Associate Professor
Process & Energy Department
Faculty of Mechanical, Maritime, and Material Engineering
TU Delft
What we do: We model the deformation and flow of soft solids and
complex fluids, which include materials like foams, emulsions, suspensions, and granular media.
We are particularly interested in solids
that are barely rigid and flows that easily arrest.
Developing accurate and predictive models of these materials is
practically important because they appear in many natural and industrial settings.
They also raise fundamental questions about the origins of rigidity and the consequences of disorder.
Recent highlights:
- Julia,
Karsten,
and Dion
each presented their work at the 2017 APS
March Meeting.
- Nonlocal elasticity near
jamming.
Karsten's paper in Physical
Review Letters shows that marginal solids near
the jamming transition are actually nonlocal. In a "normal" (local) solid,
elasticity is described by a relation between stresses and strains. But
as a material approaches (un)jamming, there is an additional and
increasingly important contribution from gradients of the stress and/or
strain.
-
Beyond linear elasticity: Jammed solids at finite shear strain and rate.
Julia's recent article in Soft Matter clarifies when soft solids like foams and
emulsions obey Hooke's law, and when viscous and plastic dissipation
become important.
-
Mapping the jamming transition of bidisperse mixtures.
Dion and Daniel have fully mapped out the position of the jamming
transition in bidisperse mixtures. Surprising results include the presence
of not one but two local minima, and a region where adding small particles
can significantly stiffen a packing.
Disclaimer: If you found this page with a search
engine, you may be wondering whether I'm
the Brian Tighe
with all the knives. I'm not.
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Office: New P&E Building, Rm 250
Tel: +31 (0)15 27 81103
Email: b.p.tighe (at) tudelft.nl
Mail:
Delft University of Technology
Process & Energy Laboratory
Leeghwaterstraat 39
2628 CB Delft
The Netherlands
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