Micromechanics, macromechanics and constitutive modeling of the elasto-viscoplastic deformation of rubber-toughened glassy polymers

Danielsson, Mats; Parks, David M.; Boyce, Mary C.

doi:10.1016/j.jmps.2006.08.006

Cited by 59 publications

(35 citation statements)

References 50 publications

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“…Similar to the current study, Zhou et al [29] and Wang et al [30] have used Voronoi tessellations to investigate crack propagation in ceramic tool materials. Voronoi tessellations have also been used to investigate plasticity by modelling elasto-viscoplastic deformation of rubber-toughened glassy polymers [31].…”

Section: Nygårds and Gudmundsonmentioning

confidence: 99%

Analysis of two-phase ceramic composites using micromechanical models

Alveen

McNamara

Carolan

et al. 2014

Computational Materials Science

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Micromechanical models of two-phase ceramic composites are created using a modified Voronoi tessellation approach. These representative Finite Volume (FV) microstructures are used to investigate the role of microstructure on fracture of advanced ceramics. An arbitrary crack propagation model using a cell-centred finite volume based method is implemented. In particular the effect of matrix content is examined. It is shown that the underlying microstructure significantly affects the local stress and strain distributions for a two-phase ceramic containing hard particles in a softer matrix. Simulation results indicate that an increase in the volume fraction of these hard grains leads to an increase in strength of the composite material. Furthermore, it is found that the homogeneity of the microstructure affects the overall strength.

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Section: Nygårds and Gudmundsonmentioning

confidence: 99%

Analysis of two-phase ceramic composites using micromechanical models

Alveen

McNamara

Carolan

et al. 2014

Computational Materials Science

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“…As mentioned before, the experimental de- e.g. [9], [41], when subjected to macroscopic uniaxial tension, predict overall volume strains of 7 only a few percent of the axial strain and hence deviate much more from the experimental data 8 in Fig. 7b.…”

mentioning

confidence: 69%

“…[2], [3], [5], [6], [22], [37], indicate that the inelastic deformation 8 of rubber-toughened polymers such as ABS under tensile loading to a large extent proceeds 9 by the formation of multiple crazes in the ligament between the rubber particles. The crazes 10 initiate from the rubber particles (stress concentrators) and, under continued loading, they 11 collectively grow into mesoscopic band-like damage zones distributed throughout the material, A macroscopic material point is taken to correspond to a representative volume element…”

Section: Homogenized Model For Distributed Crazingmentioning

confidence: 99%

Continuum-micromechanical modeling of distributed crazing in rubber-toughened polymers

Helbig

Giessen²,

Clausen

et al. 2016

European Journal of Mechanics - A/Solids

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9A micromechanics based constitutive model is developed that focuses on the effect 10 of distributed crazing in the overall inelastic deformation behavior of rubber-toughened 11 ABS (acrylonitrile-butadiene-styrene) materials. While ABS is known to exhibit craz-12 ing and shear yielding as inelastic deformation mechanisms, the present work is meant 13 to complement earlier studies where solely shear yielding was considered. In order to 14 analyse the role of either mechanism separately, we here look at the other extreme and 15 assume that the formation and growth of multiple crazes in the glassy matrix between 16 dispersed rubber particles is the major source of overall inelastic strain. This notion is 17 cast into a homogenized material model that explicitly accounts for the specific (cohesive

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“…However, this modeling method also allows for more complex representations when appropriate. 52 Such models can be used to gain understanding of cell-level biomechanical experiments, just as SMD lends insight into single-molecule experiments. For example, FEM has been used to understand cell deformation during magnetic bead twisting experiments, 53 and to simulate deformation of a red blood cell with optical tweezers.…”

confidence: 99%

Modeling and simulation of chemomechanics at the cell-matrix interface

Krishnan

Oommen

Walton

et al. 2008

Cell Adhesion & Migration

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Chemomechanical characteristics of the extracellular materials with which cells interact can have a profound impact on cell adhesion and migration. To understand and modulate such complex multiscale processes, a detailed understanding of the feedback between a cell and the adjacent microenvironment is crucial. Here, we use computational modeling and simulation to examine the cell-matrix interaction at both the molecular and continuum lengthscales. Using steered molecular dynamics, we consider how extracellular matrix (ECM) stiffness and extracellular pH influence the interaction between cell surface adhesion receptors and extracellular matrix ligands, and we predict potential consequences for focal adhesion formation and dissolution. Using continuum level finite element simulations and analytical methods to model cell-induced ECM deformation as a function of ECM stiffness and thickness, we consider the implications toward design of synthetic substrata for cell biology experiments that intend to decouple chemical and mechanical cues.

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Micromechanics, macromechanics and constitutive modeling of the elasto-viscoplastic deformation of rubber-toughened glassy polymers

Cited by 59 publications

References 50 publications

Analysis of two-phase ceramic composites using micromechanical models

Analysis of two-phase ceramic composites using micromechanical models

Continuum-micromechanical modeling of distributed crazing in rubber-toughened polymers

Modeling and simulation of chemomechanics at the cell-matrix interface

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