Learning Forum

[Aymen Karim]

Hi everyone here!

I have modelled of bridge deck in Ansys, however, I need the system matrices (K, M, C) for offline postprocessing using Matlab.

I know how to export them but they will give a vector of numbers of vague say stiffness matrix.

which is very difficult to use or understand.

is there any method to watch the gloabl stiffness matrix interms of its system parameters for example:

K=[k1+K2 -K2;-K2 k2] for 2 dof system?

is that possible?

Thank You!

[mrife]

Aymen

It's not apparent what you really want...in your example are k1 and k2 symbolic or numerical values?

Mike

[Aymen Karim]

Hello Mike,

I have to use the stiffness matrix later in Matlab, so I want symbolic stiffness matrix just as how I have already mention in my post. I will later in Matlab define stiffnesses.

I know Ansys give only I think sparse matrix of stiffness matrix entries, however is there any way to get the matrix in symbolic way?

Thanks

[mrife]

Aymen

No you can not get the symbolix matrix with the usual tools.  However if you are willing to put in the work the EMAT file (element matrix) has the information needed and can be accessed with PyMAPDL Reader:

https://reader.docs.pyansys.com/version/stable/index.html

Mike