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Simulation abaqus not proceeding forward

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abc123ali

Mechanical
Nov 6, 2023
90
Respected ABAQUS Users, The simulation for the attached file in which the central element with binder properties is under tension between the two plates but the simulation is not proceeding forward after two days of running time just it resulted a nodal output for 0.0006s but the status is shown running. Kindly help me to solve this problem. The cae file is attached here.
Thanks
 
 https://files.engineering.com/getfile.aspx?folder=b7e42d0f-35a0-45d3-8e91-f97e3bef8b26&file=caeplst1.cae
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Well, no wonder it takes so long. You have a step time of 300 s and an initial increment size of 1e-5 s (max increment size is 0.0001 s). Why such low values ? Amplitude time points have a resolution of 0.1 s and it's a static analysis so I would use much higher incrementation values. I would also try making the mesh coarser for now. Maybe you don't even need tie constraints and you could model this as a single part partitioned into 3 regions.
 
Actually if I use large values for increment then the error comes "time increment required is less than the minimum specified. I didnt get meaning "resolution of 0.1s". As I set amplitude with peak 0.15 and set the U2 tO 1 so it becomes 0.15s! Can you please explain.
Thanks
 
Then you should get rid of the convergence issue first. Try running it without Nlgeom, then check the plasticity definition. Those are the only sources of nonlinearities in this model. Of course, you can use lower increments than 0.1 s but e.g. 0.0001 s seems to be way too low here.
 
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