This comment is from Scot Baugh, CSWP, and was extracted from the Eng-Tips forum:

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SBaugh (Mechanical)
30 Apr 06 10:40

SW00 didn't have CosmosExpress nor the ability to save to a part. YOu have to be using at least SW04 or later before CosmosExpress was avail or save an assembly as a part... however CosmosExpress does not work with multi-bodies either, so you would have to make combine all the parts as single body. This will probably completely mess up your analysis, so you better bet would be to purchase Cosmos that away you could run an analysis on an assembly.

Regards,

Scott Baugh, CSWP
www.scottjbaugh.com
FAQ731-376

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