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.
OK- but you don't have any viscous dampers in the sample you sent, so I assumed you wanted modal damping. If you are just looking for the physical viscous damping, then see the attached sample (which doesn't need PARAM,SESDAMP), which indeed exports all three matrices for all the grids... I added a CBUSH element with some viscous damping. Look past the K4AAX matrix for the BAAX.
OK- but you don't have any viscous dampers in the sample you sent, so I assumed you wanted modal damping. If you are just looking for the physical viscous damping, then see the attached sample (which doesn't need PARAM,SESDAMP), which indeed exports all three matrices for all the grids... I added a CBUSH element with some viscous damping. Look past the K4AAX matrix for the BAAX.
