How to output global matrix: M, C, K, Q?

[XiaoxuD]

Is it possible to output a model's global matrix (M, C, K, Q) with Tcl at a certain time step during a transient analysis?
How to do it?
Should I change the OpenSees code?
Thank you.

[epsilon]

i was able to export global stiffness matrix of whole model with printA command (look at http://opensees.berkeley.edu/wiki/index ... tA_Command)

[selimgunay]

Please see the topic for M

http://opensees.berkeley.edu/community/ ... =2&t=64191

Once you have M and K, you can compute C from Rayleigh damping if you are using damping for all the structural elements