*Node,nset=retained
84, 50, 30, 0
87, 10, 30, 0
88, 10, -30, 0
89, 50, -30, 0
*element,type=z101,file=substr_box_ac2d4_moddyn_gen,elset=z1
10001,88,89,87,84
*substructure property,elset=z1
**------------------------------------------------
*amplitude,name=const
0,1.0,  1.0,1.0
*BOUNDARY
retained,1,2
*STEP
*FREQUENCY,norm=mass
189,,,-1
*OUTPUT,FIELD
*NODE OUTPUT
U,
*SUBSTRUCTURE PATH, ENTER=10001
*OUTPUT,FIELD,freq=1
*NODE OUTPUT
U,por
*SUBSTRUCTURE PATH, LEAVE
*END STEP
**------------------------------------------------
*STEP
*DYNAMIC,alpha=0,initial=no,DIRECT
0.001,0.1
*sload
10001,load91,1.0
*output,history
*node output,nset=retained
rf,
*SUBSTRUCTURE PATH, ENTER=10001
*OUTPUT,HISTORY
*NODE OUTPUT,nset=cload1
u,
*SUBSTRUCTURE PATH, LEAVE
*end step