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python, abaqus, inp file

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.

alinia's picture

1-way coupling & 2-way coupling in FSI problems

Hi all,
any one know what is difference between "1-way coupling" and "2-way coupling" in FSI problems?
Is there any difference between above methods and "weak coupling" and "strong coupling" methods ?

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The successful candidate will work with:
Professor Sinniah Ilanko and Dr Yusuke Mochida (University of Waikato, New Zealand)

Mubeen's picture

FEAP - user element subroutines

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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).

moving heat source

how to do moving heat source , without using subroutines

Johnson G's picture

ABAQUS Johnson-Cook damage model

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 。

Implementation of p-p Interactions in Molecular Dynamics Simulation

Dear All,

I want to simulate polymer system that have pi-pi interaction between

chains and reinforcements. I know there is no implemention of pi-pi

interaction in lammps.

So, Is there another method to consider pi-pi interaction in lammps? or

I can't simulate these system by lammps.

Regards,

Azadeh

Abaqus equivalent of MSC.Marc's element #144

Hi All,

Any idea what would be Abaqus equivalent of Marc's rebar element #144? Thanks in advance.

Regards, Mike 

lizheng619's picture

Abaqus Quasi-static induced numerical damping

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The Quasi-static method for dynamic problem in Abaqus should be carefully used, because it will automatically induce the numerical damping in your calculation.

This method is very conservative, approximately it will introduce 5% numerical damping (damping ratio).

This method is helpful for contact problem and for convergency. But be careful when using it.

Mubeen's picture

FEAP - history variables for 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.

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).

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LRET Lecturer/Senior Lecturer/Reader in Safety and Reliability Engineering

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Building on a 20-year track record in safety engineering, the School of Engineering at the University of Aberdeen in partnership with The Lloyd's Register Educational Trust (The LRET) is establishing a centre of excellence for research and teaching in the safety and reliability of engineering systems, structures and processes.

mechevikas's picture

Laser machining of composite materials..

hai

can we do laser machining of composites materials like glass fiber etc.. from simple laser machine or we have to use special fiber laser for this..please through some light on this topic....

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Journal of Acta Mechanica Sinica

Editors-in-Chief (July 2011-June 2015)  

International Conference on Computational Mechanics, Durham, UK, 25-27 March 2013

Dear Colleagues, On behalf of the CM13 Organising Committee, I would like to invite you to attend an International Conference on Computational Mechanics - CM13, to be held in Durham, UK from 25-27 March 2013. The conference is organised under the banner of the UK Association of Computational Mechanics in Engineering (ACME) replacing, for 2013, the annual ACME meeting with a much larger and truly international event. A flyer containing full details of the conference can be downloaded here.

Abaqus/Explicit memory usage


Hi all. I am running forming analysis on abaqus 6.10 on 64 bit platform with 8 gb of RAM. How can I give max memory usage for abaqus/explicit? There is a built in option for abaqus/implicit but for explicit there is no such option.

I want to allocate max amount of RAM for the analysis. Please help me with that.

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The root cause of strain rate sensitivity

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Hi everyone:

We all know that materials may perform different strain rate sensitivity. Is there a root cause of this sensitivity? 

how to model a 3D reinforced concrete model in ANSYS

Hi everyone,

                  I am trying to model a 3D reinforced concrete beam in ANSYS. I got difficulties to put reinforcement in concrete. please help.

 Thank you very much.

 

need a johnson-cook plasticity model umat in abaqus

I need a johnson-cook plasticity model umat in abaqus。Any help will be appreciate。thanks

J Integral with dynamic explicit

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Hi,

I am trying to solve a 3PB specimen with a notch. I am doing the dynamic explicit analysis. I want to find the J-integral. Giving the J-integral as history output. Trying to run it gives following error.

---------

***ERROR: THIS KEYWORD IS NOT AVAILABLE IN Abaqus/Explicit
 LINE IMAGE: *contourintegral, crackname=H-OUTPUT-2_CRACK-1, frequency=0,
             normal, contours=2, cracktipnodes

----------

Running the same for dynamic implicit analysis works fine.

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NSF Summer Institute Short Course on Materiomics @ MIT -- May 30-June 1, 2012

NSF Summer Institute Short Course on Materiomics—Merging Biology and Engineering in Multiscale Structures and Materials

Location: Massachusetts Institute of Technology, LeMeridien Hotel (former Hotel@MIT)
Chair: Markus J. Buehler, Massachusetts Institute of Technology (mbuehler@MIT.EDU
Dates: May 30 (Wednesday) morning to June 1 (Friday) evening, 2012

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