512 citations · 1.5k across the 13 of their papers we have counts for
14 papers
Accelerated high-cycle phase field fatigue predictions
P. K. Kristensen, A. Golahmar, E. Martínez-Pañeda +1
Phase field fracture models have seen widespread application in the last decade. Among these applications, its use to model the evolution of fatigue cracks has attracted particular…
A phase field model for high-cycle fatigue: total-life analysis
A. Golahmar, C. F. Niordson, E. Martínez-Pañeda
We present a generalised phase field formulation for predicting high-cycle fatigue in metals. Different fatigue degradation functions are presented, together with new damage accumu…
A phase field model for hydrogen-assisted fatigue
Alireza Golahmar, Philip K. Kristensen, Christian F. Niordson +1
We present a new theoretical and numerical phase field-based formulation for predicting hydrogen-assisted fatigue. The coupled deformation-diffusion-damage model presented enables…
An assessment of phase field fracture: crack initiation and growth
P. K. Kristensen, C. F. Niordson, E. Martínez-Pañeda
The phase field paradigm, in combination with a suitable variational structure, has opened a path for using Griffith's energy balance to predict the fracture of solids. These so-ca…
Applications of phase field fracture in modelling hydrogen assisted failures
P. K. Kristensen, C. F. Niordson, E. Martínez-Pañeda
The phase field fracture method has emerged as a promising computational tool for modelling a variety of problems including, since recently, hydrogen embrittlement and stress corro…
Interaction of void spacing and material size effect on inter-void flow localisation
I. Holte, A. Srivastava, E. Martínez-Pañeda +2
The ductile fracture process in porous metals due to growth and coalescence of micron scale voids is not only affected by the imposed stress state but also by the distribution of t…
A phase field model for elastic-gradient-plastic solids undergoing hydrogen embrittlement
Philip K. Kristensen, Christian F. Niordson, Emilio Martínez-Pañeda
We present a gradient-based theoretical framework for predicting hydrogen assisted fracture in elastic-plastic solids. The novelty of the model lies in the combination of: (i) stre…
The role of plastic strain gradients in the crack growth resistance of metals
Emilio Martínez-Pañeda, Vikram S. Deshpande, Christian F. Niordson +1
Crack advance from short or long pre-cracks is predicted by the progressive failure of a cohesive zone in a strain gradient, elasto-plastic solid. The presence of strain gradients…
Steady-state fracture toughness of elastic-plastic solids: Isotropic versus kinematic hardening
Kristian J. Juul, Emilio Martínez-Pañeda, Kim L. Nielsen +1
The fracture toughness for a mode I/II crack propagating in a ductile material has been subject to numerous investigations. However, the influence of the material hardening law has…
A phase field formulation for hydrogen assisted cracking
Emilio Martínez-Pañeda, Alireza Golahmar, Christian F. Niordson
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…
Strain gradient plasticity-based modeling of hydrogen environment assisted cracking
Emilio Martínez-Pañeda, Christian F. Niordson, Richard P. Gangloff
Finite element analysis of stress about a blunt crack tip, emphasizing finite strain and phenomenological and mechanism-based strain gradient plasticity (SGP) formulations, is inte…
A finite element framework for distortion gradient plasticity with applications to bending of thin foils
Emilio Martínez-Pañeda, Christian F. Niordson, Lorenzo Bardella
A novel general purpose Finite Element framework is presented to study small-scale metal plasticity. A distinct feature of the adopted distortion gradient plasticity formulation, w…
Strain gradient plasticity modeling of hydrogen diffusion to the crack tip
Emilio Martínez-Pañeda, Susana del Busto, Christian F. Niordson +1
In this work hydrogen diffusion towards the fracture process zone is examined accounting for local hardening due to geometrically necessary dislocations (GNDs) by means of strain g…
On fracture in finite strain gradient plasticity
Emilio Martínez-Pañeda, Christian F. Niordson
In this work a general framework for damage and fracture assessment including the effect of strain gradients is provided. Both mechanism-based and phenomenological strain gradient…