research

Lithium-Assisted Electrochemical Welding in Silicon Nanowire Battery Electrodes

Submitted by Teng Li on Mon, 04/30/2012 - 21:05

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lithium-ion battery

Si nanowire

Nano Letters , 12, 1392-1397 (2012). DOI:10.1021/nl204063u

Crack propagation analysis in cold rolling process using abaqus

Submitted by kdevarajanmts on Mon, 04/30/2012 - 15:02

research

Respected Sir,

orthotropic plates analysis

Submitted by hrbeu221 on Mon, 04/30/2012 - 00:44

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orthotropic material simulation

Hi, please help me on the simulation on the orthotropic material in ABAQUS. I have the parameters for the material density=1584;

Ex=127.9e9

Ey=10.27e9

muxy=0.22;

muyx=0.0177;

Gxy=7.312e9;How can i use the orthotropic or engineering constant to simulate the material. I want to calculate frequency for orthotropic plates.

Graphite epoxy plates

Graphite/epoxy consisting of 12 plies oriented at 0 and fabricated from Fiberite

Hy-E1034C prepreg

Thank you for your concern.

Effect of fiber arrangement on mechanical properties of short fiber reinforced composites

Submitted by Zuoqi Zhang on Fri, 04/27/2012 - 03:47

2-D "tension-shear chain" model (Ref.1-3) is well known successfully capturing the basic mechanical features of staggered structures in shell-like biomaterials. Our recent paper appeared in Comp. Sci. Tech. developed a three-dimensional (3D) "tension-shear chain" theoretical model to predict the mechanical properties of unidirectional short fiber reinforced composites, and especially to investigate the distribution effect of short fibers.

modeling by ABAQUS

Submitted by monzer on Thu, 04/26/2012 - 19:45

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Hello,

I want your help

I'm doing a model by ABAQUS. I want to apply force in the first step and after that I want to change the geometry in the second step (I want to do a hole in my geometry).

How can I change my geometry after applying the force?

can you help me please?

Thanks

Monzer

Interaction properties

Submitted by erismy1 on Thu, 04/26/2012 - 09:03

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graded beam cantilever

I am cuurently using 12 ply GFRP. After submtting the job file, the visualisation of the displacement showed ther is non-contact between the ply at free end. I ma uusing a model of free baem cantilever.

How to ensure there is no such non contact between the plies?

Strain-Controlled Switching of Hierarchically Wrinkled Surfaces between Superhydrophobicity and Superhydrophilicity

Submitted by Zuoqi Zhang on Thu, 04/26/2012 - 08:41

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BIOINSPIRED DESIGN

Hierarchical and Multifunctional Devices

Recent years have witnessed intense interest in multifunctional surfaces that can be designed to switch between different functional states with various external stimuli including electric field, light, pH value, and mechanical strain. The present paper is aimed to explore whether and how a surface can be designed to switch between superhydrophobicity and superhydrophilicity by an applied strain.

Concrete cracking and durability (first entry)

Submitted by shavijabranko on Thu, 04/26/2012 - 08:09

Hi all,

I am a PhD researcher working on relationship between cracking of concrete and its durability, using both experimental and numerical approaches. The work is being carried out at Delft University of Technology, in the Netherlands. For anyone interested, here is the webpage of the project:

microlab-m3c4.blogspot.com

Please feel free to send us any comments, suggestions, and possible collaboration proposals using the contact details provided on the website.

Branko

Why is glass brittle?

Submitted by amohajerani on Wed, 04/25/2012 - 16:58

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What makes glass brittle? I am posting this because I don't have a good answer for it, although I can think of three reasons:

-
The disordered structure of glass. The problem with this explanation
is that silica is brittle in both ordered (quartz) and disordered (fused
silica) forms.

-
The covalent type of atomic bonds. The problem with this explanation is
that metallic glasses do not have covalent bonds, but are brittle.