Fracture toughness of foams with tetrakaidecahedral unit cells using finite element based micromechanics

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“…(Thiyagasundaram et al, 2011). The variation of fracture toughness with relative density is investigated for different types of periodic cells.…”

Section: Micromechanical Models For Predicting Fracture Toughnessmentioning

confidence: 99%

Failure and Damage Analysis of Advanced Materials

Altenbach¹,

Sadowski²

2015

CISM International Centre for Mechanical Sciences

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“…Consequently, the number of degrees of freedom in a repetitive module is small and consideration of a sufficiently large domain for the fracture toughness evaluation based on the K-field approach is not troublesome (Fleck & Qiu, 2007;Thiyagasundaram, Wang, Sankar, & Arakere, 2011). For denser voided materials when the beam model becomes invalid the direct modeling of a large domain is impractical due to the large number of degrees of freedom and, therefore, the K-field approach was not applied.…”

Section: Introductionmentioning

confidence: 99%

Employing of the discrete Fourier transform for evaluation of crack-tip field in periodic materials

Ryvkin

Hadar

2015

International Journal of Engineering Science

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“…It is widely used for studies of overall mechanical behaviour and failure of actual disordered foam materials. In particular, a compressive response of a low-density open-cell Kelvin foam was investigated by Gong and Kyriakides (2005) and by Laroussi et al (2002), and the fracture toughness for a specific crack orientation was determined by Thiyagasundaram et al (2011). Cellular materials with spatially periodic microstructure are characterized by anisotropic brittle fracture behaviour and by existence of a fixed number of possible flaw propagation planes.…”

Section: Introductionmentioning

confidence: 99%

Flaw Nucleation In A Brittle Open-Cell Kelvin Foam

Kucherov

Ryvkin

2012

Int J Fract

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Open-cell Kelvin foam is considered as a spatial lattice consisting of brittle elastic struts rigidly connected to each other at the nodal points. The lattice is subjected to remote uniaxial tensile loading, an initial imperfection is introduced and sequential break of the struts is observed. Different loading directions and material densities are examined and it is found that the broken struts form a plane flaw, which may be either a bridged or usual crack. The possible crack propagation planes to be used in the fracture toughness analysis are determined.

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Fracture toughness of foams with tetrakaidecahedral unit cells using finite element based micromechanics

Cited by 37 publications

References 20 publications

Failure and Damage Analysis of Advanced Materials

Failure and Damage Analysis of Advanced Materials

Employing of the discrete Fourier transform for evaluation of crack-tip field in periodic materials

Flaw Nucleation In A Brittle Open-Cell Kelvin Foam

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