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Viscoelastic behavior at high volume fraction of magnetorheological suspensions in the presence of discontinuous shear thickening

  • Olga Volkova
  • Yan Grasselli
  • Georges Bossis
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Abstract

This paper presents a study of the viscoelastic behavior of suspensions of carbonyl iron particles coated with a superplastifier molecule and dispersed in ethylene glycol. The experiments were done in plate-plate configuration with the rheometer MCR502 of Anton Paar. The discontinuous shear thickening (DST) transition manifests by a large jump of the storage and loss modulus. For low magnetic fields ( H <___50___kA/m) the increase of moduli is at least of two orders of magnitude compared to the one induced by the magnetic field in the absence of DST. The behavior of the critical strain and the critical stress where the transition happens are presented for different frequencies and fields and a qualitative interpretation of the observed behavior is presented.

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Cite

BibTeXRIS
BibTeX
@misc{volkova2026viscoelastic,
  title = {{Viscoelastic behavior at high volume fraction of magnetorheological suspensions in the presence of discontinuous shear thickening}},
  author = {Olga Volkova and Yan Grasselli and Georges Bossis},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.41526},
  eprint = {2610.41526},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.41526},
}
RIS
TY  - UNPB
TI  - Viscoelastic behavior at high volume fraction of magnetorheological suspensions in the presence of discontinuous shear thickening
AU  - Olga Volkova
AU  - Yan Grasselli
AU  - Georges Bossis
PY  - 2026
DA  - 2026/10/30
PB  - arXiv
DO  - 10.48550/arxiv.2610.41526
UR  - https://arxiv.org/abs/2610.41526
AB  - This paper presents a study of the viscoelastic behavior of suspensions of carbonyl iron particles coated with a superplastifier molecule and dispersed in ethylene glycol. The experiments were done in plate-plate configuration with the rheometer MCR502 of Anton Paar. The discontinuous shear thickening (DST) transition manifests by a large jump of the storage and loss modulus. For low magnetic fields ( H <___50___kA/m) the increase of moduli is at least of two orders of magnitude compared to the one induced by the magnetic field in the absence of DST. The behavior of the critical strain and the critical stress where the transition happens are presented for different frequencies and fields and a qualitative interpretation of the observed behavior is presented.
ER  -