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Mike, did you ever get a resolution on this error? I am getting the same message when running a 25 ft long weldment with inertial loading ( factors of G). I am getting funny results showing one side deforming more than the other when they are symmetrical. When I run a half model, I get diffferent results on different days showing the hot spots in differnet areas. I suspect it may be routed in the message " Warning Element volume is too small (see output file)
Anyone know what this means and a work around?
I don't recall ever seeing that particular error message, but here's my two cents:
Check your mesh details. Really high aspect ratios or negative or highly distorted Jacobian values can lead to elements with extremely low volumes.
The solver could have a minimum volume criteria it uses as a shape check before it attempts to solve the analysis.
Also, run the jacobian check at the nodes. I'm not sure why performing a jacobian check at 4 points is the default setting, but running it at nodes isn't noticably slower and catches more bad elements.
Fantastic end quote Sam; a good laugh whilst having a element moment