Micromechanically motivated finite-strain phase-field fracture model to investigate damage in crosslinked elastomers
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866914830013693952 |
|---|---|
| author | Josyula, S. P. Brede, M. Hesebeck, O. Koschek, K. Possart, W. Wulf, A. Zimmer, B. Diebels, S. |
| author_facet | Josyula, S. P. Brede, M. Hesebeck, O. Koschek, K. Possart, W. Wulf, A. Zimmer, B. Diebels, S. |
| contents | A micromechanically motivated phase-field damage model is proposed to investigate the fracture behaviour in crosslinked polyurethane adhesive. The crosslinked polyurethane adhesive typically show viscoelastic behaviour with geometric nonlinearity. The finite-strain viscoelastic behaviour is modelled using a micromechanical network model considering shorter and longer chain length distribution. The micromechanical viscoelastic network model also consider the softening due to breakage/debonding of the short chains with increase in deformation. The micromechanical model is coupled with the phase-field damage model to investigate the crack initiation and propagation. Critical energy release rate is needed as a material property to solve phase-field equation. The energy release rate is formulated based on the polymer chain network. The numerical investigation is performed using finite element method. The force-displacement curves from the numerical analysis and experiments are compared to validate the proposed material model. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_05511 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Micromechanically motivated finite-strain phase-field fracture model to investigate damage in crosslinked elastomers Josyula, S. P. Brede, M. Hesebeck, O. Koschek, K. Possart, W. Wulf, A. Zimmer, B. Diebels, S. Computational Engineering, Finance, and Science A micromechanically motivated phase-field damage model is proposed to investigate the fracture behaviour in crosslinked polyurethane adhesive. The crosslinked polyurethane adhesive typically show viscoelastic behaviour with geometric nonlinearity. The finite-strain viscoelastic behaviour is modelled using a micromechanical network model considering shorter and longer chain length distribution. The micromechanical viscoelastic network model also consider the softening due to breakage/debonding of the short chains with increase in deformation. The micromechanical model is coupled with the phase-field damage model to investigate the crack initiation and propagation. Critical energy release rate is needed as a material property to solve phase-field equation. The energy release rate is formulated based on the polymer chain network. The numerical investigation is performed using finite element method. The force-displacement curves from the numerical analysis and experiments are compared to validate the proposed material model. |
| title | Micromechanically motivated finite-strain phase-field fracture model to investigate damage in crosslinked elastomers |
| topic | Computational Engineering, Finance, and Science |
| url | https://arxiv.org/abs/2406.05511 |