ABAQUS

Postdoc opportunity in the field of computational mechanics

Description

New Technologies Research centre at the University of West Bohemia
(Czech Republic) invites applications for a Postdoctoral position in the
field of Computacional Mechanics of Materials. Highly motivated
individuals holding a PhD in Mechanics, Materials Science or closely
related fields are encouraged to apply.


Aqua load by python

Dear All

I am quite new in this area.

Somebody can give me an idea on:

How to impose aqua loads by phyton scripting in abaqus?

Thanks in advance

Polluelo


Soud Choudhury's picture

Need help for running UMAT of Dr. Huang's single crystal

Hello Everyone,

I am a new member of imechanica. I have started to learn UMAT of Abaqus to model my material behavior ( Cu6Sn5, HCP) using crystal plasticity finite element model. I found Dr. Huang's single crystal UMAT to start learning UMAT and I thought that it would be a great guide to start though it is written for FCC mat. But unfortunately I was not able to run the UMAT with it's input file.

It is showing error " Too many attempts were made for this increment". I have no idea where I went wrong as I just ran the UMAT with it's own physical model. Please can anyone provide me a running UMAT of Dr. Huang ? I think there is something I need to change. Also, guideline for learning UMAT will be a great help.

 


Finit element Analysis of mandible bone with implant

Hi everyone
i work on a bio mechanic project. i am going to simulate a mandible bone
with implant. at first i want to use Materialise Mimics V10 to convert Ct Scan
data of a mandible without implant to a 3D model. i thought i could edit
the exported file on the other software (Ansys or Abaqus) to add the
implant. but, exported file from mimics can not have any edit .Actually
it has not volume and i need to have a 3D solid model. please help me !


Preprocessing files for ABAQUS XFEM implementation

Hello,

 

This is my first post in imechanica and i hope you can help me, im working in my finall project to obtain my MsC, im working in the simulation of crack growth in freeting fatigue, i found usefull the article post in imechanica by Eugenio Giner http://www.imechanica.org/node/4338. Im having problems with the preprocessin files, Can you help me with some information about how to create the input files? (i have some basics using ABAQUS CAE, but i dont know how to create the input files like mOXY.prn, TopNox see article)

 

Thanks for your help and sorry for my bad english

  PD: this is the link of the article in ScienciDirect http://www.sciencedirect.com/science/article/pii/S001379440800297X


SIMULIA's picture

Hear what Abaqus users have to say about the SIMULIA Community Conference

2013 SIMULIA Community Conference

May 21-24, 2013

Vienna, Austria

Connect with international users at this collaborative community event.

Highlights include keynotes from BMW Group and Ethicon Surgical Care,
Inc. (a J&J company)
and over 90 use-case presentations on Abaqus,
Isight, and Simulation Lifecycle Management.

Listen to what past attendees have to say.

http://bit.ly/YHl10u

For more information on the event visit: http://www.3ds.com/SCC2013


Cyclic loading abaqus

Hi colleague

 

can you help me to define a cyclic load of 1 kN (120 cycle per min ) in Abaqus?

does it diifrent to use static or dynamic analysis?

Thanks. 


characteristic Length

Hi

 

is there a way to get the characteristic length of one element? I wanna calculate xult (when the element is cracked, fracutred..). 

 I use the concrete damage plasticity model and after reaching the tensile strength i assume a linear softening with fracture energy.

 

Input are:

   Young´s modulus

   max. tensile strength

   fracture energy

 

Outpu:

   when do i reach xult or what is the plastic strain equivalent


Jing_Yang's picture

Would you like to recommend some ebooks on computational nonlinearity?

Hi, everyone:

    I'm recently very interested in computational nolinearity. Would you like recommend some monographs on the computation nonlinearity so that i can have a better understanding of the mechanism of ABAQUS.

    Thanks

  


Jing_Yang's picture

An example employing smeared crack model in ABAQUS documentation cannot converge?

 Dear all:
    I recently find an example in ABAQUS documentation cannont convergence.
    The parametres related with the iteration of the Risk method is 


Problem in linking Abaqus with Fortran

Problem in linking Abaqus with Fortran

ERROR in ABAQUS

Hi colleague

 does anybody know, what is this strange error :   Error in connection to analysis

i am trying to model fracture mechanics on piezoelecteric material, when i select the piezoelectric as a familiy in mesh part, then when runing the model, i recieve this error. if anybody knows how to fix it please help me.thanks 


ABAQUS UEL SUBROUTINE_Abnormal termination signal_Signal 6




Dear valuable members,





Thanks for the kind help in advance.





