User login

You are here

UEL

1073741819 error code in ABAQUS

Dear all,

I'm using UEL in ABAQUS. The UEL works perfectly as far as I have 256 time increments (each 1e-6 sec). When I'm trying to increase the time increments (let's say 512 with the same 1e-6 sec per increment) Abaqus gives me error code 1073741819.

I'm running Abaqus 6.14.2 with Intel Fortran Composer XE 2013 on a Windows 7. CPUs are 3rd generation.

I would appreciate if you could help me to figure it out.

Best Regards,

Problem in printing out the global stiffness matrix

Hi everyone,

I'm using UEL in ABAQUS. My model just has one 4-node element (defined in UEL) fixed in one end. When I'm running the UEL, it's working without any problm. But when I' trying to print out the global stiffness matrix I'm getting this error: "aborted with system error code 1073740940".

This is the way that I'm trying to print it out:

*STEP, NAME=STEP-1
*MATRIX GENERATE, STIFFNESS
*MATRIX OUTPUT, STIFFNESS
*END STEP

Beam Elements, UEL, ABAQUS, Rotation

Hi everyone,

I'm working on UEL and studying wave propagation in beam. I have a special purpose beam element defined in UEL which has four nodes.  When the beam is horizontal and a vertical load is being applied, it's working perfectly:

*Node
      1,           0.,           0.,        0.
      2,         0,           0.25,        0.
      3,           0.,           0.,        0.
      4,         0.,           0.25,        0.

Global Stiffness Matrix-UEL

Hi everyone,

I am working in UEL. I can get the stiffness matrix from fortran to be printed in .msg file.How can I print the global stiffness matrix of the model by using ABAQUS. My model is not big or complicated, so the global stiffness matrix shouldn't be too big!
Thanks!

Linking between MKL, LAPACK and ABAQUS

Hi everybody,

I'm an ABAQUS UEL user. I have Intel Parallel Studio 2013 installed on my computer with Visual Studio 2013 and ABAQUS 6-12.3

I'm almost a begginer in this area. I realized that Intel Composer XE 2013 (which has been intalled on my machine) contains MKL which has BLAS and LAPACK libraries in it.

I tried to use some of their functions (let's say eigenvalue solver and SVD solver). When I'm
trying to run it (abaqus job=test user=test1 int) I'm getting this error
message:

How to define a surface through UEL?

 Hello everyone,

 I want to  simulate contact problem by using UEL.I define the surface in the inp file.But abaqus don not 

recognize it. How can I solve this problem?

PS.  Sorry for my English.I hope it is clever enough to understand the problem.

Regards.

J.H. Zhai 

Stiffness Matrix (AMATRX) with complex numbers in UEL

Hi everybody,

I'm working on UEL. The stiffness matrix (AMATRX) which I have
defined is consisting of complex numbers (real and imaginary part).

When I'm running it I'm getting this error message:

Abaqus Error: The executable standard.exe aborted with system
error code 1073741819. Please check the .dat, .msg and .sta files for
error messages if the files exist. ...

Questions about UEL

Hi everybody,

I have a UEL for truss element (T3D2). I'm calling and reading some .dat files inside of the UEL. I'm just reading these files inside of the UEL without doing anything to them or with them (It's just a test case). Here is an example:

 

      OPEN(101, file="C:\Users\ak1070\Desktop\UMAT-UEL-UELMAT\UEL TEST\V1.dat", status='old',form='formatted',&
                    &action='read',position='rewind')  
      READ(101,*) AEVectors(1,:)      
      CLOSE(101)

      .

      .

      .

Question about UEL

Hi every body,

I'm a new user of UEL and have a questions. It would be very kind of you to help me with it.

I have a MATLAB code which gives me some big matrices. Is it
possible to save them as a file (.txt, .dat, etc) and call them inside
of the UEL? (It's almost impossible to change all of those codes to
FORTRAN or copy-paste them to UEL.)

Thanks in advance,

Best Regards,

-------------

Ashkan

Calling a File inside of the UEL

Hi everybody,

I'm writing a User Difined Element (UEL) for my research.

Would you please let me know if it's possible to call a file (txt, dat, etc) inside of the UEL or not?

Example:

    IF (LFLAGS(3)=1) THEN
        OPEN (UNIT = 10, FILE = "AAA.dat", STATUS = "OLD")
        READ (10, *), StiffnessTable
        AMATRX=StiffnessTable
    END IF

Thanks in advance,

Ashkan

Linking Abaqus 6.12-3 + VS 2012 pro+ Intel Compose XE 2013

Hi there,

 

Recently I had lots of problem with linking ABAQUS and Fortran compiler together. I did all of the things which has been described in forums but none of them worked for me. Finally I found the solution.

I'm using ABAQUS 6.12-3, Visual Studio 2012 Professional and Intel Composer XE Suites 2013. For linking them simply follow these steps:

1- find the file ifortvars.bat and its path.

