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Poynting effect of brain matter in torsion
(Royal Society of Chemistry, 2019-06-13)
We investigate experimentally and model theoretically the mechanical behaviour of brain matter in torsion. Using a strain-controlled rheometer, we perform torsion tests on fresh porcine brain samples. We quantify the torque ...
Influence of initial residual stress on growth and pattern creation for a layered aorta
(Nature Research, 2019-06-03)
Residual stress is ubiquitous and indispensable in most biological and artificial materials, where it sustains and optimizes many biological and functional mechanisms. The theory of volume growth, starting from a stress-free ...
Multi-sector approximation method for arteries: the residual stresses of circumferential rings with non-trivial openings
(The Royal Society, 2019-07-24)
The opening angle method is a popular choice in biomechanics to estimate residual stresses in arteries. Experimentally, it means that an artery is cut into rings; then the rings are cut axially or radially allowing them ...
Prescribing patterns in growing tubular soft matter by initial residual stress
(Royal Society of Chemistry, 2019-10-02)
Initial residual stress is omnipresent in biological tissues and soft matter, and can affect growth-induced pattern selection significantly. Here we demonstrate this effect experimentally by letting soft tubes grow in the ...
Rivlin's legacy in continuum mechanics and applied mathematics
(The Royal Society, 2019-03-18)
Over a long and distinguished career, Ronald Rivlin (figure 1) published more than 200 scientific papers. He was a highly innovative scientist who made seminal contributions in all areas of continuum mechanics. He was one ...
Tuning the pull-in instability of soft dielectric elastomers through loading protocols
(Elsevier, 2019-03-22)
Pull-in (or electro-mechanical) instability occurs when a drastic decrease in the thickness of a dielectric elastomer results in electrical breakdown, which limits the applications of dielectric devices. Here we derive the ...
Generalization of the Zabolotskaya equation to all incompressible isotropic elastic solids
(The Royal Society, 2019-07-03)
We study elastic shear waves of small but finite amplitude, composed of an anti-plane shear motion and a general in-plane motion. We use a multiple scales expansion to derive an asymptotic system of coupled nonlinear ...
Simulation of quantum circuits by low-rank stabilizer decompositions
(Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften, 2019-09-02)
Recent work has explored using the stabilizer formalism to classically simulate quantum circuits containing a few non-Clifford gates. The computational cost of such methods is directly related to the notion of
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Pattern evolution in bending dielectric-elastomeric bilayers
(Elsevier, 2019-07-24)
We propose theoretical and numerical analyses of smart bending deformation of a dielectric-elastic bilayer in response to a voltage, based on the nonlinear theory of electro-elasticity and the associated linearized incremental ...
On the invariants of the cohomology of complements of Coxeter arrangements
(Elsevier, 2019-05-24)
We refine Brieskorn's study of the cohomology of the complement of the reflection arrangement of a finite Coxeter group W. As a result we complete the verification of a conjecture by Felder and Veselov that gives an explicit ...