Just to make sure we are talking about the same thing, I am assuming this is the "B" matrix in classical FEA literature. If so, this is not something available to export from Nastran (I've asked a developer to make sure... I'll post back if I hear otherwise)... what do you need this matrix for?
Oh, that's too bad. Thanks for your quick reply anyway.
We're estimating the field of displacement and I wanted to check the corresponding field of strains by multiplying our estimates with the "B" matrix....
