• Medientyp: E-Artikel; Elektronische Ressource
  • Titel: Accelerated staggered coupling schemes for problems of thermoelasticity at finite strains
  • Beteiligte: Erbts, Patrick [VerfasserIn]; Düster, Alexander [VerfasserIn]
  • Erschienen: Elsevier Science, 2012
  • Sprache: Englisch
  • ISSN: 0898-1221
  • Schlagwörter: Partitioned coupling schemes ; Convergence acceleration ; Thermoelasticity ; Time adaptivity
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  • Beschreibung: This paper introduces a fully implicit partitioned coupling scheme for problems of thermoelasticity at finite strains utilizing the -version of the finite element method. The mechanical and the thermal fields are partitioned into symmetric subproblems where algorithmic decoupling has been obtained by means of an isothermal operator-split. Numerical relaxation methods have been implemented to accelerate the convergence of the algorithm. Such methods are well-known from coupled fluid-structure interaction problems leading to highly efficient algorithms. Having studied the influence of three different strategies: polynomial prediction methods, numerical relaxation with constant relaxation coefficients, its dynamic variant with a residual based relaxation coefficient and a variant of a reduced order model - quasi-Newton method, we present several numerical simulations of quasi-static problems investigating the performance of accelerated coupling schemes.