Micromechanically motivated finite-strain phase-field fracture model to investigate damage in crosslinked elastomers
<|reference_start|>Micromechanically motivated finite-strain phase-field fracture model to investigate damage in crosslinked elastomers: 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.<|reference_end|>
@article{josyula2024micromechanically,
    title={Micromechanically motivated finite-strain phase-field fracture model to
  investigate damage in crosslinked elastomers},
    author={S. P. Josyula, M. Brede, O. Hesebeck, K. Koschek, W. Possart, A. Wulf,
  B. Zimmer, S. Diebels},
    journal={arXiv preprint arXiv:2406.05511},
    year={2024},
    archivePrefix={arXiv},
    eprint={2406.05511},
    primaryClass={cs.CE}
}