*INCLUDE, INPUT=solid/all.msh
*INCLUDE, INPUT=solid/fixed.nam
*INCLUDE, INPUT=solid/membrane.nam
*INCLUDE, INPUT=solid/material.inp
*AMPLITUDE,NAME=AMP1
0,0.1
2,1.0
*BOUNDARY
Nfixed,1,6
*DAMPING, ALPHA=5., BETA=2.e-2
*STEP, NLGEOM, INC=10000000
*DYNAMIC
1e-3, 30
*CLOAD
Nmembrane, 1, 0.0
Nmembrane, 2, 0.0
Nmembrane, 3, 0.0
*DLOAD
Eall,GRAV,9.80665,0,0,-1
*NODE FILE
U
*EL FILE
S
*END STEP