A new approach to model delamination growth in fatigue using the Virtual Crack Closure Technique without re-meshing

Carvalho, N.V. De; Mabson, Gerald E.; Krueger, Ronald; Deobald, Lyle

doi:10.1016/j.engfracmech.2019.106614

Cited by 27 publications

(29 citation statements)

References 18 publications

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“…In the present study, following, 20,16,14 a progressive nodal release strategy is used to represent intermediate delamination front positions between node pairs, illustrated in Figure 1.…”

Section: Energy Release Rate Calculationmentioning

confidence: 99%

“…Applying the VCCT expressions proposed in 20 to the 2D case illustrated in Figure 1, the Mode I and Mode II ERR components for node i can be determined by…”

Section: Energy Release Rate Calculationmentioning

confidence: 99%

“…This is particularly relevant in fatigue, since the process zone size in fatigue, if accurately representing the physics of the fracture process, should decrease relative to the quasi-static process zone size, and thus require proportionally finer meshes when using cohesive element approaches, for example. 23,24 The strategy proposed in 20 provides an explicit calculation of the ERR and mode-mixity along the delamination front at each delamination growth increment resulting from the applied fatigue loading. In the present study, it is assumed that the ERR and mode-mixity can be used to infer the relative magnitude of the delamination growth increment resulting from quasi-static loading.…”

Section: Introductionmentioning

confidence: 99%

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An explicit delamination propagation algorithm to simulate delamination growth under quasi-static and fatigue loading without re-meshing using virtual crack closure technique and progressive nodal release

Carvalho

Ramnath

Mabson

et al. 2022

Journal of Composite Materials

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A modeling approach is proposed to simulate delamination propagation in composite laminates under both quasi-static and fatigue loading regimes. Delamination growth is simulated using the Virtual Crack Closure Technique combined with a progressive nodal release strategy. In the proposed approach, the delamination propagation increment is determined explicitly, based on the energy release rate calculated in the previous time increment. Explicitly determining the delamination propagation increment linearizes the system of equations that results from the progressive nodal release strategy and eliminates convergence issues associated with delamination growth. In fatigue, the delamination growth increment is calculated using as input growth rates characterized experimentally via fitting of a suitable form of the Paris law to the experimental data. Under quasi-static loading conditions, a sufficiently large pseudo-growth rate is assumed, such that the simulation results converge to the results obtained with the chosen binary (growth/no growth) fracture criterion. Since both fatigue and quasi-static loading regimes share the same underlying algorithm, simulating the transition between fatigue and quasi-static delamination growth is trivial. The approach is demonstrated to accurately simulate delamination growth for all cases assessed, including quasi-static mixed-mode loading and the transition between fatigue and quasi-static delamination growth regimes. Finally, it is also shown that the approach can simulate both self-similar and non-self-similar delamination growth.

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“…In the present study, following, 20,16,14 a progressive nodal release strategy is used to represent intermediate delamination front positions between node pairs, illustrated in Figure 1.…”

Section: Energy Release Rate Calculationmentioning

confidence: 99%

“…Applying the VCCT expressions proposed in 20 to the 2D case illustrated in Figure 1, the Mode I and Mode II ERR components for node i can be determined by…”

Section: Energy Release Rate Calculationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

An explicit delamination propagation algorithm to simulate delamination growth under quasi-static and fatigue loading without re-meshing using virtual crack closure technique and progressive nodal release

Carvalho

Ramnath

Mabson

et al. 2022

Journal of Composite Materials

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show abstract

“…Finally, recently, De Carvalho et al [101] have proposed a modelling approach to simulate delamination propagation in fatigue that combines VCCT with a progressive nodal release strategy. The progressive nodal release alleviates the artificial stress concentrations found when using the VCCT with instantaneous release to model 3D delamination without re-meshing.…”

Section: Virtual Crack Closure Technique (Vcct)mentioning

confidence: 99%

A review on failure theories and simulation models for adhesive joints

Τσερπές

Barroso-Caro

Carraro

et al. 2021

The Journal of Adhesion

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In the framework of the Cost Action CERTBOND (Reliable roadmap for certification of bonded primary structures), a wide group of researchers from 27 European Countries have had the opportunity to work on the topic of certification of bonded joints for primary structural applications from different engineering sectors such as the aerospace, automotive, civil engineering, wind energy and marine sectors. Since virtual testing and optimization are basic tools in the certification process, one of the key objectives of CERTBOND is to critically review some of the available models and failure theories for adhesive joints. The present paper summarizes the outcome of this task. Nine different models/theories are described in detail. Specifically, reviewed are the Classical Analytical Methods, the Process Zone Methods, Linear Elastic Fracture Mechanics (LEFM), the Virtual Crack Closure Technique (VCCT), the Stress Singularity Approach, Finite Fracture Mechanics (FFM), the Cohesive Zone Method (CZM), the Progressive Damage Modeling method and the Probabilistic methods. Also, at the end of the paper, the modeling of temperature effects on adhesive joints have been addressed. For each model/theory, information on the methodology, the required input, the main results, the advantages and disadvantages and the applications are given.

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“…One critical point of the fracture mechanics modelling methods presented in the literature is to determine the energy release rate (G) components, then a modified form of Paris law and G-N curves achieved by experimental measurements are employed for evaluating fatigue crack propagation and initiation, respectively. Two typical approaches to compute the G components are the virtual crack closure technique (VCCT) [2][3][4] and the level set method [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Composites fatigue delamination prediction using double load envelopes and twin cohesive models

Zhang

Kawashita

Hallett

2020

Composites Part A: Applied Science and Manufacturing

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A new approach to model delamination growth in fatigue using the Virtual Crack Closure Technique without re-meshing

Cited by 27 publications

References 18 publications

An explicit delamination propagation algorithm to simulate delamination growth under quasi-static and fatigue loading without re-meshing using virtual crack closure technique and progressive nodal release

An explicit delamination propagation algorithm to simulate delamination growth under quasi-static and fatigue loading without re-meshing using virtual crack closure technique and progressive nodal release

A review on failure theories and simulation models for adhesive joints

Composites fatigue delamination prediction using double load envelopes and twin cohesive models

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