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A Post-doctoral Position in Ultrasonics at the Ohio State University

Submitted by Jia Li on
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Post-doctoral position is available in the area of ultrasonic nondestructive evaluation (strong background and experience in ultrasonic experiment and modeling are required). The focus area is ultrasonic study of like polycrystalline materials, composites and adhesive bonds. State of the art ultrasonic laboratories and other characterization facilities are available. More details will be provided to interested individuals.
Interested candidates should contact

Chinese Scholarship Council PhD in Computational Mechanics

Submitted by Stephane Bordas on
job
PhD; Chinese Scholarship Council; Fellowship; fee waiver; Cardiff University; Computational mechanics;

Three PhD studentships available at Cardiff University. Deadline Friday 24th of February.

Assuming you get a CSC scholarship, this fellowship will waive your tuition fee for study in computational mechanics in our group. 

Please APPLY ONLINE to the University and send me (stephane dot bordas at gmail dot com) a one paragraph research proposal about what you intent to work on. Themes are:

- multiscale fracture

- meshless methods

- extended finite element methods

- moving boundary problems

- fibrous flows

Abaqus user connector element?

Submitted by jandre on

Dear All,

I'd like to know your advise on the following problem:

I'd like to model the behaviour of steel column to steel beam joints using a phenomenological model. I'm using connector elements to do this, namely UNIVERSAl and JOIN connectors.

In the connector behaviour I'd like to model the non-linear behaviour of the joint considering the loading, unloading and reloading (in the opposite directions, stress sign). The loading and reloading curves are different.

python, abaqus, inp file

Submitted by jandre on

Hi All!

My problem is quite simple:

I need to change (add arguments) to a inp file, then submit the inp file
for analysis and finally to
read some results from the odb file.

I choose to use python (not the PDE provided by abaqus CAE but the
general python GUI). I’m sure this choice has consequences, perhaps the
import abaqus won’t work? This could bypassed if I run my code using abaqus python in the command window.

PhD Structural Vibration and Analysis/Computational Mechanics

Submitted by Stephane Bordas on
job
PhD;structural vibration; computational mechanics; New-Zealand;

PhD Scholarship: Structural vibration analysis and computational mechanics

One scholarship is available for a PhD student to pursue research in the School of Engineering at the University of Waikato towards the development of a general analytical procedure for vibration analysis of complex structures. In modelling solid bodies with voids, we will consider treating the voids as embedded negative bodies.

The successful candidate will work with:

Professor Sinniah Ilanko and Dr Yusuke Mochida (University of Waikato, New Zealand)

FEAP - user element subroutines

Submitted by Mubeen on
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Computational Mechanics Forum
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Plasticity
FEAP
user elements

Hi all,

my question is about the history data storage in FEAP.

I am writing element subroutine (elmt01) in FEAP 8.3  for a history dependent problem (crystal plasticity).

I have written the stiffness
matrix subroutine (stiff01), but it needs the data from the previous
solution steps (previous strains, stresses, plastic strains, dislocation
densities .... nh1,nh2=30 per point).

ABAQUS Johnson-Cook damage model

Submitted by Johnson G on
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Ask iMechanica

The constants of the Johnson–Cook fracture criterion D1, D2 ，D3，D4 and D5 are identified from tensile tests or torsion tests, but I don't kown about  the specific procedure to obtain the constants. sigma*=sigma(m)/sigma,sigma(m) is the average of the three normal stresses,sigma  is the von Mises equivalent stress. The sigma （stress）obtained from the tests is corresponding to the which sigma in the equation. Thanks for your information 。

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