Since the eruption began in 1995, Soufrière Hills volcano on Montserrat has been characterised by five phases of magma extrusion and corresponding pauses. Despite a lack eruptive surface activity since 2010, continues to show signs unrest form ongoing outgassing, inflation entire island Montserrat. Using numerical modelling, we compare set contrasting deformation models an attempt understand cu...

Multimaterial 3D printing using microfluidic printheads specifically designed for seamless switching between two visco-elastic materials "on-the-fly" during fabrication is demonstrated. This approach opens new avenues for the digital assembly of functional matter with controlled compositional and property gradients at the microscale.

A new space semi-discretization for the dynamic Signorini problem, based on a modification of the mass term, has been recently proposed. We prove the convergence of the space semi-discrete solutions to a solution of the continuous problem in the case of a visco-elastic material.

We investigate some critical models for visco-elastic flows of Oldroyd-B type in dimension two. We use a transformation which exploits the Oldroyd-B structure to prove an L∞ bound on the vorticity which allows us to prove global regularity for our systems.

This work is concerned with the prediction of elasto-acoustic properties polydisperse solid foam structures. A highly sample first characterized using microtomography and scanning electron microscopy. Relevant geometrical are then determined by image processing utilized to model partially closed cell system random Laguerre tessellations. The macroscopic visco-thermal transport foams next calcul...

In shear wave elastography, rotational speeds are converted to elasticity measures using elastodynamic theory. The method has a wide range of applications and is the gold standard for non-invasive liver fibrosis detection. However, observed dispersion in vivo human shows mismatch with purely elastic visco-elastic propagation laboratory phantom experiment we demonstrate that porosity fluid visco...

Most earlier thixotropic elasto-visco-plastic models follow the quasi-static pre-yielding linear elastic assumption of Oldroyd's 1946 model. To develop a new model, present work considers more realistic non-linear visco-elastic and plastic deformation. Our model is valid for reversible (finite time scale) irreversible (infinite materials. Despite being simple algebraic equation, our appropriate...

A new space semi-discretization for the dynamic Signorini problem, based on a modification of the mass term, has been recently proposed. We prove the convergence of the space semi-discrete solutions to a solution of the continuous problem in the case of a visco-elastic material.

We address the global persistence of analyticity and Gevrey-class regularity of solutions to the two and three-dimensional visco-elastic second-grade fluid equations. We obtain an explicit novel lower bound on the radius of analyticity of the solutions to the second-grade fluid equations that does not vanish as t → ∞. Applications to the damped Euler equations are given.

Robotic grasps exhibiting visco-elastic contact interactions with the manipulated object are considered. Control of internal forces is investigated. The presence of nonnegligible compliance at contacts, implies that the object dynamics cannot be neglected when attempting to control internal forces without affecting the object position. A dynamic internal force control is proposed. It is decoupl...