Can we get the stiffness matrix as an output of a Radioss simulation?

JL5ive · March 6

Hi, I am using Radioss 2022.3 and I'd like to get the stiffness matrix as additional output of the simulation. I didn't find any way to do that for the moment. Is it possible? If not, do other solutions exist to get this matrix (with other solvers maybe?)

Thank you in advance.

Adriano_Koga · March 6

considering other solver, in this case OptiStruct, please refer to this discussion:

How to output element stiffness matrix to ASCII file in Optistruct

Anoop_20407

Dec 27, 2023

Hello everyone,

I’m beginner in use Optistruct and currently working on solving a static linear elastic problem. I’ve been trying to find a way to output the element stiffness matrix to a ASCII result file. Could someone please guide me on whether this is possible and, if so, provide instructions on how to achieve this?

Your assistance would be greatly appreciated.

Thank you in advance!

Anoop

PierreChristophe_Altair · March 11

Hi,

Would you expand why you would like to output stiffness matrix?

In explicit solver, as Radioss, we are not so much considering stiffness matrix and there is no computed global stiffness matrix.

Regards

Can we get the stiffness matrix as an output of a Radioss simulation?

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How to output element stiffness matrix to ASCII file in Optistruct

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