159 citations · 160 across the 6 of their papers we have counts for
6 papers
Coupled thermo-chemo-mechanical phase field-based modelling of hydrogen-assisted cracking in girth welds
L. Castro, Y. Navidtehrani. C. Betegón, E. Martínez-Pañeda
A new computational framework is presented to predict the structural integrity of welds in hydrogen transmission pipelines. The framework combines: (i) a thermo-mechanical weld pro…
A generalised framework for phase field-based modelling of coupled problems: application to thermo-mechanical fracture, hydraulic fracture, hydrogen embrittlement and corrosion
Y. Navidtehrani, C. Betegón, E. Martínez-Pañeda
We present a novel, generalised formulation to treat coupled structural integrity problems by combining phase field and multi-physics modelling. The approach exploits the versatili…
A phase field model for hydraulic fracture: Drucker-Prager driving force and a hybrid coupling strategy
Y. Navidtehrani, C. Betegón, J. Vallejos +1
Recent years have seen a significant interest in using phase field approaches to model hydraulic fracture, so as to optimise a process that is key to industries such as petroleum e…
Griffith-based analysis of crack initiation location in a Brazilian test
Y. Navidtehrani, C. Betegón, R. W. Zimmerman +1
The Brazilian test has been extremely popular while prompting significant debate. The main source of controversy is rooted in its indirect nature; the material tensile strength is…
A simple and robust Abaqus implementation of the phase field fracture method
Yousef Navidtehrani, Covadonga Betegón, Emilio Martínez-Pañeda
The phase field fracture method is attracting significant interest. Phase field approaches have enabled predicting - on arbitrary geometries and dimensions - complex fracture pheno…
A unified Abaqus implementation of the phase field fracture method using only a user material subroutine
Yousef Navidtehrani, Covadonga Betegón, Emilio Martínez-Pañeda
We present a simple and robust implementation of the phase field fracture method in Abaqus. Unlike previous works, only a user material (UMAT) subroutine is used. This is achieved…