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.
Hello, In this sample you have considered a value of 10 for physical viscous damping between grids 5 and 6 as an input. Why would it be 10? It is not possible to extract the matrix based on material properties of the model?
I am going to get physical K, M and C matrices that are n by n ( n is the number is nodes) and multiply them by mode shape matrix to get modal K,M and C matrices that are m by m (m is number of mode shapes). So another solution is to extract modal matrices directly.
Hello, In this sample you have considered a value of 10 for physical viscous damping between grids 5 and 6 as an input. Why would it be 10? It is not possible to extract the matrix based on material properties of the model?
I am going to get physical K, M and C matrices that are n by n ( n is the number is nodes) and multiply them by mode shape matrix to get modal K,M and C matrices that are m by m (m is number of mode shapes). So another solution is to extract modal matrices directly.
