Sharing ABAQUS UMAT and VUMAT subroutines

November 29, 2007, 5:23 am

≫ Next: how do i model stress wave propagation in a shpb

I have noticed that a lot of people are using UMAT and VUMAT material model
subroutines for their researches. However, most of these subroutines do not
find their way to free code market and remain in the hands of the developers.
Therefore, a lot of wheel re-inventing has to be done by other people. Since
development and testing of a material subroutine takes a damn long time, I
think it is a good idea if each of us can share the subroutines she has
developed with the others. I know that a couple of subroutines are publicly
available and many other people also know that. Please comment about less-known
freely available subroutines.

To be more specific, I think it would be useful if people can comment about
following highly demanded UMAT subroutines:

1.Cohesive zone elements models

2.Polycrystalline plasticity

3.Gurson-type ductile fracture models

Note added by admin: This topic has also been discussed in another thread: http://www.imechanica.org/node/2375

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how do i model stress wave propagation in a shpb

August 5, 2010, 5:39 am

≫ Next: Badri Veluri Hi

≪ Previous: Sharing ABAQUS UMAT and VUMAT subroutines

I am an MSc student and my dissertation topic requires me to model a split hopkinson pressure bar.I am modelling a SHPB assembly together with the specimen, and I am having trouble with placing the loads,creating the boundary constrain between the incident, transmitter bar and the specimen. I created the interaction between the assembly with a suppressed TIE, and after loading and submitting the job I kept on getting errors. The load did not transmit to up to a quarter of the incident bar.
I neeed suggestions on how to apply the attachment between the separate components that make up the assembly, how to time step properly and the loading sequence.
I made use of ABAQUS Explicit

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Badri Veluri Hi

August 8, 2010, 12:42 am

≫ Next: Modeling thermal debinding behaviour on Abasus or Comsol

≪ Previous: how do i model stress wave propagation in a shpb

Badri Veluri

Hi Erik,

Can you please share your knowledge as I am working on building the UEL for a cohesive zone model under fatigue loading. So that if I refer your knowledge base it would help me in getting some good point.

E-mail: badrinath.veluri@hotmail.com

Thanks in advance

Regards

Badri

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Modeling thermal debinding behaviour on Abasus or Comsol

March 28, 2011, 3:11 pm

≫ Next: please help me

≪ Previous: Badri Veluri Hi

Hi freinds,

I 'm preparing PHD Tthesis in mechanics feild, i arrived to modelise densification of powders on Abaqus, but i can't modelise the thermal debinding behaviour (loss of polymer weight vs temperature). Anyone have an idea about this.

I have comsol and Abauqs

Thanks for your answers !

belman@hotmail.fr

Bel

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please help me

May 4, 2011, 8:08 pm

≫ Next: Request

≪ Previous: Modeling thermal debinding behaviour on Abasus or Comsol

Hi dear friends
After much effort and time and confusion with VS, Intel Fortran Compiler and Abaqus (installaion,version,paths,...), I finally could run an analysis with UMAT subroutine successfully. This run and also some others were all extracted from Abaqus Documentation.
Now i wanna implement an analysis by my own. So i read the documentation and wrote a UMAT file by making my own changes in documentation file. From algorithm point of view, the file is correct. But i wanna know how i could link the Fortran file and Abaqus file. I mean how Abaqus realizes the Fortran file is the compatible subroutine for the model? Logically, a subroutine file shouldn't be compatible with another abaqus file. (I don't know if i could explain my problem !)

By the way, i've figured out that one of the links is about Property module. I should define a USER MATERIAL in "Edit material", and i also should define variables in there compatible with PROPS ( I'm mixed up right now!!!).

PLEASE guide me.

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Request

July 12, 2011, 1:24 am

≫ Next: Over time I have written

≪ Previous: please help me

Hi friends,

I need umat subrotine(Lemaitre damage model)

please send for me if u have it.Thank u.

My email: epeyman_hf@yahoo.com

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Over time I have written

September 13, 2011, 1:48 am

≫ Next: an error in abaqus

≪ Previous: Request

Over time I have written UMAT and UEL routines for progressive failure analysis, higher-order plate finite elements, specialized adhesive elements, and a score of decohesion finite element incorporating various coupled cohesive zone models to joint 1-D beam, and 2-D and 3-D continuum elements. kidney stones

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an error in abaqus

December 31, 2011, 6:06 am

≫ Next: Hi kawaminaii !