Compatibility: Surface-Based Cohesive Behavior in UEL

Hi all,

 

I have been trying to model the surface interaction between two blocks of material using surface-based cohesive elements (*cohesive behavior). This works well in ABAQUS CAE (standard) when I set the material properties as "Mechanical, Elastic" so no problem with that.

However, I would now like to use the material properties from a fortran code. To do this, I was planning on defining the elements using *UEL with an overlay to record all the values. Is this compatible with cohesive zone elements? 

 

HELP : Modal Analysis of Piezoelectric UEL Element

Hello Experts,

 

I am trying to do modal analysis on user-defined piezoelectric shell element. My eigen value probelm of free vibration is given in the attachment.

Help me : Node Print of User Defined Degree of Freedom

Hello Experts,

 

I have written a uel subroutine where I have totally 12 degree of freedom. Among these 12 degree of freedom, 6 are standard abaqus degree of freedom (3 Displacements and 3 Rotations) and another 6 are User defined degree of freedom. 

I assign these these degree of freedom in following way.

*USER ELEMENT,TYPE =U9, NODES=9,PROPERTIES=24,coordinates=3
1,2,3,4,5,6
9,1,2,3,4,5,6,7,8,9,10,11,12

NUMBER OF EIGENVALUES FOUND ON THE INTERVAL EXCEEDS THE EXPECTED NUMBER.

Hello Experts,

 

I am trying to extract the eigenvalues of the User-Defined Element. I am getting following error when I try to extract frequencies using Lanczos method

*Frequency, eigensolver=Lanczos, acoustic coupling=off, normalization=displacement
3,,,, , ,

 

Please help me to resolve this error. Please find the message file in attachment.

UEL Subroutine aborts with error 5.

Hello Experts,

 

I have written a Uel subroutine and trying to implement on a plate constrained at all the edges. 

My UEL Subroutine executes without any errors when the total number of elements are just 15 to 20. But when I increase the number of elements and mesh it more fine, My Uel subroutine aborts with ERROR Code 5.

If I print the JELEM, UEL Subroutine is aborting always at 52th Element, i.e when JELEM=52. Even when I remesh the structure with different size, Uel subroutine consistantly aborts for the 52ed element.

Meshing with UEL/UMAT element

Hello All,

Does anyone have any idea how to automate meshing  using USER DEFINED ELEMENTS (for Example UEL) in Abaqus using python. Actually I need to mesh an arbitrary shaped structure  with 9-Node Quadrilateral Element. Abaqus doesn't support meshing of  9 Node Quad Element (S9R) either. 

How to update solution-dependat variable (SVARS) during iterations

Hello everyone,

 I am implementing a uel user subroutine in ABAQUS. This uel is for modeling contact in X-FEM framework. Thus, it's a nonlinear problem and I need to store some solution dependent variables during each iteration. I know I can store SDVs in SVARS. But this vector will update at the end of each step, and not during iterations. Anybody knows about this problem?

 I really appreciate if anybody can help me with this.

    Thanks

    Ehsan 

UEL ABAQUS Subroutine

Hi,

I'm stucking with my subroutine. May ask anybody to have a look the the file. 

I run a simple model that and try to run it,but an error message was appeared as below;   ***ERROR: USER SUBROUTINE UEL MISSING

 

I don't know what is the problem. I did locate the input (.inp) and user (.f) in the same folder and run it (abaqus job=.... user= ...ff int )

 

Hope to get help from anybody...

 

Aida

Postprocessing of user elements and user element output in abaqus 6.10

Hi

I have made a user element, UEL of a cohesive zone element. which is a 8 noded brick element with zero thickness. After solving models using this element I would like postprocess the model in abaqus CAE 6.10 in the way that I am able to:

UEL

Dear Friends,

I have written a UEL for Strain Gradient Plasticity and is working well when i give Boundary condition as Concentrated force, But when i apply displacement boundary condition the it leads to 'system error 144'.

Iknow that system error 144 corresponds to division by zero or infinity, but then why it is coming in on displacement boundary condition is i am worried about.

I will be extremely helpful to anybody for any type of help on above problem.

Thanking you in advance

Soham

UEL

Dear Friends,

I have written an UEL for Strain Gradient Plasticity but it shows following error :

FE SOLVER AND MESH HAVE INCOSISTENT NUMBER OF DOFS

I will be very thankful if someone can throw some light on this error.

Thanking in advance.

Soham

How to plot Stress Contours from ABAQUS UEL?

Hello, I am using the Abaqus UEL module to use a customised element type. I have all the  stress values at the Gauss Points (3x3 Gauss Quadrature) which I have exported through the SVARS variable. Is there any way I can plot the stress contours on the geometry in Abaqus or any other software ?

Thanks,Sourish

Subscribe to RSS - UEL

Recent comments

More comments

Syndicate

Subscribe to Syndicate