An algorithm for two-dimensional mesh generation for arbitrary regions with cracks

Miranda, Antonio Carlos; Neto, Joaquim Bento Cavalcante; Martha, Luiz Fernando

doi:10.1109/sibgra.1999.805605

Cited by 10 publications

(10 citation statements)

References 15 publications

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“…The efficiency and reliability of the presented mesh-generation algorithm has been attested in a previous work [7]. An example of crack propagation FE simulation in a model with a relatively complex geometry, using the presented algorithm, will be discussed in Section 6.…”

Section: Local Mesh Improvementmentioning

confidence: 87%

“…However, the other two methods also provide good results even for relatively coarse meshes (see Miranda et al [7] for details).…”

Section: Numerical Computation Of Stress-intensity Factorsmentioning

confidence: 99%

“…While it does not guarantee bounds on element-aspect ratios, care is taken at each step to generate the best possible shaped elements. Empirical observations show that the algorithm is largely successful in meeting this requirement [7].…”

Section: Finite-element Mesh Generationmentioning

confidence: 99%

“…The back-tracking procedure consists of deleting an element that is classified as poorly shaped and a group of elements in its vicinity. The classification of a ''bad'' triangle is based on a specified measure [7]. For each element of the generated mesh, this quality measure is evaluated.…”

Section: Local Mesh Improvementmentioning

confidence: 99%

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Fatigue life and crack path predictions in generic 2D structural components

Miranda

Meggiolaro

Castro

et al. 2003

Engineering Fracture Mechanics

Self Cite

128

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This paper proposes a reliable and cost-effective two-phase methodology to predict crack propagation life in generic two-dimensional (2D) structural components. First, the usually curved fatigue crack path and its stress-intensity factors are calculated at small crack increments in a specialized finite-element software, using automatic remeshing algorithms, special crack tip elements and appropriate crack increment criteria. Then, the computed stress-intensity factors are transferred to a powerful general-purpose fatigue-design program, which has been designed to predict both initiation and propagation fatigue lives by means of classical design methods. Particularly, its crack propagation module accepts any K I expression and any crack growth rate model, considering sequence effects such as overload-induced crack retardation to deal with 1D and 2D crack propagation under variable amplitude loading. Non-trivial application examples compare the numerical simulation results with those measured in physical experiments.

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Section: Local Mesh Improvementmentioning

confidence: 87%

“…However, the other two methods also provide good results even for relatively coarse meshes (see Miranda et al [7] for details).…”

Section: Numerical Computation Of Stress-intensity Factorsmentioning

confidence: 99%

Section: Finite-element Mesh Generationmentioning

confidence: 99%

Section: Local Mesh Improvementmentioning

confidence: 99%

See 2 more Smart Citations

Fatigue life and crack path predictions in generic 2D structural components

Miranda

Meggiolaro

Castro

et al. 2003

Engineering Fracture Mechanics

Self Cite

128

View full text Add to dashboard Cite

show abstract

“…This software use a finite element automatic mesh generation algorithm devised specifically for this software [12].…”

Section: Numerical Computation Of the Crack Increment Directionmentioning

confidence: 99%

Curved Fatigue Cracks Under Complex Loading

Miranda¹,

Martha²,

Meggiolaro³

et al. 2001

SAE Technical Paper Series

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A reliable and cost effective two-phase methodology is proposed to predict crack propagation life in generic twodimensional structural components under complex fatigue loading. First, the usually curved fatigue crack path and its stress intensity factors are calculated at small crack increments in a specialized finite element software, using automatic remeshing algorithms, special crack tip elements and appropriate crack increment criteria. Then, the calculated stress intensity factors are transferred to a powerful general purpose fatigue design software based in the local approach, which has been designed to predict both initiation and propagation fatigue lives by all classical design methods. In particular, its crack propagation module accepts any K I expression and any da/dN rule, considering sequence effects such as overload-induced crack retardation to deal with one and two-dimensional crack propagation under complex loading. Non-trivial application examples compare the numerical simulation results with those measured in physical experiments.

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