≪ Previous: Over time I have written

I have compiled a fortran code and used it as a subroutine but I have resieved this errore:

Error in job Base_subro: Problem during linking - Abaqus/Standard User Subroutines. This error may be due to a mismatch in the Abaqus user subroutine arguments. These arguments sometimes change from release to release, so user subroutines used with a previous release of Abaqus may need to be adjusted.

Wht should I do with it?

Thanks

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Hi kawaminaii !

December 31, 2011, 6:59 am

≫ Next: anisotropic hardening

≪ Previous: an error in abaqus

I have met this problem before.Maybe there is some error in your Fortran file,you can check it out especially for the program grammar.

Good luck!

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anisotropic hardening

February 13, 2012, 1:33 am

≫ Next: subroutine

≪ Previous: Hi kawaminaii !

Hi,Does any one worked with Vumat subrotine for anisotropic hardening ?If you have any sample code for anisotropic hardening just let me know.

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subroutine

March 4, 2012, 12:17 am

≫ Next: Linking between C++, Fortran and ABAQUS

≪ Previous: anisotropic hardening

Hi freinds

days ago i write a subroutine for contilever beam whit various young modulus.it is true for 2D beam but for 3D beam write error.

ERROR:Too many attempts made for this increment

Abaqus/Standard Analysis exited with an error - Please see the message file for possible error messages if the file exists.

i change the load and step increment freuqently but its not true yet.i dont khnow where is Incorrec.

please help me.............

thanks.

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Linking between C++, Fortran and ABAQUS

May 18, 2012, 8:49 pm

≫ Next: BUETIAN!!!!!!!

≪ Previous: subroutine

Hello,

I have recently purchased Intel Visual Fortran 11.1.072 and Visual Studio 2010. I am currently using ABAQUS 6.10ef2. After installing this according to the following sequence,

1. Microsoft Visual C++

2. Intel Fortran

3. ABAQUS

my verification shows that the status of both visual studio and fortran is failed. Is there anybody who can help me in this regard?

Mesbah

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BUETIAN!!!!!!!

May 21, 2012, 9:42 am

≫ Next: Help about a work

≪ Previous: Linking between C++, Fortran and ABAQUS

Mesba Bhai.....I am from 03 batch....BUET. I did my Msc and BSc thesis using ABAQUS. where are you now? you are also my FB friend!.

akjon BUETIAN dekhe valo laglo:-)

what are you doing using ABAQUS?

you can personally communicate me @sajib.civil@gmail.com

I will be glad to have a response frome you.

Thanking You
B.K.M.Ashraful islam SAJIB

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Help about a work

July 10, 2012, 2:55 am

≫ Next: femur fracture damage static and dynamic umat abaqus

≪ Previous: BUETIAN!!!!!!!

hey

I am doing approximately the same thing and I have some problems, could you please send me an example of what you have done?

I have no idea where should I start actually to write a failure analysis code. :(

Thank you

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femur fracture damage static and dynamic umat abaqus

April 28, 2013, 12:58 am

≫ Next: I want a GTN model subroutine and try to modify it

≪ Previous: Help about a work

salam
I needmodeloffemurabaqusand howstatic loadingoncortical bone
Whatis the relationship betweenabaqusandumat
thank you
Myemail:salah_cao@yahoo.fr

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I want a GTN model subroutine and try to modify it

June 4, 2013, 8:35 pm

≫ Next: configue abaqus to fortran

≪ Previous: femur fracture damage static and dynamic umat abaqus

Hi friends,

I need umat and Vmatsubrotine (GTN model)

please send to me if u have it. Thank u.

My email: guojunhang@163.com

fracture;plasticity

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configue abaqus to fortran

June 24, 2013, 6:05 am

≫ Next: hallo I need to used the

≪ Previous: I want a GTN model subroutine and try to modify it

pleasei needhow to configureabaquswithfortranand Iinstallabaqus6.11 andFORTRAN10 andmicrosoftvisual 10programwhenrun underabaqusthere is aerror: Problemfalling oncompilation-ifort.exenot foundinPATH.
how willbeplease
thank you