How to export mass and stiffness matrices of a large model?

Hi,

up to now, I've applied the command EXTSEOUT (STIFFNESS MASS ASMBULK EXTID = 10 DMIGPCH) to get the matrices as a byproduct of the superelement reduction process.

This is ok for models of moderate size.

However, this approach seems not reasonable for rather large models (~1.000.000 nodes) as the intermediate files like *.DBALL are blown up to more than 16 GB and the computations take ages.

Since I'm not interested in the external superelement itself I'm wondering if there might be a simpler way to export the system matrices without extensive reduction computations.

Best regards,

Johannes

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0 JohLut over 5 years ago

I'm not reducing the model, but I'd like to incorporate MPC and SPC sets.

So what I'm doing is trying to get the "full" (ASET) matrices....

Edit: Thanks for your quick reponse. I'm gonna try these commands then

MATGPR GPLS,USET0,SILS,MAA//'A' $

MATGPR GPLS,USET0,SILS,KAA//'A' $
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0 JohLut over 5 years ago

I'm not reducing the model, but I'd like to incorporate MPC and SPC sets.

So what I'm doing is trying to get the "full" (ASET) matrices....

Edit: Thanks for your quick reponse. I'm gonna try these commands then

MATGPR GPLS,USET0,SILS,MAA//'A' $

MATGPR GPLS,USET0,SILS,KAA//'A' $
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Vote Up 0 Vote Down

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