Simulate Early, Simulate Often... In Rhino
Any idea why a simulation would not resolve? I have run this same scenario a number of times before without issue. Now it gets to 99% and hangs there. When it solved, it took about 5hr.46min. Now it gets to 99% in about 4 or 5 hours, then just hangs there. This one has been running for 21hr.32min. and is still at 99%. (Should I cancel it, or might it still resolve?) The only thing I changed is to move two faces on the left support (where the Z-only restraints are) to lengthen the span. I ran an analysis on just that end element and it resolved in about 35 sec. But when I run the entire assembly it now hangs like I said. I checked to make sure no volumes are overlapping, materials are specified, I even deleted all the loads, restraints, & components & re-defined them all from scratch. Still hangs. What gets me is that it has run before with no issue. I even copied the file to another machine & installed the trial pro version & tried it on that machine - same thing, hangs at 99%. I've tried it about 5 or 6 times, (2 on another comparable computer) since Tuesday morning. (3 days ago).
I am at max elements (500,000), there are about 98 components, only 2 different materials, custom defined Stainless Steels. Again, the same settings as previously run.
Attached is a shot of the current analysis hung at 99% after about 21 hours. Also attached is the last analysis that resolved. Like I said, the only thing I changed was the end faces of the left supports.
Any help or insight is greatly appreciated.
Ok, so it appears to have been some issue in the main file. In the original file, I have about 9 or 10 different scenarios & the file is about 1.2GB. It is a working file where I have been running simulations on different parts of the larger assembly for a few weeks, modifying components etc. My guess is that something got corrupted, or maybe too many solutions, or something else?
I selected only the geometry that was to be used in that scenario & exported it as a separate file. Then opened that new file & defined the scenario from scratch. This time it came to solution in 5hr 28min.
I'm sure it's hard to say with a file that size & that many scenarios run over & over, but any other specific ideas of what may have happened?
Thanks Scan & Solve . . . Cheers!