PhaseFieldUEL

PhaseFieldUEL.zip: A phase field formulation for hydrogen assisted cracking. We present a phase field modeling framework for hydrogen assisted cracking. The model builds upon a coupled mechanical and hydrogen diffusion response, driven by chemical potential gradients, and a hydrogen-dependent fracture energy degradation law grounded on first principles calculations. The coupled problem is solved in an implicit time integration scheme, where displacements, phase field order parameter and hydrogen concentration are the primary variables. We show that phase field formulations for fracture are particularly suitable to capture material degradation due to hydrogen. Specifically, we model (i) unstable crack growth in the presence of hydrogen, (ii) failure stress sensitivity to hydrogen content in notched specimens, (iii) cracking thresholds under constant load, (iv) internal hydrogen assisted fracture in cracked specimens, and (v) complex crack paths arising from corrosion pits. Computations reveal a good agreement with experiments, highlighting the predictive capabilities of the present scheme. The work could have important implications for the prediction and prevention of catastrophic failures in corrosive environments. The finite element code developed can be downloaded from url{http://www.empaneda.com/codes}.


References in zbMATH (referenced in 14 articles , 1 standard article )

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  1. Dinachandra, Moirangthem; Alankar, Alankar: Adaptive finite element modeling of phase-field fracture driven by hydrogen embrittlement (2022)
  2. Bharali, Ritukesh; Larsson, Fredrik; Jänicke, Ralf: Computational homogenisation of phase-field fracture (2021)
  3. Chen, Yang; Gélébart, Lionel; Marano, Aldo; Marrow, James: FFT phase-field model combined with cohesive composite voxels for fracture of composite materials with interfaces (2021)
  4. Hirshikesh, H.; Pramod, A. L. N.; Waisman, Haim; Natarajan, S.: Adaptive phase field method using novel physics based refinement criteria (2021)
  5. Lampron, Olivier; Therriault, Daniel; Lévesque, Martin: An efficient and robust monolithic approach to phase-field quasi-static brittle fracture using a modified Newton method (2021)
  6. Simoes, Marlini; Martínez-Pañeda, Emilio: Phase field modelling of fracture and fatigue in shape memory alloys (2021)
  7. Tojaga, Vedad; Kulachenko, Artem; Östlund, Sören; Gasser, T. Christian: Modeling multi-fracturing fibers in fiber networks using elastoplastic Timoshenko beam finite elements with embedded strong discontinuities -- formulation and staggered algorithm (2021)
  8. Wu, Jian-Ying; Huang, Yuli; Zhou, Hao; Nguyen, Vinh Phu: Three-dimensional phase-field modeling of mode I + II/III failure in solids (2021)
  9. Yoshioka, Keita; Mollaali, Mostafa; Kolditz, Olaf: Variational phase-field fracture modeling with interfaces (2021)
  10. Li, She; Cui, Xiangyang: (N)-sided polygonal smoothed finite element method (nSFEM) with non-matching meshes and their applications for brittle fracture problems (2020)
  11. Quintanas-Corominas, A.; Turon, A.; Reinoso, J.; Casoni, E.; Paggi, M.; Mayugo, J. A.: A phase field approach enhanced with a cohesive zone model for modeling delamination induced by matrix cracking (2020)
  12. Wu, Jian-Ying; Huang, Yuli; Nguyen, Vinh Phu: On the BFGS monolithic algorithm for the unified phase field damage theory (2020)
  13. Wu, Jian-Ying; Mandal, Tushar Kanti; Vinh Phu Nguyen: A phase-field regularized cohesive zone model for hydrogen assisted cracking (2020)
  14. Martínez-Pañeda, Emilio; Golahmar, Alireza; Niordson, Christian F.: A phase field formulation for hydrogen assisted cracking (2018)