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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.

(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...

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

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!

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.

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...

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...

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.

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...

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...

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...

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...

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...

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...

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

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.

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!

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...

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...

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