Paper Number
GR15                         My Program 

Session
Gallery of Rheology Contest

Title
Rock and “roll” of friction in microstructural description of shear jamming in dense suspensions

Presentation Date and Time
October 16, 2024 (Wednesday) 6:30

Track / Room
Gallery of Rheology / Waterloo 3 & 4

Authors (Click on name to view author profile)

  1. Sharma, Shweta (Case Western Reserve University, Macromolecular Science and Engineering)
  2. Sharma, Abhishek (University of Chicago, Pritzker School of Molecular Engineering)
  3. Singh, Abhinendra (Case Western Reserve University, Macromolecular Science and Engineering)

Author and Affiliation Lines (in printed abstract book)
Shweta Sharma1, Abhishek Sharma2 and Abhinendra Singh1
1Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, OH 44106; 2Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL

Speaker / Presenter 
Sharma, Shweta

Keywords
computational methods; colloids; dense systems; networks; particles; suspensions

Text of Abstract
Dense suspensions are integral to numerous industrial processes, displaying intricate behaviors due to the complex interplay of particle interactions under shear forces. We study the phenomenon of shear jamming, where the suspension transitions from a fluid-like to a solid-like state under applied stress. Our research visualizes the transformative effect of adding rolling friction to systems that previously only considered sliding friction, showcasing its impact on the microstructure of dense suspensions. The image highlights how rolling friction captures the asperities of particles used in dense suspensions in industries and leading to a more accurate prediction of shear jamming. By comparing systems with and without rolling friction, our visualization emphasizes the critical role of different frictional constraints in shaping the mechanical behavior of suspensions, providing a clearer understanding of their complex rheological properties. This work underscores the importance of considering both sliding and rolling friction in predicting and controlling the behavior of dense suspensions in various industrial applications.