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SOLRAM at 7000 for this analysis is overkill. However when I ran this analysis I had upgraded to 16 gig ram. I just leave it there rather than mess with it. This run is a quite a bit slower than normal. 12 gigs of my ram is on loan to another engineer. The other factor is that running more...

This is a little brut force but first 3 modes match result of a sine sweep at .5 g for the original design within 2%. I have a couple of parts that could have been done as shells but they would only have reduced model size by 10-15%. I did have some early runs that went 6th & 7th order but a...

Mechanica works well on assemblies. Simplification usually requires significant reduction of components in addition to simplification of each component. Symmetrical divisions of model can be done with assembly cuts. I always remove fasteners and then rebuild the connection with something less...

After bumping to 12 gigs of ram I ran some tests. seymours2571 excellent answer seems to match test results.

Does anyone know of a source for a material library for use with Mechanica? My company's materials library is a complete mess & I suspect that it would be less expensive to buy a good one with minimal errors than to fix or recreate ours. I just found that correcting the values for AL6061-T6 in...

I agree that this is a memory issue. Options: Brute force with 64bit operating system and more memory. Cheap compared the the cost to your company of banging head with little results. Take another look at reducing the complexity of your model. This is safer to do after you have a preliminary...

Finally got a 64bit Windows 7 box just in time for a fairly complex modal analysis that would not run on my 32bit machine. I am trying to set up the Memory Allocation in the "Run Settings" "Solver Settings". I had a rule of thumb for 32bit machines but no idea what it should be for a 64bit...