Micromechanical modeling of non-linear stress-strain behavior of polycrystalline microcracked materials under tension

Bruno, Giovanni; Kachanov, Mark; Sevostianov, Igor; Shyam, Amit

doi:10.1016/j.actamat.2018.10.024

Title: Micromechanical modeling of non-linear stress-strain behavior of polycrystalline microcracked materials under tension

Abstract

The stress-strain behavior of microcracked polycrystalline materials (such as ceramics or rocks) under conditions of tensile, displacement-controlled, loading is discussed. Micromechanical explanation and modeling of the basic features, such as non-linearity and hysteresis in stress-strain curves, is developed, with stable microcrack propagation and “roughness” of intergranular cracks playing critical roles. Experiments involving complex loading histories were done on large- and medium grain size β-eucryptite ceramic. As a result, the model is shown to reproduce the basic features of the observed stress-strain curves.

Authors:

^[1]; Kachanov, Mark ^[2];

^[3];

^[4]

Bundesanstalt fur Materialforschung und -prufung, Berlin (Germany); Univ. of Potsdam, Potsdam (Germany)
Tufts Univ., Medford, MA (United States); R.E.Alexeev Nizhny Novgorod Technical Univ., Nizhny Novgorod (Russia)
New Mexico State Univ., Las Cruces, NM (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Publication Date:: Sat Oct 13 00:00:00 EDT 2018

Research Org.:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE Office of Energy Efficiency and Renewable Energy (EERE); USDOE Office of Fossil Energy and Carbon Management (FECM)

OSTI Identifier:: 1481704

Alternate Identifier(s):: OSTI ID: 1755446

Grant/Contract Number:: AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: Acta Materialia

Additional Journal Information:: Journal Volume: 164; Journal Issue: C; Journal ID: ISSN 1359-6454

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; Nonlinearity; Stress-strain relations; Hysteresis; Tension; Ceramics; Rocks; Polycrystals

Citation Formats


                    Bruno, Giovanni, Kachanov, Mark, Sevostianov, Igor, and Shyam, Amit. Micromechanical modeling of non-linear stress-strain behavior of polycrystalline microcracked materials under tension.  United States: N. p., 2018. 
Web.  doi:10.1016/j.actamat.2018.10.024.

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                    Bruno, Giovanni, Kachanov, Mark, Sevostianov, Igor, & Shyam, Amit. Micromechanical modeling of non-linear stress-strain behavior of polycrystalline microcracked materials under tension.  United States.  https://doi.org/10.1016/j.actamat.2018.10.024

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                    Bruno, Giovanni, Kachanov, Mark, Sevostianov, Igor, and Shyam, Amit. Sat .  
"Micromechanical modeling of non-linear stress-strain behavior of polycrystalline microcracked materials under tension".  United States.  https://doi.org/10.1016/j.actamat.2018.10.024.  https://www.osti.gov/servlets/purl/1481704.

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@article{osti_1481704,

  title        = {Micromechanical modeling of non-linear stress-strain behavior of polycrystalline microcracked materials under tension},

  author       = {Bruno, Giovanni and Kachanov, Mark and Sevostianov, Igor and Shyam, Amit},

  abstractNote = {The stress-strain behavior of microcracked polycrystalline materials (such as ceramics or rocks) under conditions of tensile, displacement-controlled, loading is discussed. Micromechanical explanation and modeling of the basic features, such as non-linearity and hysteresis in stress-strain curves, is developed, with stable microcrack propagation and “roughness” of intergranular cracks playing critical roles. Experiments involving complex loading histories were done on large- and medium grain size β-eucryptite ceramic. As a result, the model is shown to reproduce the basic features of the observed stress-strain curves.},

  doi          = {10.1016/j.actamat.2018.10.024},

  journal      = {Acta Materialia},

  number       = C,

  volume       = 164,

  place        = {United States},

  year         = {Sat Oct 13 00:00:00 EDT 2018},

  month        = {Sat Oct 13 00:00:00 EDT 2018}

}

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https://doi.org/10.1016/j.actamat.2018.10.024

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Cited by: 13 works

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Figures / Tables:

Figure 1: Typical microstructures of brittle microcracked polycrustalline materials: (a) aluminum titanite; (b) β-eucryptite; (c) cordierite; (d) silesian granite (from [31]). Arrows (1) indicate locations of cracks following grain boundaries; arrows (2) point to roughness of crack faces.

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