On adaptive refinement techniques in multi-field problems including cohesive fracture (Articolo in rivista)

Type
Label
  • On adaptive refinement techniques in multi-field problems including cohesive fracture (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.cma.2004.10.014 (literal)
Alternative label
  • Schrefler B. A.; Secchi S.; Simoni L., (2006)
    On adaptive refinement techniques in multi-field problems including cohesive fracture
    in Computer methods in applied mechanics and engineering
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Schrefler B. A.; Secchi S.; Simoni L., (literal)
Pagina inizio
  • 444 (literal)
Pagina fine
  • 461 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 195 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 195 (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1, 3: Department of Structural and Transportation Engineering, University of Padova, Via Marzolo 9, 35121 Padova, Italy 2: Department of Structural and Transportation Engineering, University of Padova, Via Marzolo 9, 35121 Padova, Italy (literal)
Titolo
  • On adaptive refinement techniques in multi-field problems including cohesive fracture (literal)
Abstract
  • This paper presents a generalized finite element formulation which incorporates solid and fluid phases together with a temperature field. The model is developed to obtain time-dependent solutions of complex 2-D cases, such as concrete gravity dams subjected to loading-unloading cycles, non-homogeneous specimens subjected to thermo-mechanical effects, etc. The solid behaviour incorporates a fully coupled cohesive-fracture discrete model, which includes thermal and hydraulic loads and the resulting crack nucleation and propagation is fully described. The evolution of fractures leads to continuous topological changes of the domain and these are handled by systematic local remeshing of the domain and a corresponding change of fluid and thermal boundary conditions. Optimality of the size of automatically generated finite elements is controlled, and the mesh density is adaptively adjusted on the basis of an a posteriori error estimation. For the process zone an element threshold number is introduced to obtain mesh independent results. The presented applications demonstrate the efficiency of the procedure and the importance of mesh refinement in multi-physics problems. (literal)
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