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  1. dfgsdfgfd

    Excessively Distorted Elements with General Contact in 2D Explicit?

    In case other people are interested, the problem had to do with the cross-sectional shape of the beams, which had a high thickness-to-depth ratio in my case that messed things up.
  2. dfgsdfgfd

    Excessively Distorted Elements with General Contact in 2D Explicit?

    (1) the warnings showed lots of issues with overclosures First, there's about 3000 messages like this: Initial node-face overclosure is 1.4702 at node 537 of instance ASSEMLATTICE and face S1 of element 145 of instance ASSEMLATTICE Second, there's another 3000 messages like this: Adjacent...
  3. dfgsdfgfd

    Excessively Distorted Elements with General Contact in 2D Explicit?

    Does anyone else have an idea on how to solve this issue?
  4. dfgsdfgfd

    Excessively Distorted Elements with General Contact in 2D Explicit?

    Good points, the only thing is that it all works fine if I don't apply General Contact: https://www.dropbox.com/s/rf5dzvy69fvc30b/model.cae?dl=0 Thanks for your help with this!
  5. dfgsdfgfd

    Excessively Distorted Elements with General Contact in 2D Explicit?

    The lattice is modeled as one single part (wire). No tie constraints, as the lattice needs to be able to slide on the plates as it compresses.
  6. dfgsdfgfd

    Excessively Distorted Elements with General Contact in 2D Explicit?

    I have a 2D lattice structure, where each strut consists of multiple beam elements (B22). The lattice is sandwiched between two plates, that compress the lattice. I run the simulation on Abaqus Explicit and apply General Contact. However, already in the very first computation, before the lattice...
  7. dfgsdfgfd

    How to define axisymmetric coupled thermal-electrical-structural elements?

    Hi, I'm trying to do an axisymmetric coupled eletrical-structural analysis in Abaqus 2017, for which I select the "CoupledThermalElectricalStructuralStep". However, there are no "Coupled thermal-electrical-structural elements" available to do the simulation. For the 3D case, there are a bunch...
  8. dfgsdfgfd

    How to set Contact Initialization in Abaqus/Explicit?

    Thank you very much for the explanation, Mustaine3. I really appreciate your constant help in this forum -- not just on my questions, but on other questions that help me and everyone else, too.
  9. dfgsdfgfd

    How to set Contact Initialization in Abaqus/Explicit?

    Hi everyone, I'm running an ABAQUS/EXPLICIT simulation where I get a lot of initial edge-edge overclosures. In both, the GUI and with Python, I can set the settings for these overclosures within the "Contact Initialization" tree (e.g. CInit-1). However, when I create the "General Contact" in...
  10. dfgsdfgfd

    Explicit: Elements fly away and give "Excessive Rotation" error message

    Hi all, I'm running explicit simulations of a lattice structure with beam elements that deform significantly (i.e. 80% strain). Most of the time, the simulations run just fine. However, in some instances, I get the following error message before the simulation is finished. When I track down...
  11. dfgsdfgfd

    ABAQUS/Explicit not "converging" -- How to stop simulation?

    Thanks for the response. I'm aware of the differences and ways to speed up the analysis. My log shows only a fraction -- it continues without moving on to the next increment for another 200 steps or so, and there is no end in sight. Hence my question: Is it possible to set a minimum stable...
  12. dfgsdfgfd

    ABAQUS/Explicit not "converging" -- How to stop simulation?

    Hi, When I run my Abaqus/explicit simulation, sometimes it is not converging. The output looks as follows and keeps on going forever, without moving on to the next interval. Is it possible, similarly to the implicit solver, to set a minimum stable element size OR set a maximum number of...
  13. dfgsdfgfd

    Is it possible to create a solid model from a beam model?

    Hello everyone, I have a 3D lattice structure created meshed with beam elements from coordinates and connections. Is it possible, to create a solid model from it? More specifically, to extrude the beams and mesh them with solid elements (without actually having a solid 3D model/part). I'm...
  14. dfgsdfgfd

    How to limit memory in preprocessing using Abaqus CAE noGui= with Abaqus/Explicit?

    Hi everyone, I'm trying to run an Abaqus Explicit simulation on a cluster via bash. Regardless on how much memory I allocate (I tried up to 60 gb), it's not enough and I get the error message: The error appears during the preprocessing after the STABLE TIME INCREMENT INFORMATION is created in...
  15. dfgsdfgfd

    [ABAQUS] Is it possible to run an .inp file written in 6.14-4 in an ABAQUS/Standard 6.14-1 version?

    Hi Omar, Did you meanwhile solve the problem? I'm running into similar issues. Thanks!
  16. dfgsdfgfd

    Boundary condition to allow nodes to move in parallel?

    You're missing the point of the question. What I show is only an example to demonstrate the problem. SYmmetries wouldn't make any difference. Mustaine3 already fully answered my question.
  17. dfgsdfgfd

    Boundary condition to allow nodes to move in parallel?

    Thank you very much. I now used the proposed solution with the equation, which works like a charm. It's also good to know about the first solution with the kinematic coupling. Thanks!
  18. dfgsdfgfd

    Boundary condition to allow nodes to move in parallel?

    Thanks very much for the quick response. When I add kinematic coupling, the simulation doesn't converge anymore: Here's what I do: 1. Create reference point outside the structure 2. Constraints -> Create Constraint -> Coupling 3. Select the Reference Point 4. Choose "Surface" and select the...
  19. dfgsdfgfd

    Boundary condition to allow nodes to move in parallel?

    Hello everyone, I have a structure, where I want to constrain the nodes on one surface in X direction such that they are allowed to move, but only in parallel. Or, in other words, all nodes on the surface must move the same distance, if there's movement going on. There certainly are some...
  20. dfgsdfgfd

    Automatic definition of beam element cross-section orientation and normal?

    I have a wire (or a set of wires) created through ".WirePolyLine", which I'm trying to mesh with the beam elements.

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