Results 81 to 90 of about 73,454 (278)

Propagation of Rarefaction Pulses in Discrete Materials with Strain-Softening Behavior [PDF]

open access: yes, 2010
Discrete materials composed of masses connected by strongly nonlinear links with anomalous behavior (reduction of elastic modulus with strain) have very interesting wave dynamics.
Herbold, Eric B, Nesterenko, Vitali F
core  

Numerical verification of delta shock waves for pressureless gas dynamics

open access: yesJournal of Mathematical Analysis and Applications, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Krejić, Nataša   +2 more
openaire   +2 more sources

Field‐Driven Activation of Solid‐State Devices in Open Circuits for Energy Harvesting and Wireless Sensing

open access: yesAdvanced Science, EarlyView.
Time‐varying electric fields can activate solid‐state devices such as LEDs and capacitors for energy harvesting and powering in open circuits. The response of solid‐state devices to time‐varying electric fields caused by vibrations can be utilised for smart sensing of human motions and object vibrations.
Renyun Zhang   +6 more
wiley   +1 more source

Multiscale Architecture and Mechanics of the Cell Nucleus: Implications for Disease, Bioengineering and Nanomedicine

open access: yesAdvanced Science, EarlyView.
Nuclear mechanical properties are inherently scale‐dependent, arising from a hierarchical architecture that spans DNA, chromatin, the nuclear envelope, and condensates. Experimental techniques and theoretical models are integrated into a cohesive multiscale framework linking nanoscale structural features to organelle‐level mechanical behavior.
Xinran Liu   +15 more
wiley   +1 more source

Points of General Relativisitic Shock Wave Interaction are "Regularity Singularities" where Spacetime is Not Locally Flat

open access: yes, 2015
We show that the regularity of the gravitational metric tensor in spherically symmetric spacetimes cannot be lifted from $C^{0,1}$ to $C^{1,1}$ within the class of $C^{1,1}$ coordinate transformations in a neighborhood of a point of shock wave ...
Groah J., Israel W., Weinberg S.
core   +1 more source

Riemann problem for a two-dimensional quasilinear hyperbolic system

open access: yesElectronic Journal of Differential Equations, 2015
This article concerns the study of the Riemann problem for a two-dimensional non-strictly hyperbolic system of conservation laws. The initial data are three constant states separated by three lines and are chosen so that one of the three interfaces ...
Chun Shen
doaj  

A Worm‐Inspired Origami Robot with Multimodal Locomotion for Adaptive Mobility in Complex Pipeline Environments

open access: yesAdvanced Science, EarlyView.
An origami worm‐inspired robot achieves multimodal locomotion in confined pipelines through mechatronic integration that embeds actuation, control, and communication within each origami module. Large, reversible configuration and dimensional changes enable 25 gaits synthesized by a unified framework across peristaltic, inchworm, and wheel‐rolling modes
Qiwei Zhang   +6 more
wiley   +1 more source

Delta-shocks and vacuums in zero-pressure gas dynamics by the flux approximation

open access: yes, 2014
In this paper, firstly, by solving the Riemann problem of the zero-pressure flow in gas dynamics with a flux approximation, we construct parameterized delta-shock and constant density solutions, then we show that, as the flux perturbation vanishes, they ...
Liu, Jinjing, Yang, Hanchun
core   +1 more source

The Modeling of Shock-Wave Pressures, Energies, and Temperatures Within the Human Brain Due to Improvised Explosive Devices (IEDs) Using the Transport and Burgers' Equations

open access: yesFrontiers in Applied Mathematics and Statistics, 2018
This second paper adopts a more rigorous, in-depth approach to modeling the resulting dynamic-pressures in the human brain, following a transitory improvised explosive device (IED) shock-wave entering the head.
Stephen W. Mason
doaj   +1 more source

One-dimensional nonlinear chromatography system and delta-shock waves [PDF]

open access: yesZeitschrift für angewandte Mathematik und Physik, 2013
The author considers the Riemann problem for the following nonlinear chromatography system \[ \partial_t u+\partial_x\bigl(u/(1-u+v)\bigr)= \partial_t v+\partial_x\bigl(v/(1-u+v)\bigr)=0 \] and proves existence of a weak solution, which may contain delta-shock waves in the both components \(u,v\).
openaire   +1 more source

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