I used the EXTSEOUT (ASMBULK EXTID = 15 DMIGPCH) to extract mass, stiffness and viscous damping matrices as pch file. The pch file contains KAAX and MAAX entries showing elements of stiffness and mass matrices, but there is no BAAX for damping.
I used the EXTSEOUT (ASMBULK EXTID = 15 DMIGPCH) to extract mass, stiffness and viscous damping matrices as pch file. The pch file contains KAAX and MAAX entries showing elements of stiffness and mass matrices, but there is no BAAX for damping.
I made up the value of 10... it would be whatever you know it should be... a viscous damper is something the user adds because they know they want/need it.
When you say the matrix based on material properties, I am assuming you mean the damping matrix, since that is what this thread was regarding... and yes, the material based damping (by defining GE on the material entries) can be extracted- that is what you have been seeing in the pch file as K4AAX... this is NOT viscous damping, but structural damping.
Also, the size of the matrices would be n*6, as there are 6 DOF for each node...
I made up the value of 10... it would be whatever you know it should be... a viscous damper is something the user adds because they know they want/need it.
When you say the matrix based on material properties, I am assuming you mean the damping matrix, since that is what this thread was regarding... and yes, the material based damping (by defining GE on the material entries) can be extracted- that is what you have been seeing in the pch file as K4AAX... this is NOT viscous damping, but structural damping.
Also, the size of the matrices would be n*6, as there are 6 DOF for each node...
