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Meshing and Analysis of Large Models

Question asked by Cory Langenkamp on Mar 7, 2013
Latest reply on Mar 14, 2013 by Jared Conway

I have a tubular drilling mast structure that is around 50 ft tall That I am trying to analyze. I have tried a beam analysis, but the results I got back were questionable, and my supervisor has decided not to persue that method of analysis.

 

The mast has been joined into a large single part. The mesh was difficult to create, and as such is rather fine do to the thickness of the tube. The model has approximately 30 million DOF, due to the large mesh. Applied loads are only forces, and restraints are simple fixed hinges and roller-sliders. The mesh itself takes about 25 minutes to complete, and the analysis takes about 15 minutes.

 

My problem arises when I try to view the results. When trying to open any results files, Solidworks enters a state of fluctuating lock-ups, and the results, if they decide to show up, take a bout 30 minutes to do so. And if they do appear, they are usually garbage. A change in any simulation parameters displays the EXACT SAME results, regardless of the machine the analysis is run on. (I have tried on 2 seperate machines with similar capabilities, transfering the model only, and none of the results files)

 

Has anyone ever seen this before? Does anyone have any ideas as to why this is happening?

 

Attached are two images of the stress results. I'm sorry, but I cannot post the model for legal reasons.

 

The machines I ran this on are running Windos 7 65-bit on Intel i7 3.40 GHz processors, with 32GB memory. The working directory is on a SSD.

 

Thanks for any help you can provide.

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