Hello all,
I'm running a Bone Remodeling simulation in ABAQUS in which I just use basic ABAQUS Static simulations in every loop with an amplitude table to model the loading behavior & after every fatigue load-step (i.e., one iteration or one ABAQUS simulation), I update the material properties based on the Strain Energy values generated by the simulation. So, basically, it is one ABAQUS simulation per iteration and then the material properties are updated accordingly, and a new .inp file is written for the next iteration/load-step
Now, sometimes, in the middle, lets say after 1000 load-steps, ABAQUS starts writing .odb_f file as well as an .odb file, and when I tried opening them in ABAQUS GUI, I don't see any results at all. However, if I take the .inp file corresponding to that load-step, import into ABAQUS GUI and run the simulation, I see that the simulation is converging. So, basically nothing seems to be wrong with the .inp file as such.
Anyone has any experience with this .odb_f file in ABAQUS? Why is it written?
Thanks in advance! :)
Hi Bala Vignesh,
if I uderstood properly your setup, for each step, you generate an .inp and its associated .odb.
Normally, when I see an .odb_f, something wrong happened during the simulation.
You can find some guidence in the .msg file or in the .dat file (search for the word ERROR in both files).
For example, in my case (a plastic bending problem), to overcome the problem, I use to play either with the initial step time (position 1, with a value of 0.1 in the example below) or with the minimum step size (position 3 = 1e-0.5).
In addition, as your problem appears after 1000 steps, maybe you should try to increase the maximum step number in your .inp file (position 4 = 1). Use this last idea as a suggestion, please.
Best regards,
Ramiro
Example
** STEP: Step-1
**
*Step, name=Step-1
*Static
0.1, 1., 1e-05, 1.
Thank you, Ramiro Mena Andrade . That certainly helped me understand about the .odb_f files
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