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modal Randam response stresses.

Pioneer
Pioneer

   Can anyone give a clear recommendation on the easiest way to get stress out of the Femap random, modal solution?  The Femap doc's don't cover it as far as I see and references to it are rather convoluted.  Seems like the SPCD card needs 386.4 factor when requesting stresses.  Is this implementable in Femap or does the card have to be edited manually?

  Infinite mass doesn't seem to run so we switched to nodal enforced displacement/acceleration and direct solution.  A modal frequency table is being used.  all other functions related to this are a constant 1.0, except of course the PSD stimulus function which is defined in log-lot G^2/Hz.

  I guess the trick is to get all these inputs consistent somehow.

 

RLOAD2,10,11,,,12,,ACCE

SPCD,11,2,386.4