Abaqus User element UEL

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,

Dear All,

I'm a new UEL user. In my UEL I have a big Matrix which eigenvalues and eigenvectors of these matric is needed. the matrix is not changing during the time and it has constant elements. As you may know, calculating eigenvalues and eigenvectors is a time consuming procedure. In every time incerement, ABAQUS calculating eigenvalues and eigenvectors with bunch of other things in 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

Dear Group,

does anyone know how section points can be defined in user-defined elements UEL ?

I am trying to program my own beam element in ABAQUS. The beam element library does not provide a beam element with temperature as a degree of freedom which would come as an asset in our application.

Beam elements feature so-called section that provide the spatial resolution through the thickness. I cannot find any clue how this can be programmed. ABAQUS standard elements give results for strain, stress and the like at these section points.

Hi all

I am in the process of developing my first user element in Abaqus, and finding it rather difficult. 

The
application requires modelling muscle behaviour. Hence a spring model
(linear at this stage) with 3 elements: 2 in series with each other,
and these 2, parallel to the third was implemented.

My problem involves static condensation of the stiffness matrix. (similar to mixed-methods)

Any advice/assistance would be great. Especially with regard to development of the user element in Abaqus.