A micromechanical framework and modified self-consistent homogenization scheme for the thermoelasticity of porous bonded-particle assemblies

Bennett, K. C.; Luscher, D. J.; Buechler, M. A.; Yeager, J. D.

doi:10.1016/j.ijsolstr.2018.02.001

Title: A micromechanical framework and modified self-consistent homogenization scheme for the thermoelasticity of porous bonded-particle assemblies

Abstract

Thermoelasticity of porous bonded-particle assemblies is modeled within a micromechanical framework that considers damage at the inter-particle interfaces. Connections between void space and interface damage are developed and incorporated into a modified self-consistent homogenization (M-SCH) scheme that includes a contribution to the mean strain field from local displacement discontinuities over interfacial void spaces. The M-SCH scheme is developed for particles of a general ellipsoidal shape with anisotropic elastic and thermal expansion properties. Two types of porosity are distinguished: (1) dispersed inter-particle porosity and (2) isolated porosity. A means of separating out the relative contributions of each type of porosity to the homogenization scheme is provided, and an explicit expression is obtained for an effective damaged interphase thickness as a function of the dispersed porosity and the particle morphology. Numerical examples are provided for quartz bonded-particle assemblies in order to examine the influence of the porosity type on the predicted elastic moduli. The model is also calibrated to the neutron diffraction measurements provided by Yeager et al. (2016) of triclinic TATB crystal lattice orientation (texture) and lattice strain induced under thermal loading. The model simulations of lattice strain are compared with the measurements, and the predicted statistical distributions of inter-particle displacementmore »« less

Authors:

Bennett, K. C.;

; Buechler, M. A.; Yeager, J. D.

Publication Date:: Tue May 01 00:00:00 EDT 2018

Research Org.:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1619330

Alternate Identifier(s):: OSTI ID: 1463540; OSTI ID: 1548777

Report Number(s):: LA-UR-17-22811
Journal ID: ISSN 0020-7683; S0020768318300477; PII: S0020768318300477

Grant/Contract Number:: AC52-06NA25396

Resource Type:: Published Article

Journal Name:: International Journal of Solids and Structures

Additional Journal Information:: Journal Name: International Journal of Solids and Structures Journal Volume: 139-140 Journal Issue: C; Journal ID: ISSN 0020-7683

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE

Citation Formats


                    Bennett, K. C., Luscher, D. J., Buechler, M. A., and Yeager, J. D. A micromechanical framework and modified self-consistent homogenization scheme for the thermoelasticity of porous bonded-particle assemblies.  United States: N. p., 2018. 
Web.  doi:10.1016/j.ijsolstr.2018.02.001.

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                    Bennett, K. C., Luscher, D. J., Buechler, M. A., & Yeager, J. D. A micromechanical framework and modified self-consistent homogenization scheme for the thermoelasticity of porous bonded-particle assemblies.  United States.  https://doi.org/10.1016/j.ijsolstr.2018.02.001

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                    Bennett, K. C., Luscher, D. J., Buechler, M. A., and Yeager, J. D. Tue .  
"A micromechanical framework and modified self-consistent homogenization scheme for the thermoelasticity of porous bonded-particle assemblies".  United States.  https://doi.org/10.1016/j.ijsolstr.2018.02.001.

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@article{osti_1619330,

  title        = {A micromechanical framework and modified self-consistent homogenization scheme for the thermoelasticity of porous bonded-particle assemblies},

  author       = {Bennett, K. C. and Luscher, D. J. and Buechler, M. A. and Yeager, J. D.},

  abstractNote = {Thermoelasticity of porous bonded-particle assemblies is modeled within a micromechanical framework that considers damage at the inter-particle interfaces. Connections between void space and interface damage are developed and incorporated into a modified self-consistent homogenization (M-SCH) scheme that includes a contribution to the mean strain field from local displacement discontinuities over interfacial void spaces. The M-SCH scheme is developed for particles of a general ellipsoidal shape with anisotropic elastic and thermal expansion properties. Two types of porosity are distinguished: (1) dispersed inter-particle porosity and (2) isolated porosity. A means of separating out the relative contributions of each type of porosity to the homogenization scheme is provided, and an explicit expression is obtained for an effective damaged interphase thickness as a function of the dispersed porosity and the particle morphology. Numerical examples are provided for quartz bonded-particle assemblies in order to examine the influence of the porosity type on the predicted elastic moduli. The model is also calibrated to the neutron diffraction measurements provided by Yeager et al. (2016) of triclinic TATB crystal lattice orientation (texture) and lattice strain induced under thermal loading. The model simulations of lattice strain are compared with the measurements, and the predicted statistical distributions of inter-particle displacement discontinuities and contact tractions within the assembly are examined.},

  doi          = {10.1016/j.ijsolstr.2018.02.001},

  journal      = {International Journal of Solids and Structures},

  number       = C,

  volume       = 139-140,

  place        = {United States},

  year         = {Tue May 01 00:00:00 EDT 2018},

  month        = {Tue May 01 00:00:00 EDT 2018}

}

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https://doi.org/10.1016/j.ijsolstr.2018.02.001

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Cited by: 17 works

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Figures / Tables:

Fig. 1: Slice through theoretical RVE showing difference between isolated and dispersed porosity, as well as example interphase around a particle attributed to local porosity (dashed line).

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Works referencing / citing this record:

Effective Thermoelasticity of Polymer-Bonded Particle Composites with Imperfect Interfaces and Thermally Expansive Interphases
journal, September 2018

Bennett, Kane C.; Luscher, Darby J.
Journal of Elasticity, Vol. 136, Issue 1
DOI: 10.1007/s10659-018-9688-z

An energy approach to Modified Cam-Clay plasticity and damage modeling of cohesive soils
journal, November 2019

Bennett, Kane C.
Acta Geotechnica, Vol. 15, Issue 1
DOI: 10.1007/s11440-019-00880-0

Dilation angle in bonded particle simulation of rock
journal, September 2018

Fakhimi, A.; Norouzi, S.
Computational Particle Mechanics, Vol. 6, Issue 2
DOI: 10.1007/s40571-018-0208-5

Figures / Tables found in this record:

Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.

Similar Records in DOE PAGES and OSTI.GOV collections:

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A micromechanical model for the thermoelasticity of polymer-bonded composites is presented. The model is particularly aimed at describing materials where the polymeric binder phase undergoes non-negligible thermal expansion affecting the overall thermoelastic response. Constitutive choices for modeling a mixed binder-void interphase layer are proposed, and an associated decomposition of total eigenstrains into classical, elastic imperfection (damage), and binder thermal expansivity parts is examined within the context of imperfect inter-particle interfaces. A novel temperature dependent modified Eshelby tensor is identified, making possible the development of a temperature dependent modified self-consistent homogenization scheme—what we call the M θ-SCH model. A method formore »« less
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Similar Records

Title: A micromechanical framework and modified self-consistent homogenization scheme for the thermoelasticity of porous bonded-particle assemblies

Abstract

Citation Formats

Figures / Tables:

Effective Thermoelasticity of Polymer-Bonded Particle Composites with Imperfect Interfaces and Thermally Expansive Interphases journal, September 2018

An energy approach to Modified Cam-Clay plasticity and damage modeling of cohesive soils journal, November 2019

Dilation angle in bonded particle simulation of rock journal, September 2018

Effective Thermoelasticity of Polymer-Bonded Particle Composites with Imperfect Interfaces and Thermally Expansive Interphases
journal, September 2018

An energy approach to Modified Cam-Clay plasticity and damage modeling of cohesive soils
journal, November 2019

Dilation angle in bonded particle simulation of rock
journal, September 2018