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- Title
Improved Staggered Algorithm for Phase-Field Brittle Fracture with the Local Arc-LengthMethod.
- Authors
Zhijian Wu; Li Guo; Jun Hong
- Abstract
The local arc-length method is employed to control the incremental loading procedure for phase-field brittle fracture modeling. An improved staggered algorithm with energy and damage iterative tolerance convergence criteria is developed based on the residuals of displacement and phase-field. The improved staggered solution scheme is implemented in the commercial software ABAQUS with user-defined element subroutines. The layered system of finite elements is utilized to solve the coupled elastic displacement and phase-field fracture problem. A one-element benchmark test compared with the analytical solution was conducted to validate the feasibility and accuracy of the developed method. Our study shows that the result calculated with the developed method does not depend on the selected size of loading increments. The results of several numerical experiments show that the improved staggered algorithm is efficient for solving the more complex brittle fracture problems.
- Subjects
BRITTLE fractures; INCREMENTAL motion control; ALGORITHMS; ANALYTICAL solutions; DIGITAL image correlation; CRACK propagation (Fracture mechanics)
- Publication
CMES-Computer Modeling in Engineering & Sciences, 2023, Vol 134, Issue 1, p611
- ISSN
1526-1492
- Publication type
Article
- DOI
10.32604/cmes.2022.020694