Dynamic Jamming in Concentrated Particle Suspensions
Abstract
The project is a systematic investigation of dynamic jamming phenomena in suspensions, focusing on fully three-dimensional (3D) systems in the non-Brownian regime. This investigation combines state-of-the-art experimental techniques, including high-speed imaging using video and several modalities of ultrasound. It breaks new ground by probing non-invasively the transient reconfigurations associated with dynamic jamming. The overall scientific aim of the research has been to provide a better fundamental understanding of dynamic jamming in concentrated particle suspensions, in order to enable the design of smart materials with adaptive stress response. Major goals of the project are to: 1. Provide detailed experimental data on 3D dynamic jamming phenomena under different modes of excitation. Currently only limited data of this type exists, primarily for normal impact. 2. Map out the state diagram for dynamic jamming. None of the models for steady-state shear thickening currently available in the literature can provide an appropriate framework, and neither can the original jamming phase diagram for frictionless particles. Our hypothesis is that shear jamming forms a good basis for such framework, but this remains to be investigated. 3. Develop suspensions with tailored frictional as well as liquid-mediated interactions to optimize dynamic jamming properties. 4. Apply dynamic jamming concepts to develop predictive capabilities for new types of smart suspensions that exhibit stress adaptive properties.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 30, 2021
- Accession Number
- AD1199863
Entities
People
- Abhinendra Singh
- Endao Han
- Heinrich Jaeger
- Ionnis Nikas
- Liang Zhao
- Margot Young
- Medha Goyal
- Michael van der Naald
- Nicole James
- Nigel Van Ha
- Xue Huayue
Organizations
- University of Chicago