Publications associées à Low-frequency wave propagation in post-buckled structures

Stress wave propagation through a 180° bend junction in a square cross-sectional bar

Jean-François Molinari, Antonio Joaquin Garcia Suarez, Ghatu Subhash

Longitudinal elastic stress wave propagation through a 180° bend junction connecting two square bars is analyzed using analytical and numerical approaches and validated against experiments. The aim is to identify conditions under which the one-dimensional ...

2022

Analytical 1D transfer functions for layered soils

Antonio Joaquin Garcia Suarez

Transfer functions are constantly used in both Seismology and Geotechnical Earthquake Engineering to relate seismic ground motion at different depths within strata. In the context of diffusive theory, they also appear in the expression of the imaginary par ...

ELSEVIER SCI LTD2022

Finite element method–discrete element method bridging coupling for the modeling of gouge

Jean-François Molinari, Guillaume Anciaux, Antonio Joaquin Garcia Suarez, Manon Eugénie Voisin--Leprince

We discuss the multiscale modeling of a granular material trapped between continuum elastic domains. The amorphous granular region, usually termed “gouge,” is under high confinement pressure, to represent the loading of faults at depth. We model the granul ...

2022

Generation of OAM-carrying space-time wave packets with time-dependent beam radii using a coherent combination of multiple LG modes on multiple frequencies

Tobias Kippenberg, Maxim Karpov, Zhe Zhao, Hao Song, Xinzhou Su

Space-time (ST) wave packets, in which spatial and temporal characteristics are coupled, have gained attention due to their unique propagation characteristics, such as propagation invariance and tunable group velocity in addition to their potential ability ...

Optica Publishing Group2022

Nonreciprocity in acoustic and elastic materials

Romain Christophe Rémy Fleury, Hussein Nassar

The law of reciprocity in acoustics and elastodynamics codifies a relation of symmetry between action and reaction in fluids and solids. In its simplest form, it states that the frequency-response functions between any two material points remain the same a ...

2020

Flexure Pivot Oscillator With Intrinsically Tuned Isochronism

Simon Nessim Henein, Ilan Vardi, Etienne Frédéric Gabriel Thalmann, Mohammad Hussein Kahrobaiyan

The most important property for accurate mechanical time bases is isochronism: the independence of period from oscillation amplitude. This paper develops a new concept in isochronism adjustment for flexure-based watch oscillators. Flexure pivot oscillators ...

2020

Radiation Limitations for Small Implanted Antennas

Anja Skrivervik, Zvonimir Sipus

Medical implants with communication capability are becoming increasingly popular with today’s trends to continuously monitor patient’s condition. This is a major challenge for antenna designers since the implants are inherently small and placed in a commun ...

IEEE2019

Electromagnetic Waves in a Time Periodic Medium With Step-Varying Refractive Index

Romain Christophe Rémy Fleury, Theodoros Koutserimpas

We present an exact mathematical framework for electromagnetic wave propagation in periodically time-modulated media, in which the permittivity is homogenous and modulated in a step-varying fashion. By using Hill’s equation theory, we show that this proble ...

2018

Analytical Time-Domain Solution of Plane Wave Propagation Across a Viscoelastic Rock Joint

Lyesse Laloui, Jian Zhao, Yang Zou

The effects of viscoelastic filled rock joints on wave propagation are of great significance in rock engineering. The solutions in time domain for plane longitudinal ( P-) and transverse ( S-) waves propagation across a viscoelastic rock joint are derived ...

Springer Verlag2017

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Low-frequency wave propagation in post-buckled structures

Stress wave propagation through a 180° bend junction in a square cross-sectional bar

Analytical 1D transfer functions for layered soils

Finite element method–discrete element method bridging coupling for the modeling of gouge

Generation of OAM-carrying space-time wave packets with time-dependent beam radii using a coherent combination of multiple LG modes on multiple frequencies

Nonreciprocity in acoustic and elastic materials

Flexure Pivot Oscillator With Intrinsically Tuned Isochronism

Radiation Limitations for Small Implanted Antennas

Electromagnetic Waves in a Time Periodic Medium With Step-Varying Refractive Index

Optimization based methods for highly heterogeneous multiscale problems and multiscale methods for elastic waves

Analytical Time-Domain Solution of Plane Wave Propagation Across a Viscoelastic Rock Joint

Graph Chatbot

Chattez avec Graph Search

Analytical 1D transfer functions for layered soils

Finite element method–discrete element method bridging coupling for the modeling of gouge

Stress wave propagation through a 180° bend junction in a square cross-sectional bar

Nonreciprocity in acoustic and elastic materials

Optimization based methods for highly heterogeneous multiscale problems and multiscale methods for elastic waves

Generation of OAM-carrying space-time wave packets with time-dependent beam radii using a coherent combination of multiple LG modes on multiple frequencies

Flexure Pivot Oscillator With Intrinsically Tuned Isochronism

Electromagnetic Waves in a Time Periodic Medium With Step-Varying Refractive Index

Radiation Limitations for Small Implanted Antennas

Analytical Time-Domain Solution of Plane Wave Propagation Across a Viscoelastic Rock Joint