Details
| Original language | English |
|---|---|
| Pages (from-to) | 941-966 |
| Number of pages | 26 |
| Journal | Computational mechanics |
| Volume | 65 |
| Issue number | 4 |
| Early online date | 11 Dec 2019 |
| Publication status | Published - Apr 2020 |
Abstract
Industrial forming processes depend on several physical effects, including large deformation thermomechanical damage, localized near the contact zone of the forming tools. The main challenge in this process relies on the detailed knowledge of the desired thermoplastic effects at finite strains and the undesired initiation of macro-cracks. For the numerical solution of this problem, a regularized sharp crack surface in the framework of a phase-field approach is combined here with a modified, thermomechanical Gurson–Tvergaard–Needelman GTN-type plasticity model, such that we obtain a thermodynamically consistent framework. This allows to adapt this highly complex multi-field model using variationally consistent Mortar contact formulations in a straightforward manner. Eventually, the proposed approach is tested on complex three-dimensional geometries, emanating from industrial relevant forming processes.
Keywords
- Ductile fracture modeling, Finite deformations, GTN model, Mortar contact method, Phase-field approach, Thermomechanics
ASJC Scopus subject areas
- Engineering(all)
- Computational Mechanics
- Engineering(all)
- Ocean Engineering
- Engineering(all)
- Mechanical Engineering
- Computer Science(all)
- Computational Theory and Mathematics
- Mathematics(all)
- Computational Mathematics
- Mathematics(all)
- Applied Mathematics
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In: Computational mechanics, Vol. 65, No. 4, 04.2020, p. 941-966.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Porous-ductile fracture in thermo-elasto-plastic solids with contact applications
AU - Krüger, M.
AU - Dittmann, M.
AU - Aldakheel, F.
AU - Härtel, A.
AU - Wriggers, P.
AU - Hesch, C.
N1 - Funding Information: Support for this research was provided by the Deutsche Forschungsgemeinschaft (DFG) under Grants HE5943/8-1 and DI2306/1-1. This support is gratefully acknowledged.
PY - 2020/4
Y1 - 2020/4
N2 - Industrial forming processes depend on several physical effects, including large deformation thermomechanical damage, localized near the contact zone of the forming tools. The main challenge in this process relies on the detailed knowledge of the desired thermoplastic effects at finite strains and the undesired initiation of macro-cracks. For the numerical solution of this problem, a regularized sharp crack surface in the framework of a phase-field approach is combined here with a modified, thermomechanical Gurson–Tvergaard–Needelman GTN-type plasticity model, such that we obtain a thermodynamically consistent framework. This allows to adapt this highly complex multi-field model using variationally consistent Mortar contact formulations in a straightforward manner. Eventually, the proposed approach is tested on complex three-dimensional geometries, emanating from industrial relevant forming processes.
AB - Industrial forming processes depend on several physical effects, including large deformation thermomechanical damage, localized near the contact zone of the forming tools. The main challenge in this process relies on the detailed knowledge of the desired thermoplastic effects at finite strains and the undesired initiation of macro-cracks. For the numerical solution of this problem, a regularized sharp crack surface in the framework of a phase-field approach is combined here with a modified, thermomechanical Gurson–Tvergaard–Needelman GTN-type plasticity model, such that we obtain a thermodynamically consistent framework. This allows to adapt this highly complex multi-field model using variationally consistent Mortar contact formulations in a straightforward manner. Eventually, the proposed approach is tested on complex three-dimensional geometries, emanating from industrial relevant forming processes.
KW - Ductile fracture modeling
KW - Finite deformations
KW - GTN model
KW - Mortar contact method
KW - Phase-field approach
KW - Thermomechanics
UR - http://www.scopus.com/inward/record.url?scp=85076595289&partnerID=8YFLogxK
U2 - 10.1007/s00466-019-01802-3
DO - 10.1007/s00466-019-01802-3
M3 - Article
AN - SCOPUS:85076595289
VL - 65
SP - 941
EP - 966
JO - Computational mechanics
JF - Computational mechanics
SN - 0178-7675
IS - 4
ER -