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Virtual Special Issue: CFD simulation of pedestrian-level wind conditions around buildings: past achievements and prospects

Submitted by Laure Ballu on

This Virtual Specail Issue deals with papers on CFD simulation of pedestrian-level wind conditions around buildings, published in the Journal of Wind Engineering and Industrial Aerodynamics (JWEIA).

Force and stroke of a hydrogel actuator

Submitted by Widusha Illeperuma on

Hydrogels that undergo a volume phase transition in response to an
external stimulus are of great interest because of their possible use as
actuator materials. The performance of an actuator material is normally
characterized by its force–stroke curve, but little is known about the
force–stroke behavior of hydrogels. We use the theory of the ideal
elastomeric gel to predict the force–stroke curves of a
temperature-sensitive hydrogel and introduce an experimental method for
measuring the curve. The technique is applied to PNIPAm hydrogels with
low cross-link densities. The maximum force generated by the hydrogel
increases with increasing cross-link density, while the maximum stroke

True Stress-Strain curve of metals

Submitted by PenPen on

Hi everyone!

I was hopping to find some help over here. I just need some references or links to the true stress-strain curves of differents metals. I'm working with Tin and i'm going to do run some compression test to valid an analitic method. In order to do this, I need the strain-hardening exponent (n) and the strength coefficient (C) and it's being impossible to find those.

Atomistic-to-Continuum Multiscale Modeling with Long-Range Electrostatic Interactions in Ionic Solids

Submitted by Jason Marshall on

This is the preprint of an article that will appear in the Journal of the Mechanics and Physics of Solids. (doi:10.1016/j.jmps.2013.09.025).

Atomistic-to-Continuum Multiscale Modeling with Long-Range Electrostatic Interactions in Ionic Solids

by Jason Marshall and Kaushik Dayal, Carnegie Mellon University

 

Abstract 

We present a multiscale atomistic-to-continuum method for ionic crystals with defects. Defects

Modeling and Simulation of Moisture Diffusion in Hybrid Fiber-reinforced Polymer Composites

Submitted by prathyush963 on

Hybrid fiber-reinforced polymer composites have
extensive applications due to their high strength, corrosion resistance,
low maintenance and design flexibility. However, moisture absorbed by
composite components plays a detrimental role in the integrity and
durability of hybrid structure since it can degrade the mechanical
properties and induce interfacial delamination failures. In the current
study, the moisture diffusion characteristics in two-phase
(unidirectional S-glass fiber reinforced epoxy matrix/unidirectional
graphite fiber reinforced epoxy matrix) hybrid composites using moisture
concentration-dependent diffusion method have been investigated. In the
moisture concentration-dependent diffusion method, the diffusion