Details
| Translated title of the contribution | A two-scale model of granular materials |
|---|---|
| Original language | German |
| Pages (from-to) | 169-174 |
| Number of pages | 6 |
| Journal | Bauingenieur |
| Volume | 86 |
| Issue number | 4 |
| Publication status | Published - Apr 2011 |
Abstract
In this paper a new modeling approach for granular materials is proposed. It enables the consideration of problems in which localizations occur, like e.g. in shear bands. The approach is based on a discrete method that takes into account the grain structure and the interaction between individual grains. The effective behavior of the discrete model is determined via a homogenization scheme and a continuum model is fit to this behavior. Now, in domains of large deformations the granular material is modeled by the computationally expensive discrete method, while in the remaining domains the material is considered as continuum and modeled by the effcient finite element method. For this purpose a scheme is developed to couple the continuum and the discrete model at the interfaces. The resulting two-scale model enables the consideration of problems not feasible with former models.
ASJC Scopus subject areas
- Engineering(all)
- Civil and Structural Engineering
- Engineering(all)
- Building and Construction
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In: Bauingenieur, Vol. 86, No. 4, 04.2011, p. 169-174.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Zwei-Skalen Modell für die Beschreibung granularer Materialien
AU - Wellmann, C.
AU - Wriggers, P.
PY - 2011/4
Y1 - 2011/4
N2 - In this paper a new modeling approach for granular materials is proposed. It enables the consideration of problems in which localizations occur, like e.g. in shear bands. The approach is based on a discrete method that takes into account the grain structure and the interaction between individual grains. The effective behavior of the discrete model is determined via a homogenization scheme and a continuum model is fit to this behavior. Now, in domains of large deformations the granular material is modeled by the computationally expensive discrete method, while in the remaining domains the material is considered as continuum and modeled by the effcient finite element method. For this purpose a scheme is developed to couple the continuum and the discrete model at the interfaces. The resulting two-scale model enables the consideration of problems not feasible with former models.
AB - In this paper a new modeling approach for granular materials is proposed. It enables the consideration of problems in which localizations occur, like e.g. in shear bands. The approach is based on a discrete method that takes into account the grain structure and the interaction between individual grains. The effective behavior of the discrete model is determined via a homogenization scheme and a continuum model is fit to this behavior. Now, in domains of large deformations the granular material is modeled by the computationally expensive discrete method, while in the remaining domains the material is considered as continuum and modeled by the effcient finite element method. For this purpose a scheme is developed to couple the continuum and the discrete model at the interfaces. The resulting two-scale model enables the consideration of problems not feasible with former models.
UR - http://www.scopus.com/inward/record.url?scp=79955386279&partnerID=8YFLogxK
M3 - Artikel
AN - SCOPUS:79955386279
VL - 86
SP - 169
EP - 174
JO - Bauingenieur
JF - Bauingenieur
SN - 0005-6650
IS - 4
ER -