic Problem based on the Moreau-Yosida Theorem
technical report 2006-05 of SFB "Numerical and Symbolic Scientific computing" -> pdf-file
Partly published as a conference proceeding on the conference MODELLING 2005 in Pilsen, Czech Republic, where it appeared as an article P. Gruber, J. Valdman, Implementation of Elastoplastic solver based on Moreau-Yosida Theorem, Mathematics and Computers in Simulation (2007) -> pdf-file
Numerical solution of the two-yield elastoplastic minimization problem
technical report 2006-18 of SFB "Numerical and Symbolic Scientific computing" -> pdf-file, also published in Computing 81, 35-52 (2007)
Functional A posteriori error estimates for problems with nonlinear boundary conditions
technical report 2006-25 of Johannes Radon Institute for computational and applied mathematics (RICAM) -> pdf-file, Journal of Numerical Mathematics 16, No. 1, 51-81 (2008)
Newton-Like Solver for Elastoplastic Problems with hardening and its Local Super-Linear Convergence
technical report 2007-06 of SFB "Numerical and Symbolic Scientific computing" -> pdf-file , submited to SIAM J. Scientific Computing
Functional a posteriori error estimates for incremental models in elasto-plasticity
technical report 2007-40 of Johannes Radon Institute for computational and applied mathematics (RICAM) -> pdf-file
Effective Minimization of Functional Majorant in A Posteriori Error Analysis
technical report 2008-07 of SFB "Numerical and Symbolic Scientific computing" -> pdf-file