4 Point bending test -Abaqus

Why does it stop running - what is the error message ? How does the deformed shape of the model look like at the end of the converged part of analysis ? More details are necessary to help with this (mesh, material model, step type, interactions, BCs, loads and so on). It would be best if you could share the .inp or .cae file.

Did you try enabling automatic stabilization in step settings ?

Thanks for your response

I am uploading the cae file if you can help me, please

The message is aborted. increment size is less

mesh (10x10), material model (piece wise linear plasticity model) , step type (General static), interactions (Tried all but these results were with general body contact), BCs, loads (displacement control)

What you attached is just the .jnl file. Please attach the .cae one.

find attached

find attached

Here's what you can try to avoid convergence issues in this case:
- make sure that your model is not underconstrained at any stage of the analysis
- enable automatic stabilization in step settings
- use dynamic implicit quasi-static step type or (as a last resort) dynamic explicit

Also, don't use such extreme values for maximum number of increments and minimum increment size. It won't help and will only unnecessarily increase the time before the analysis is terminated.

Thanks for your reply

I used automatic stabilization in step settings

The job was completed but weird results

Automatic stabilization may sometimes influence the results. To make sure that it's not the case here, compare ALLSD vs ALLIE and/or ALLWK energies and check viscous forces (VF). But you may have to include the damage model to fully represent the behavior observed in experiments.

@hussain and @FEA way / Hey guys, Could you please help me in plotting the Reaction force vs displacemnt graph in abaqus?
I have run a fortran subroutine fro crack propagation and have obtained results file as *odb format. In my script I have all the required outputs mentioned and I can see them in abaqus too but I am not able to plot the graphs from this *odb file. The following field outputs have been asked by me and visible -

*NODE PRINT, FREQ=0
*EL PRINT, FREQ=0
*NODE FILE,FREQ=0
*EL FILE, POSITION=CENTROIDAL, FREQ=1
S, PE, SP
*OUTPUT, FIELD, FREQ=1
*NODE OUTPUT
U, RF
*ELEMENT OUTPUT
S,
**
*CONTROLS,PARAMETERS=TIME INCREMENTATION
8,10,,,,,,25
*END STEP


Thank you

So you don't want to do it manually in Abaqus/Viewer as it's usually done ? Check the documentation section "Scripting --> Accessing an Output Database --> Using the Abaqus Scripting Interface to access an output database --> Reading from an output database".