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  1. Konsti

    Abaqus Explicit parallelization

    Update: loop parallelisation (instead of domain) seems to work, although less efficiently. If anyone has a better way of parallelising (with domains) using the .env settings above, please advise! :)
  2. Konsti

    Abaqus Explicit parallelization

    Thank you FEA Way, I have no idea how to do this, zero experience with overwriting settings using the .env files. I tried: can't find where this variable is and I don't know how to modify it. What does "set to ON" mean? Do I write XPL_LINK_NOMERGE = ON? Or = True? Abaqus could make our lives...
  3. Konsti

    Abaqus Explicit parallelization

    Hi and sorry to join the party so late. I've had my own fair share of parallelisation errors, the last one being "domain decomposition error": I submit my model to the cluster with 5 cores, parallelisation in 5 domains, dynamic load balancing=off (because I have a job restart), mp_mode =...
  4. Konsti

    Gratitude to forum members

    Amen. Thank you indeed!
  5. Konsti

    Material failure and element deletion in Abaqus/Explicit

    I get this...
  6. Konsti

    Material failure and element deletion in Abaqus/Explicit

    Yes, already doing that (with the default linear energy dissipation). It seems to work with beam elements (huge loss of stiffness as expected) but I cannot choose element removal in CAE or in the .inp file, is this normal? When I apply it to shell elements I still can't cause this stiffness...
  7. Konsti

    Material failure and element deletion in Abaqus/Explicit

    Thanks FEA way, So to achieve the stiffness degradation I would have to use a damage model. However the same as the above (i.e. no failure) happens when I implement the Hashin criterion. I don't see what is so wrong...
  8. Konsti

    Material failure and element deletion in Abaqus/Explicit

    Hi, I'm trying to implement material failure in its simplest form, as it is available in Abaqus/CAE at the elasticity table (fail stress). Even when I put small values (e.g. 0.2), the analysis shows my slab reaching a stress of 68 without failing. Where am I wrong? How can I correctly implement...
  9. Konsti

    Abaqus/Explicit contact overclosures and excessive rotations

    I need to dig into that. It looks like actual parts are excessively deforming indeed (even breaking). Connectors are broken, so no issues there. I have no material failure, so it's weird that the elements themselves would break. Maybe the solver is going a little crazy due to contacts? The only...
  10. Konsti

    Memory settings for Abaqus/Explicit in a HPC cluster

    I have had no luck trying to contact 3DS before. Also, our cluster support receive no support for Abaqus, apparently. I will try contacting another IT department. Thank you for the tips. If you have any other ideas please let me know.. Konsti
  11. Konsti

    Memory settings for Abaqus/Explicit in a HPC cluster

    Where exactly should I report, do you know? Here? https://www.3ds.com/products-services/simulia/services-support/support/
  12. Konsti

    Abaqus/Explicit contact overclosures and excessive rotations

    Hi, There is a sudden change at that moment, as two connector break and the structure is accelerating. However, I'm surprised that this is causing an error in the explicit solver, which is supposed to be working well in such sudden changes, and if fact it has most of the time in my experience...
  13. Konsti

    Abaqus/Explicit contact overclosures and excessive rotations

    Hi, Can anyone help me understand why is Abaqus issuing an "excessive rotation" error and aborting an analysis, when this analysis is using the explicit dynamic solver? You can find attached the error from the status file screenshot. I also attach the message file with a warning about the...
  14. Konsti

    Memory settings for Abaqus/Explicit in a HPC cluster

    Hi Mr/Ms heroic FEA way, I use Abaqus/2021 and I have had the same issue also with the 2020 and 2019 versions.
  15. Konsti

    Memory settings for Abaqus/Explicit in a HPC cluster

    ...of cores, turning off dynamic load balancing (since I have predefined fields in my analysis, which are not supported by DLB), and setting memory explicitly to 20GB (5 cores*4GB each). Is there something awfully wrong that I am doing here? Thank you in advance for your help, Konstantinos
  16. Konsti

    SImple model with Abaqus connector element

    A bit late in this party, but I would like to note that I use connectors a lot and it took me a while to understand how to connect them to the rest of my model. What I do now is divide and mesh my elements such that I connect mesh nodes (and not points) together.
  17. Konsti

    Abaqus restart analysis

    ...model .inp file using python (without the initial state), then go into the .inp file and delete the parts and assembly and replace them with the *IMPORT and *IMPORT ELSET keywords. Or script the entire model directly in the .inp file, however I would need to learn that from the beginning (I...
  18. Konsti

    Abaqus restart analysis

    ...the connector forces and displacements jump to their values from the previous analysis instantaneously in the first analysis increment. This seems correct. Therefore I do not need to do any extra imports? Simply copying the model and importing the initial state of the *instances only* is enough?
  19. Konsti

    Abaqus restart analysis

    ...Edit: diving into the documentation, I don't see an explanation of "configuration" and "state" of connectors: configuration being to which nodes they are attached to? And why not being able to import both? Do I need to *not* import the material state in order to import connector state? Konsti
  20. Konsti

    Abaqus restart analysis

    ...of details need to be taken care of regarding the materials, connectors, etc. In my case for example, the connector forces and displacements are *not* transferred to the new analysis by the initial state predefined field, because I can only choose part instances when I set this predefined...

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