VSE knjižnice (vzajemna bibliografsko-kataložna baza podatkov COBIB.SI)
  • Fracture of quasi-brittle solids by continuum and discrete-crack damage models and embedded discontinuity formulation [Elektronski vir]
    Stanić, Andjelka ; Brank, Boštjan ; Brancherie, Delphine
    We derive a finite element formulation for modelling fracture in 2d quasi-brittle solids. The kinematics of isoparametric quadrilateral is enriched by strong discontinuity in displacements in order ... to capture the discrete crack opening and sliding. To describe both the bulk and crack-surface dissipative phenomena induced by the crack propagation, a combination of continuum and discrete damage models is used. The continuum damage model describes dissipation in the bulk, which mainly occurs ahead of the crack front. The discrete damage model includes two uncoupled rigid-damage cohesive laws to deal with fracture energy release due to crack propagation in modes I and II. The numerical solution strategy is based on a local-global operator-split procedure and incorporates a crack-tracking algorithm for enforcing continuity of the crack path. Numerical examples illustrate very satisfying performance of the derived formulation in terms of mesh independency and robustness. The sensitivity of results on material parameters for mixed mode fracture is also illustrated.
    Vir: Engineering fracture mechanics. - ISSN 1873-7315 (Letn. 227, 15. marec/106924, 2020, str. 1-26)
    Vrsta gradiva - e-članek ; neleposlovje za odrasle
    Leto - 2020
    Jezik - angleški
    COBISS.SI-ID - 9088609

    Povezava(-e):

    https://doi.org/10.1016/j.engfracmech.2020.106924
    Repozitorij Univerze v Ljubljani – RUL
    DOI

vir: Engineering fracture mechanics. - ISSN 1873-7315 (Letn. 227, 15. marec/106924, 2020, str. 1-26)
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