Publications related to Design of a Flexure-Based Flywheel for the Storage of Angular Momentum and Kinetic Energy

Wave-momentum shaping for moving objects in heterogeneous and dynamic media

Romain Christophe Rémy Fleury, Matthieu Francis Malléjac, Bakhtiyar Orazbayev, Stefan Rotter

Light and sound waves can move objects through the transfer of linear or angular momentum, which has led to the development of optical and acoustic tweezers, with applications ranging from biomedical engineering to quantum optics. Although impressive manip ...

2024

Digital-Image-Correlation for Simulating Cyclic Local Buckling in Steel Beams

Dimitrios Lignos, Albano António De Abreu E Presa De Castro E Sousa, Selimcan Ozden

Nonlinear continuum finite element (CFE) analyses rely on accurate multiaxial constitutive law formulations along with reliable imperfection patterns for simulating nonlinear geometric instabilities in steel members under mechanical loading. Validations of ...

Wiley2023

Pseudomomentum: origins and consequences

Harmeet Singh

The balance of pseudomomentum is discussed and applied to simple elasticity, ideal fluids, and the mechanics of inextensible rods and sheets. A general framework is presented in which the simultaneous variation of an action with respect to position, time, ...

2021

Shapes of rotating normal fluid He-3 versus superfluid He-4 droplets in molecular beams

Christoph Bostedt, Andre Al Haddad

Previous single-pulse extreme ultraviolet and x-ray coherent diffraction studies revealed that superfluid He-4 droplets obtained in a free jet expansion acquire sizable angular momentum, resulting in significant centrifugal distortion. Similar experiments ...

AMER PHYSICAL SOC2020

A stability theory beyond the co-rotational setting for critical wave maps blow up

Joachim Krieger, Shuang Miao

We exhibit non-equivariant perturbations of the blowup solutions constructed in [18] for energy critical wave maps into

\mathbb{S}^2

. Our admissible class of perturbations is an open set in some sufficiently smooth topology and vanishes near the light co ...

2020

Design of a Flexure Based Low Frequency Foucault Pendulum

Simon Nessim Henein, Ilan Vardi, Patrick Robert Flückiger

The Foucault pendulum is a well-known mechanism used to demonstrate the rotation of the Earth. It consists in a pendulum launched on linear orbits and, following Mach’s Principle, this line of oscillation will remain fixed with respect to absolute space bu ...

2020

Rotational stiffness of web-flange junctions of pultruded GFRP decks

Thomas Keller, Julia De Castro San Roman Fest, Sonia Yanes Armas

The rotational behavior of the web-flange junctions (WFJs) of a pultruded glass fiber-reinforced polymer (GFRP) bridge deck system with trapezoidal cell cross-sectional geometry was investigated. The rotational response of three WFJ types, in two bending m ...

Elsevier2017

The Design of A New Rotary Hexapod with A Single Active Degree of Freedom

Jamie Paik, Alexey Fomin

This study provides a novel approach for designing a rotary hexapod with a single actuator and definable motion of a platform. Hexapod is a parallel structure mechanism with six legs and six degrees of freedom (DoF) of an end-effector. It is not an underac ...

2017

Spin Polarization and Attosecond Time Delay in Photoemission from Spin Degenerate States of Solids

Jan Hugo Dil, Stefan Peter Muff, Mauro Fanciulli

After photon absorption, electrons from a dispersive band of a solid require a finite time in the photoemission process before being photoemitted as free particles, in line with recent attosecond-resolved photoemission experiments. According to the Eisenbu ...

American Physical Society2017

Higher-order continuation method for the rigid-body kinematic design of compliant mechanisms

Simon Nessim Henein, Lennart Rubbert

Compliant mechanisms are of great interest in precision engineering. In this paper we propose a higher order continuation method to help their rigid-body kinematic design. The method helps to investigate the choice of a mechanism configuration through the ...

Elsevier2017

Design of a Flexure-Based Flywheel for the Storage of Angular Momentum and Kinetic Energy

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Wave-momentum shaping for moving objects in heterogeneous and dynamic media

Digital-Image-Correlation for Simulating Cyclic Local Buckling in Steel Beams

Pseudomomentum: origins and consequences

Shapes of rotating normal fluid He-3 versus superfluid He-4 droplets in molecular beams

A stability theory beyond the co-rotational setting for critical wave maps blow up

Design of a Flexure Based Low Frequency Foucault Pendulum

Rotational stiffness of web-flange junctions of pultruded GFRP decks

The Design of A New Rotary Hexapod with A Single Active Degree of Freedom

Spin Polarization and Attosecond Time Delay in Photoemission from Spin Degenerate States of Solids

Higher-order continuation method for the rigid-body kinematic design of compliant mechanisms

Digital-Image-Correlation for Simulating Cyclic Local Buckling in Steel Beams

Rotational stiffness of web-flange junctions of pultruded GFRP decks

Shapes of rotating normal fluid He-3 versus superfluid He-4 droplets in molecular beams

Wave-momentum shaping for moving objects in heterogeneous and dynamic media

Pseudomomentum: origins and consequences

Design of a Flexure Based Low Frequency Foucault Pendulum

The Design of A New Rotary Hexapod with A Single Active Degree of Freedom

Spin Polarization and Attosecond Time Delay in Photoemission from Spin Degenerate States of Solids

A stability theory beyond the co-rotational setting for critical wave maps blow up

Higher-order continuation method for the rigid-body kinematic design of compliant mechanisms