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Multiscale Instabilities in Active Elastomers

Multiscale Instabilities in Active Elastomers

Monday 16/12/2019
  • Artemii Goshkoderia
  • Work towards PhD degree under the supervision of Assistant Prof. Stephan Rudykh / University of Wisconsin – Madison
  • Classroom 165, ground floor, Library, Aerospace Eng.
  • Department of Aerospace Engineering
  • Technion – Israel Institute of Technology
  • The talk will be given in English

We study magnetomechanical instabilities in magnetoactive elastomer (MAE) composites undergoing finite strains in the presence of a magnetic field. In particular, we consider MAE composites with chain-like microstructure. We analyze the influence of the applied magnetic field along the chains on the stability of the MAE composites at both microscopic and macroscopic length scales. To this end, we develop a numerical scheme to detect the onset of instabilities at the long wave and finite length-scales. By applying the developed numerical technique, we analyze the influence of the materials microstructure geometrical parameters and applied magnetic field on the onset of instabilities in soft MAEs.

We found that identical MAE composites with periodically distributed particles can switch to a variety of new patterns with different periodicity under particular levels of the applied magnetic field. The post buckling analysis is performed to numerically realize the newly formed patterns dictated by the magnitude of the applied magnetic field.

Light refreshments will be served before the lecture
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