*Part, name=Part-1
*End Part
*Assembly, name=Assembly
**  
*Instance, name=Part-1-1, part=Part-1
*Node
      1,          -5.,          2.5,           0.
      2,          -5.,           0.,           0.
      3,          -5.,         -2.5,           0.
      4,         -2.5,          2.5,           0.
      5,         -2.5,           0.,           0.
      6,         -2.5,         -2.5,           0.
      7,           0.,          2.5,           0.
      8,           0.,           0.,           0.
      9,           0.,         -2.5,           0.
     10,          2.5,          2.5,           0.
     11,          2.5,           0.,           0.
     12,          2.5,         -2.5,           0.
     13,           5.,          2.5,           0.
     14,           5.,           0.,           0.
     15,           5.,         -2.5,           0.
*Element, type=S4R
1,  1,  2,  5,  4
2,  2,  3,  6,  5
3,  4,  5,  8,  7
4,  5,  6,  9,  8
5,  7,  8, 11, 10
6,  8,  9, 12, 11
7, 10, 11, 14, 13
8, 11, 12, 15, 14
** Region: (Secn:Picked)
*Elset, elset=_I1, internal, generate
 1,  8,  1
** Section: Secn
*Shell Section, elset=_I1, material=Elas
0.5, 5
*element,type=spring1,elset=spr
10002,13
*spring,elset=spr
3,
2000,
*End Instance
*Nset, nset=_Set4, internal, instance=Part-1-1
  1,  3, 
*Nset, nset=_Set5, internal, instance=Part-1-1
 15,
*End Assembly
** 
** MATERIALS
** 
*Material, name=Elas
*Density
40
*Elastic
 1e+08,0.
** ----------------------------------------------------------------
*Step, name=Stp1, inc=1000
Small Deformation
*Static
0.1, 1., 0.1, 0.1
*controls,param=field
1.e-8,
*Boundary
_Set4, PINNED
*Dload
Part-1-1._I1,Grav,20,0,0,-1 
*Output, field
*node output
u,
*element output
s,
*End Step