research

Working on wave propagation on pipe/cylinder

Submitted by mullerab on Sun, 11/02/2008 - 09:38

I am working on pipeline crack detection simualtion using Ansys. since wave propagation is a transient analysis and I have never used Ansys for this kind of simulation. Help me out if you know any source where I can take it as a reference and start my simulation.

Thanks

Modelling mortar interfaces with ABAQUS or ANSYS

Submitted by Angelos Irakleidis on Fri, 10/31/2008 - 22:21

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Journal Club Theme of Nov. 1 2008: Mechanical behaviour of rubber-like materials

Submitted by ErwanVerron on Wed, 10/29/2008 - 21:20

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rubber

Vacancy-hole and vacancy-tube migration in multiwall carbon nanotubes

Submitted by Jianyu Huang on Wed, 10/29/2008 - 21:04

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carbon nanotubes

in-situ electron microscopy

Vacancy Hole

Vacancy Tube

TEM-STM

High Resolution Electron Microscopy

Phys. Rev. B 78, 155436 (2008) J.Y. Huang, F. Ding, B.I. Yakobson

Modeling of large strain deformation in Abaqus

Submitted by hadi on Wed, 10/29/2008 - 17:43

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Hi everybody,

I'm trying to model large strain deformations in Abaqus by writing a user defined material code in order to implement the governing constitutive equations of the material. As far as I know, Cauchy stress tensor should be used in the model to presume non-linear finite elements, but I don't know how one can implement Cauchy stress tensor in a UMAT used by Abaqus.

Thanks,

Hadi

An inverse-pole-figure method for analysis of polycrystalline ferroelectrics/ferroelastics

Submitted by Faxin Li on Tue, 10/28/2008 - 23:52

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Recently, enlightened by the definition of inverse pole figure in Materials Science, I proposed an inverse-pole-figure (IPF) method for analysis of domain switching in polycrystalline ferroelectrics/ferroelastics.

How to define a displacement rate as a pressure uniform load?

Submitted by Gadoo on Tue, 10/28/2008 - 20:09

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Abaqus 6.7-1

Dear All,

I would like to simulte a 2-d tension test which has been conducted using a displacement rate 1mm/min till failure. Can some one explain how to define this displacement rate using Abaqus 6.7? Also, I would ask another question, can this displacement rate be considered as a vilocity? and can be modeled as a velocity field?

Regards,

M. G. H

McGill University, Canada

Modeling masonry in ABAQUS

Submitted by dhruba on Tue, 10/28/2008 - 11:36

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I am quite new to ABAQUS and trying to model structural masonry.I am facing difficulties in defining material property and analysis procedure.I was wondering if anybody has worked on this particular area and provide me with some useful resources.

Any Help in this regard will be highly appreciated

Thanks and Regards,

Dhruba

Mechanics of buckled carbon nanotubes on elastomeric substrates

Submitted by Jianliang Xiao on Mon, 10/27/2008 - 21:37

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Carbon nanotube

buckling

elastomeric substrate

We have studied the scaling of controlled nonlinear buckling processes in materials with dimensions in the molecular range (i.e., ～1 nm) through experimental and theoretical studies of buckling in individual single-wall carbon nanotubes on substrates of poly(dimethylsiloxane). The results show not only the ability to create and manipulate patterns of buckling at these molecular scales, but also, that analytical continuum mechanics theory can explain, quantitatively, all measurable aspects of this system.