Details
| Original language | English |
|---|---|
| Article number | 112730 |
| Journal | Computer Methods in Applied Mechanics and Engineering |
| Volume | 361 |
| Early online date | 20 Nov 2019 |
| Publication status | Published - 1 Apr 2020 |
Abstract
Phase-field methods to regularize sharp interfaces represent a well established technique nowadays. In fracture mechanics, recent works have shown the capability of the method for brittle as well as ductile problems formulated within the fully non-linear regime. In this contribution, we introduce a framework to simulate porous-ductile fracture in isotropic thermo-elasto-plastic solids undergoing large deformations. Therefore, a modified Gurson–Tvergaard–Needleman GTN-type plasticity model is combined with a phase-field fracture approach to account for a temperature-dependent growth of voids on micro-scale followed by crack initiation and propagation on macro-scale. The multi-physical formulation is completed by the incorporation of an energy transfer into the thermal field such that the temperature distribution depends on the evolution of the plastic strain and the crack phase-field. Eventually, this physically comprehensive fracture formulation is validated by experimental data.
Keywords
- Ductile fracture, GTN model, Isogeometric analysis, Phase-field approach, Thermomechanics
ASJC Scopus subject areas
- Engineering(all)
- Computational Mechanics
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
- Physics and Astronomy(all)
- General Physics and Astronomy
- Computer Science(all)
- Computer Science Applications
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In: Computer Methods in Applied Mechanics and Engineering, Vol. 361, 112730, 01.04.2020.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Phase-field modeling of porous-ductile fracture in non-linear thermo-elasto-plastic solids
AU - Dittmann, M.
AU - Aldakheel, F.
AU - Schulte, J.
AU - Schmidt, F.
AU - Krüger, M.
AU - Wriggers, P.
AU - Hesch, C.
N1 - Funding information: Support for the present research was provided by the Deutsche Forschungsgemeinschaft (DFG), Germany under grant HE5943/8-1 and DI2306/1-1 . The authors C. Hesch and M. Dittmann gratefully acknowledge this support. The authors P. Wriggers and F. Aldakheel thank the DFG for their financial support of the Collaborative Research Centre 1153. Appendix
PY - 2020/4/1
Y1 - 2020/4/1
N2 - Phase-field methods to regularize sharp interfaces represent a well established technique nowadays. In fracture mechanics, recent works have shown the capability of the method for brittle as well as ductile problems formulated within the fully non-linear regime. In this contribution, we introduce a framework to simulate porous-ductile fracture in isotropic thermo-elasto-plastic solids undergoing large deformations. Therefore, a modified Gurson–Tvergaard–Needleman GTN-type plasticity model is combined with a phase-field fracture approach to account for a temperature-dependent growth of voids on micro-scale followed by crack initiation and propagation on macro-scale. The multi-physical formulation is completed by the incorporation of an energy transfer into the thermal field such that the temperature distribution depends on the evolution of the plastic strain and the crack phase-field. Eventually, this physically comprehensive fracture formulation is validated by experimental data.
AB - Phase-field methods to regularize sharp interfaces represent a well established technique nowadays. In fracture mechanics, recent works have shown the capability of the method for brittle as well as ductile problems formulated within the fully non-linear regime. In this contribution, we introduce a framework to simulate porous-ductile fracture in isotropic thermo-elasto-plastic solids undergoing large deformations. Therefore, a modified Gurson–Tvergaard–Needleman GTN-type plasticity model is combined with a phase-field fracture approach to account for a temperature-dependent growth of voids on micro-scale followed by crack initiation and propagation on macro-scale. The multi-physical formulation is completed by the incorporation of an energy transfer into the thermal field such that the temperature distribution depends on the evolution of the plastic strain and the crack phase-field. Eventually, this physically comprehensive fracture formulation is validated by experimental data.
KW - Ductile fracture
KW - GTN model
KW - Isogeometric analysis
KW - Phase-field approach
KW - Thermomechanics
UR - http://www.scopus.com/inward/record.url?scp=85075861360&partnerID=8YFLogxK
U2 - 10.1016/j.cma.2019.112730
DO - 10.1016/j.cma.2019.112730
M3 - Article
AN - SCOPUS:85075861360
VL - 361
JO - Computer Methods in Applied Mechanics and Engineering
JF - Computer Methods in Applied Mechanics and Engineering
SN - 0045-7825
M1 - 112730
ER -