Hello,

In a modal analysis I want to create a lumped mass matrix for a cube and the corresponding stiffness matrix. The cube should initially only have nodes at the corners.

My APDL command is:

/aux2

file,file,full

LUMPM,on,--,0

hbmat,massenmatrix,txt,,ascii,mass,no,yes

hbmat,steifigkeitsmatrix,txt,,ascii,stiff,no,yes

finish

Unfortunately I get 108 mass entries with 8 nodes, which is a consistent mass matrix, but should only get 24 entries (8 nodes x 3 degrees of freedom per node)

I'm hoping someone can help me.

Regards

Zemos