An h-adaptive thermo-mechanical phase field model for fracture
| Autor: | Mohammed A. Msekh, Timon Rabczuk, H. Badnava, Elahe Etemadi |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Work (thermodynamics)
Field (physics) business.industry Computer science Applied Mathematics General Engineering Phase (waves) Fracture mechanics 02 engineering and technology Structural engineering 01 natural sciences Computer Graphics and Computer-Aided Design GeneralLiterature_MISCELLANEOUS Finite element method 010101 applied mathematics 020303 mechanical engineering & transports 0203 mechanical engineering Path (graph theory) Fracture (geology) 0101 mathematics business Analysis Brittle fracture |
| Zdroj: | Finite Elements in Analysis and Design. 138:31-47 |
| ISSN: | 0168-874X |
| DOI: | 10.1016/j.finel.2017.09.003 |
| Popis: | In this work, brittle fracture and thermo-mechanical induced cracks are simulated using a phase field model in 2D and 3D continua in homogeneous and heterogeneous materials. The phase field model for fracture has specific regulations regarding the finite element mesh size. Therefore, a mesh refinement algorithm by adopting a predictor-corrector mesh refinement strategy is used in both applications of mechanical and thermo-mechanical fracture models. Several mechanical and thermo-mechanical examples are presented in this work to prove the capability of the proposed numerical implementation. The multi-field problems are solved using a staggered solution algorithm with and without the parallelization of the system equations. The simulation times of the tested specimens are compared for different meshing criteria, adaptive refinement, pre-refinement of the expected crack path, and the global refinement of the specimen. |
| Databáze: | OpenAIRE |
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