I would submit a well known error that I got in my run of
the UEL subroutine which has additional dof. the error is:


reading nodal values (EFENRRTR) into a UMAT routine

Hi,

I am using the VCCT method to model crack propagation and I am finding the value of G/Gc is too large for any sensible time step (1e-25).

I am attempting to incorporate a time incrementation scheme into my UMAT which monitors EFENRRTR and modifies the time step (or PNEWDT) according to it's value.


Simulation of fracture toughness test

Hi, I am new to ABAQUS. I want to simulate the fracture toughness test to predict the behaviour of materials(brittle/ductile). Please help me how can I proceed?

If possible give me some guidelines and if you have any documents regarding this topic kindly send it to: sufian.ulsan@gmail.com

Thanks in advance for your valuable suggession.


SIMULIA's picture

BMW and Ethicon Endo Surgery to Keynote 2013 SCC

We are pleased to announce the keynote presenters for the 2013 SIMULIA Community Conference! Hear firsthand how BMW Group and Ethicon Surgical Care, Inc., a Johnson & Johnson company, use SIMULIA solutions to stay ahead of the competition—keynote presentations by:

 

Rudolf Blaim - Department Manager Requirement Management and Verification in Process IT Idea to Offer, BMW Group

David Smith - Principal Design Engineer, Ethicon Surgical Care, Inc., a Johnson & Johnson company


Xiao Hu Liu's picture

Position for expert FEA analyst available at Dallas area, Texas

Please apply online. Do not contact me; I do not work in the company.

The Research and Computer Aided Engineering group at Carrollton Technology Center of Halliburton is looking for an expert FEA analyst at principal engineer level. This position requires

1) Extensive experience with nonlinear finite element analysis and fundamental understanding and knowledge of Solid Mechanics.


SIMULIA's picture

Simulation of Hail Impact Using the Smoothed Particle Hydrodynamic Method in Abaqus/Explicit

Ice or hail impact is an important design consideration in the aviation, energy, and astronautics industries.  Physical testing of impact scenarios can be expensive and impractical.  Numerical simulations provide cost effective and convenient tools for including hail impact scenarios in the design process.

Numerically simulating high speed ice or hail impact is challenging because of the extreme deformation, fragmentation, contact, and material model complexity.


Maximum Time Step Problems in ABAQUS

Hi,

 I hape a relatively simple question. I am trying to set a maxmimum time step for a job by the lines:

*Static, allsdtol=0, continue=NO

0.05, 1., 1e-25, 0.05

 

so I believe the maximum time step should be 0.05 giving me a minimum of 20 increments in the step in total. However the STA file below shows that the job starts at 0.05 and the appears to ignore the maximum time step command. Can anyone tell me why this occurs?

 Abaqus/Standard 6.10-2                  DATE 08-Jan-2013 TIME 14:29:13

 SUMMARY OF JOB INFORMATION:


loop inside a .psf file (parametric study file) in abaqus to get field variable output

Dear all,

Does anybody how we can put a loop (for example while loop) inside a .psf (parametric study) file in abaqus?

For example a loop on all the increments we want to get a field variable output. Take a look at the following code:

...


Ramping initial stress in Membrane elements

Hi,
I am doing an explicit analysis, i am trying to model a woven fabric structure. I have to pre-stress the fabric so i have used this option. 

*AMPLITUDE, NAME=name


ABAQUS> documentation > *.inp example files> Projectile impacting eroding plate

I have two questions about abaqus *.inp files.

first of all, as you may know, users are capable of running these type of example files through this way:

File> Import> Model...> SIMULIA>documentation>docs> v6.12> books> eif> *.inp

but when i run each of them (for instance Projectile impacting eroding plate: pl3d_erode_ccs.inp) , two important question marks above them will arised.

first, there isn't any geometry for parts and insted of that you see the term "orphan mesh" there. how we can extract a real geometry from an orphan mesh?


*MATRIX GENERATE - Global Stiffness matrix

Thank you  for your reply. I know but I was wondering if it is possible to omit them manually.

 One more question, I figured that using *MATRIX GENERATE, one could get the global stiffness, mass or load matrix in a ".mtx" file. But I am wondering why I can't get the file after the run.

https://www.sharcnet.ca/Software/Abaqus610/Documentation/docs/v6.10/book...

 Here is the keywords:

 

*HEADING
… 


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