*Node
*Node
*Element, type=CPE4
*Elset, elset=ASSEMBLY_BAR_HOR_BOT__I1
*solidsection, elset=ASSEMBLY_BAR_HOR_BOT__I1, material=ELASTIC
*Elset, elset=ASSEMBLY___SURF93_S1
*Elset, elset=ASSEMBLY___SURF93_S2
*Elset, elset=ASSEMBLY___SURF93_S4
*Elset, elset=ASSEMBLY___SURF95_S1
*Elset, elset=ASSEMBLY___SURF95_S2
*Elset, elset=ASSEMBLY___SURF95_S4
*Elset, elset=ASSEMBLY___SURF102_S2
*surface, type=ELEMENT, name=ASSEMBLY__SURF93
ASSEMBLY___SURF93_S2, S2
ASSEMBLY___SURF93_S4, S4
ASSEMBLY___SURF93_S1, S1
*surface, type=ELEMENT, name=ASSEMBLY__SURF95
ASSEMBLY___SURF95_S2, S2
ASSEMBLY___SURF95_S1, S1
ASSEMBLY___SURF95_S4, S4
*Nset, nset=ASSEMBLY__SET94
*Nset, nset=ASSEMBLY__SET96
*coupling, constraintname=COUPH_BOT_LEFT, refnode=ASSEMBLY__SET96, surface=ASSEMBLY__SURF95
*distributing, weightingmethod=UNIFORM
*coupling, constraintname=COUPH_BOT_RIGHT, refnode=ASSEMBLY__SET94, surface=ASSEMBLY__SURF93
*distributing, weightingmethod=UNIFORM
******************************************************
*material, name=ELASTIC
*elastic
2.1E+11, 0.3
*density
7.E-3,
******************************************************
*step
*frequency,eigen=lanc
6,
*boundary
5,1,2
5,6,6
6,1,2
6,6,6
*output,field,freq=0
*output,hist,freq=0
*end step
*step
*substructure generate,type=z1,overwrite,mass=yes,
libr=4bar,grav=yes,recovery=yes
*RETAINED NODAL DOFS,SORTED=NO
*RETAINED EIGENMODES
*substructure matrix output, stiffness=yes, mass=yes,
file=4bar,grav=yes,recovery=yes
*end step