Hello,
I am new to the field of simulation with LIGGGHTS. I have already done some tutorials and could already successfully import STL files here. I have a problem when importing a very large and complex geometry of a casting (many curves and different diameters).
My goal is to simulate how a sand core (assumed as powder) flows out of the part. Unfortunately I cannot import the desired geometry. The error message says that the STL file is bad mesh. I have tried to create a STL-file with gmesh, but unfortunately the calculation stops after 4 hours. Are there any limits to the complexity of geometry that can be imported into LIGGGHTS? How can a very complex geometry be imported or the STL-file be created?
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mschramm | Mon, 11/30/2020 - 17:14
Stopping simulation
Hello,
What does liggghts say at the end of 4 hours?
Many times in simulations, you have to work with a simplified geometry. How big is your stl file?
I can't remember where I heard this from but, each triangle is equivalent to 5-10 spheres.
MANU | Mon, 11/30/2020 - 17:25
Complex Geometry
I get the warning that MESH CONTAINS HIGHLY SKEWED ELEMENT, MOVING MESH WILL NOT PARALLELIZE WELL. The error message is Fix Mesh: Bad Mesh, cannot continue.
The STL file is 42.9MB in size.