Journal
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
Volume 312, Issue -, Pages 167-185Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cma.2016.05.006
Keywords
Phase field; Viscoplasticity; Fracture; Finite deformation
Funding
- Aachen Institute for Advanced Study in Computational Engineering Science (AICES) postdoctoral fellowship grant
Ask authors/readers for more resources
A phase field method for brittle fracture is formulated for a finite strain elasto-viscoplastic material using a novel obstacle phase field energy model. The obstacle energy model results in a crack profile with compact support, and thus gives a physically realistic description of the material behaviour at the vicinity of the crack tip. The resulting variational inequality is discretised by a finite element method, and is efficiently solved using a reduced space NEWTON method. The solution, accuracy and numerical performance of this method is compared with a conventional phase field energy model for brittle fracture through representative examples, and a significant reduction in the numerical solution cost is demonstrated. (C) 2016 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available