*Heading
 CPE4 elements; Static Step
** Job name: trial_spring_in_part Model name: Model-1
**
*Node
      1,          -1.,           1.
      2,          -1.,          0.5
      3,          -1.,           0.
      4,          -1.,         -0.5
      5,          -1.,          -1.
      6,         -0.5,           1.
      7,         -0.5,          0.5
      8,         -0.5,           0.
      9,         -0.5,         -0.5
     10,         -0.5,          -1.
     11,           0.,           1.
     12,           0.,          0.5
     13,           0.,           0.
     14,           0.,         -0.5
     15,           0.,          -1.
     16,          0.5,           1.
     17,          0.5,          0.5
     18,          0.5,           0.
     19,          0.5,         -0.5
     20,          0.5,          -1.
     21,           1.,           1.
     22,           1.,          0.5
     23,           1.,           0.
     24,           1.,         -0.5
     25,           1.,          -1.
*Element,type=z1,elset=one,file=lib_rbm_solid2d
10001,1,5,21,25
*substructure property,elset=one
*element,type=spring1,elset=spr
10002,25
*spring,elset=spr
2,
1000,
*Nset, nset=Set4
 25
*Nset, nset=Low_Left
 5
** 
**AMPLITUDE DEFINITION
*amplitude,name=ss,def=smooth step
0,0,0.2,1.,1.,1.
** ----------------------------------------------------------------
** 
** STEP: Stp1
** 
*Step, name=Stp1, nlgeom, inc=1000
Rigid Body Rotation
*Dynamic,alpha=-0.05,nohaf,direct=no stop
0.1, 1.
*controls,param=field
1.e-8,
** 
*boundary
Low_Left,1,2
** LOADS
** 
** Name: Lod1   Type: Concentrated force
*Cload,amp=ss
Set4, 1, 150.
Set4, 2, -500.
** 
** OUTPUT REQUESTS
** 
*output,field,Var=Preselect
*substructure path,enter=10001
*output,field
*node output
u
*element output
s,
*substructure path,leave
*End Step