A phase field approach enhanced with a cohesive zone model for modeling delamination induced by matrix cracking

Quintanas-Corominas, A.; Turón, A.; Reinoso, J.; Casoni, Eva; Paggi, Marco; Mayugo, J.A.

doi:10.1016/j.cma.2019.112618

Cited by 69 publications

(24 citation statements)

References 76 publications

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“…Reinoso et al [66] and Guillén-Hernández et al [67] combined phase field and cohesive zone models to investigate failure initiation at composite micro-scales. Significant efforts have been made to model the interaction between intra-laminar and inter-laminar failures in composites by coupling the brittle phase-field model and cohesive zone method in a physically consistent manner, see e.g., [68,69,70]. Recently, Quintanas-Corominas et al [14] developed a novel and robust strategy to simulate intra-laminar and trans-laminar brittle fracture in long-fibre composites by incorporating anisotropy in both the elastic and fracture properties.…”

Section: Introductionmentioning

confidence: 99%

An anisotropic cohesive phase field model for quasi-brittle fractures in thin fibre-reinforced composites

Pillai

Triantafyllou

Essa

et al. 2020

Composite Structures

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Thin unidirectional-tape and woven-fabric composites are widely utilized in the aerospace and automotive industries due to their enhanced fatigue life and damage resistance. Providing high-fidelity simulations of intra-laminar damage in such laminates is a challenging task both from a physics and a computational standpoint, due to their complex and largely quasi-brittle fracture response. This is manifested by matrix cracking and fibre breakage, which result in a sudden loss of strength with minimum crack openings; subsequent fibre pull-outs result in a further, although gradual, strength loss. To effectively model this response, it is necessary to account for the cohesive forces evolving within the fracture process zone. Furthermore, the interaction of the failure mechanisms pertinent to both the fibres and the matrix necessitate the definition of anisotropic damage models.We propose a cohesive phase-field model to simulate intra-laminar fracture in fibre reinforced composites. To capture damage anisotropy, distinct energetic crack driving forces are defined for each pertinent composite damage mode together with a structural tensor that accounts for material orientation dependent fracture properties. The material degradation is governed by a 3-parameter quasi-quadratic degradation function, which can be calibrated to experimentally derived strain softening curves. The proposed damage model is implemented in Abaqus and is validated against experimental results.

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Section: Introductionmentioning

confidence: 99%

An anisotropic cohesive phase field model for quasi-brittle fractures in thin fibre-reinforced composites

Pillai

Triantafyllou

Essa

et al. 2020

Composite Structures

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“…Our formulation is grounded on the phase field fracture method, which has gained notable traction in recent years. Applications include battery materials [32,33], composites [34,35], ceramics [36,37], shape memory alloys [38], functionally graded materials [39,40] and both ductile [41,42] and embrittled [43] metals. The success of phase field fracture methods is arguably twofold.…”

Section: A Phase Field Theory For Hydrogen-assisted Fatiguementioning

confidence: 99%

A phase field model for hydrogen-assisted fatigue

Golahmar¹,

Kristensen²,

Niordson³

et al. 2021

Preprint

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We present a new theoretical and numerical phase field-based formulation for predicting hydrogenassisted fatigue. The coupled deformation-diffusion-damage model presented enables predicting fatigue crack nucleation and growth for arbitrary loading patterns and specimen geometries.The role of hydrogen in increasing fatigue crack growth rates and decreasing the number of cycles to failure is investigated. Our numerical experiments enable mapping the three loading frequency regimes and naturally recover Paris law behaviour for various hydrogen concentrations. In addition, Virtual S-N curves are obtained for both notched and smooth samples, exhibiting a good agreement with experiments.

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“…This phase field approximation circumvents the need to track discrete crack surfaces, enabling the modelling of complex fracture phenomena (see, e.g., McAuliffe and Waisman, 2015;Hirshikesh et al, 2019;Quintanas-Corominas et al, 2020).…”

Section: Hydrogen-sensitive Phase Field Damagementioning

confidence: 99%

A mechanism-based multi-trap phase field model for hydrogen assisted fracture

Isfandbod,

Martínez-Pañeda

2021

Preprint

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We present a new mechanistic, phase field-based formulation for predicting hydrogen embrittlement. The multi-physics model developed incorporates, for the first time, a Taylor-based dislocation model to resolve the mechanics of crack tip deformation. This enables capturing the role of dislocation hardening mechanisms in elevating the tensile stress, hydrogen concentration and dislocation trap density within tens of microns ahead of the crack tip. The constitutive strain gradient plasticity model employed is coupled to a phase field formulation, to simulate the fracture process, and to a multi-trap hydrogen transport model. The analysis of stationary and propagating cracks reveals that the modelling framework presented is capable of adequately capturing the sensitivity to the hydrogen concentration, the loading rate, the material strength and the plastic length scale. In addition, model predictions are compared to experimental data of notch tensile strength versus hydrogen content on a high-strength steel; a very good agreement is attained. We define and implement both atomistic-based and phenomenological hydrogen

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A phase field approach enhanced with a cohesive zone model for modeling delamination induced by matrix cracking

Cited by 69 publications

References 76 publications

An anisotropic cohesive phase field model for quasi-brittle fractures in thin fibre-reinforced composites

An anisotropic cohesive phase field model for quasi-brittle fractures in thin fibre-reinforced composites

A phase field model for hydrogen-assisted fatigue

A mechanism-based multi-trap phase field model for hydrogen assisted fracture

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