Pregledni rad
https://doi.org/10.21278/brod72407
ON MULTISCALE DAMAGE MODELLING OF HETEROGENEOUS MATERIALS USING NONLOCAL CONTINUUM THEORY
Jurica Sorić
; Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb
Tomislav Lesičar
orcid.org/0000-0003-3837-3059
; Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb
Filip Putar
; AVL-AST d.o.o.
Zdenko Tonković
; Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb
Sažetak
An overview of the modelling of quasi-brittle as well as ductile damage is given. The multiscale procedure employing the nonlocal continuum theory is described in more detail. The softening is introduced at the microlevel in the microstructural volume element and after that the homogenization procedure state variables are mapped at the macrolevel material point via the scale transition approach. In the case of quasi-brittle softening the C1 continuous finite element discretization is applied at both micro- and macrolevel. At the modelling of ductile damage response, the macrolevel is also discretized by the C1 finite element formulation, while the microscale utilizes quadrilateral mixed finite elements employing the nonlocal equivalent plastic strain and gradient-enhanced elastoplasticity. All approaches presented are verified in the standard examples.
Ključne riječi
heterogeneous material; two-scale approach; computational homogenization; quasi-brittle damage; ductile damag
Hrčak ID:
267651
URI
Datum izdavanja:
1.10.2021.
Posjeta: 852 *