Monday, March 26, 2018 - 10:50am - 11:20am
Jacco Snoeijer (Universiteit Twente)
Droplets on highly deformable, elastic surfaces exhibit unusual wetting behaviour. The deformability of the substrate alters the contact angle with respect to Young’s law, while spreading dynamics is fundamentally different from that on rigid surfaces. Here we report recent experimental and theoretical progress, and highlight some of the salient features of the solid’s surface tension.
Sunday, March 6, 2011 - 1:30pm - 3:00pm
Joseph Teran (University of California, Los Angeles)
Sunday, March 6, 2011 - 10:30am - 12:00pm
Joseph Teran (University of California, Los Angeles)
Elasticity plays a fundamental role in many biomechanics and computer
graphics related problems. I will talk about numerical methods used
for simulating elastic phenomena in soft tissues, skeletal muscles as
well as techniques inspired by imaging for determining elastic
constitutive models. Specifically, I will discuss common difficulties
encountered and my recent algorithm developments to address them. I
will put specific emphasis on applications in computer graphics based
Tuesday, July 22, 2008 - 2:45pm - 2:55pm
Evan Hohlfeld (University of California, Berkeley)
For general non-linear elliptic PDEs, e.g. non-linear rubber
elasticity, linear stability analysis is false. This is because of the
possibility of point-instabilities. A point-instability is a non-linear
instability with zero amplitude threshold that occurs while linear
stability still holds. Examples include cavitation, fracture, and the formation
of a crease, a self-contacting fold in an otherwise free surface.
Each of which represents a kind of topological change. For any such
Tuesday, July 22, 2008 - 2:15pm - 2:25pm
Scott Spector (Southern Illinois University)
Experiments on elastomers have shown that triaxial tensions can
induce a material to exhibit holes that were not previously evident.
Analytic work in nonlinear elasticity has established that such
cavity formation may indeed be an elastic phenomenon: sufficiently
large prescribed boundary deformations yield a hole-creating
deformation as the energy minimizer whenever the elastic energy is of slow

In this lecture the speaker will discuss the use of
Tuesday, July 22, 2008 - 9:00am - 9:50am
Jey Sivaloganathan (University of Bath)
We present an overview of a variational approach to modelling
fracture initiation in the framework of nonlinear elasticity.
The underlying principle is that energy minimizing deformations
of an elastic body may develop singularities when the body is
subjected to large boundary displacements or loads. These singularities often
bear a striking resemblance to fracture mechanisms observed in polymers.

Experiments indicate that voids may form in polymer samples
(that appear macroscopically perfect) when the samples are
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