### Abstract

We consider composites made of hydrogenated nitrile butadiene rubber (HNBR) and particles of zirconium tungstate (ZrW2O8). We focus on finite element (FE) modelling of a finite-strain mechanical behaviour of the composite and validation of the numerical simulation against experiments. Based on examination of composite microstructure by scanning electron microscope and optical analysis of particle images, realistic representative volume elements (RVE) of microstructure are generated taking into consideration the particles circularity and size distributions. Then FE simulations are performed to study the influence of the microstructure and matrix-filler interface conditions on the mechanical properties of the composites. It is assumed that the mechanical behaviour of rubber is non-linear, while the tungstate particles are modelled by a linear elastic material. The FE simulations reproduce uniaxial compression tests. Two types of interface condition between matrix and particles are simulated: A perfect adhesion and absence of adhesion. Corresponding stress-strain curves are constructed. Comparison with experiments shows that the real stress-strain curves for pre-loaded samples path within intervals given by the modelling, i.e. pre-loading leads to partial damage of bonding between matrix and particles.

Original language | English |
---|---|

Pages (from-to) | 278-287 |

Number of pages | 10 |

Journal | Materials Physics and Mechanics |

Volume | 32 |

Issue number | 3 |

Publication status | Published - 2017 |

Externally published | Yes |

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### Scopus subject areas

- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering

### Cite this

*Materials Physics and Mechanics*,

*32*(3), 278-287.

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*Materials Physics and Mechanics*, vol. 32, no. 3, pp. 278-287.

**Elastomer composites based on filler with negative coefficient of thermal expansion : Experiments and numerical simulations of stress-strain behaviour.** / Shubin, S. N.; Akulichev, A. G.; Freidin, A. B.

Research output

TY - JOUR

T1 - Elastomer composites based on filler with negative coefficient of thermal expansion

T2 - Experiments and numerical simulations of stress-strain behaviour

AU - Shubin, S. N.

AU - Akulichev, A. G.

AU - Freidin, A. B.

PY - 2017

Y1 - 2017

N2 - We consider composites made of hydrogenated nitrile butadiene rubber (HNBR) and particles of zirconium tungstate (ZrW2O8). We focus on finite element (FE) modelling of a finite-strain mechanical behaviour of the composite and validation of the numerical simulation against experiments. Based on examination of composite microstructure by scanning electron microscope and optical analysis of particle images, realistic representative volume elements (RVE) of microstructure are generated taking into consideration the particles circularity and size distributions. Then FE simulations are performed to study the influence of the microstructure and matrix-filler interface conditions on the mechanical properties of the composites. It is assumed that the mechanical behaviour of rubber is non-linear, while the tungstate particles are modelled by a linear elastic material. The FE simulations reproduce uniaxial compression tests. Two types of interface condition between matrix and particles are simulated: A perfect adhesion and absence of adhesion. Corresponding stress-strain curves are constructed. Comparison with experiments shows that the real stress-strain curves for pre-loaded samples path within intervals given by the modelling, i.e. pre-loading leads to partial damage of bonding between matrix and particles.

AB - We consider composites made of hydrogenated nitrile butadiene rubber (HNBR) and particles of zirconium tungstate (ZrW2O8). We focus on finite element (FE) modelling of a finite-strain mechanical behaviour of the composite and validation of the numerical simulation against experiments. Based on examination of composite microstructure by scanning electron microscope and optical analysis of particle images, realistic representative volume elements (RVE) of microstructure are generated taking into consideration the particles circularity and size distributions. Then FE simulations are performed to study the influence of the microstructure and matrix-filler interface conditions on the mechanical properties of the composites. It is assumed that the mechanical behaviour of rubber is non-linear, while the tungstate particles are modelled by a linear elastic material. The FE simulations reproduce uniaxial compression tests. Two types of interface condition between matrix and particles are simulated: A perfect adhesion and absence of adhesion. Corresponding stress-strain curves are constructed. Comparison with experiments shows that the real stress-strain curves for pre-loaded samples path within intervals given by the modelling, i.e. pre-loading leads to partial damage of bonding between matrix and particles.

KW - Damage

KW - Debonding.

KW - Effective stress-strain curve

KW - Elastomer composite

KW - Representative volume element

UR - http://www.scopus.com/inward/record.url?scp=85039703874&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:85039703874

VL - 32

SP - 278

EP - 287

JO - ФИЗИКА И МЕХАНИКА МАТЕРИАЛОВ

JF - ФИЗИКА И МЕХАНИКА МАТЕРИАЛОВ

SN - 1605-8119

IS - 3

ER -