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  1. JaviSanchez

    Nastran external superelement and forces recovery

    Hi there, Let's see if some of you can help me with the following issue, please: I am working on the mechanical analysis of a satellite (spacecraft(SC)+ payload(PL)). I need to create an external superelement (ESE) of th PL and validate the process by comparing the results obtained with the...
  2. JaviSanchez

    Nastran external superelement and forces recovery

    Hi there, Let's see if some of you can help me with the following issue, please: I am working on the mechanical analysis of a satellite (spacecraft(SC)+ payload(PL)). I need to create an external superelement (ESE) of th PL and validate the process by comparing the results obtained with the...
  3. JaviSanchez

    Method to calculate interface forces in random vibe analysis?

    I have a question for you: I would like to know how to get interface forces in random vibration analysis, in order to check bolted joints survival. What I use to do is to place 6 CELAS elements (1 per DOF) in the interface (between an RBE2 and a node) and then I get the 3xRMS forces in the CELAS...
  4. JaviSanchez

    Combine Random vibration and functional loads FEMAP 10.2 (Nastran)

    Hi everybody Here I come with an easy one. I think my case must be so typical. I need to combine random vibration and other functional loads (bolts preloads and pressure loads)in a model. I know how to combine functional loads but I don't know how to porceed with random vibration, in order to...

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