*Heading
 membrane element: traction loading in large displacement analysis
** Job name: Job-1 Model name: Model-1
*Preprint, echo=NO, model=NO, history=NO, contact=NO
**
** PARTS
**
*Part, name=Part-1
*End Part
**
**
** ASSEMBLY
**
*Assembly, name=Assembly
**
*Instance, name=Part-1-1, part=Part-1
*Node
*Element, type=M3D4
*Node
*Nset, nset=Part-1-1-RefPt_, internal
** Region: (Section-1:Picked)
*Elset, elset=_PickedSet2, internal, generate
** Section: Section-1
*Membrane Section, elset=_PickedSet2, material=Material-1
1.,
*End Instance
**
*Instance, name=Part-1-1-1-2, part=Part-1
*Node
*Element, type=M3D8
*Node
*Nset, nset=Part-1-1-1-2-RefPt_, internal
** Region: (Section-1:Picked)
*Elset, elset=_PickedSet2, internal, generate
** Section: Section-1
*Membrane Section, elset=_PickedSet2, material=Material-1
1.,
*End Instance
**
*Instance, name=Part-1-1-2-1, part=Part-1
*Node
*Element, type=M3D3
*Node
*Nset, nset=Part-1-1-2-1-RefPt_, internal
** Region: (Section-1:Picked)
*Elset, elset=_PickedSet2, internal, generate
** Section: Section-1
*Membrane Section, elset=_PickedSet2, material=Material-1
1.,
*End Instance
**
*Instance, name=Part-1-1-2-2, part=Part-1
*Node
*Element, type=M3D6
*Node
*Nset, nset=Part-1-1-2-2-RefPt_, internal
** Region: (Section-1:Picked)
*Elset, elset=_PickedSet2, internal, generate
** Section: Section-1
*Membrane Section, elset=_PickedSet2, material=Material-1
1.,
*End Instance
**
*Nset, nset=_PickedSet10, internal, instance=Part-1-1
*Elset, elset=_PickedSet10, internal, instance=Part-1-1
*Nset, nset=_PickedSet11, internal, instance=Part-1-1
*Nset, nset=_PickedSet12, internal, instance=Part-1-1-1-2
*Elset, elset=_PickedSet12, internal, instance=Part-1-1-1-2
*Nset, nset=_PickedSet13, internal, instance=Part-1-1-1-2
*Nset, nset=_PickedSet14, internal, instance=Part-1-1-2-1, generate
*Elset, elset=_PickedSet14, internal, instance=Part-1-1-2-1
*Nset, nset=_PickedSet15, internal, instance=Part-1-1-2-1
*Nset, nset=_PickedSet16, internal, instance=Part-1-1-2-2
*Elset, elset=_PickedSet16, internal, instance=Part-1-1-2-2
*Nset, nset=_PickedSet17, internal, instance=Part-1-1-2-2
*Nset, nset=_PickedSet35, internal, instance=Part-1-1
*Nset, nset=_PickedSet35, internal, instance=Part-1-1-1-2
*Nset, nset=_PickedSet35, internal, instance=Part-1-1-2-2
*Nset, nset=_PickedSet35, internal, instance=Part-1-1-2-1
*Elset, elset=_Surf-1_SPOS, internal, instance=Part-1-1, generate
*Elset, elset=_Surf-1_SPOS, internal, instance=Part-1-1-1-2, generate
*Elset, elset=_Surf-1_SPOS, internal, instance=Part-1-1-2-2, generate
*Elset, elset=_Surf-1_SPOS, internal, instance=Part-1-1-2-1, generate
*Surface, type=ELEMENT, name=Surf-1
_Surf-1_SPOS, SPOS
*Surface, type=NODE, name=_PickedSet10_CNS_, internal
_PickedSet10, 1.
*Surface, type=NODE, name=_PickedSet12_CNS_, internal
_PickedSet12, 1.
*Surface, type=NODE, name=_PickedSet14_CNS_, internal
_PickedSet14, 1.
*Surface, type=NODE, name=_PickedSet16_CNS_, internal
_PickedSet16, 1.
** Constraint: Constraint-1
*Coupling, constraint name=Constraint-1, ref node=_PickedSet11, surface=_PickedSet10_CNS_
*Kinematic
1, 1
2, 2
3, 3
** Constraint: Constraint-2
*Coupling, constraint name=Constraint-2, ref node=_PickedSet13, surface=_PickedSet12_CNS_
*Kinematic
1, 1
2, 2
3, 3
** Constraint: Constraint-3
*Coupling, constraint name=Constraint-3, ref node=_PickedSet15, surface=_PickedSet14_CNS_
*Kinematic
1, 1
2, 2
3, 3
** Constraint: Constraint-4
*Coupling, constraint name=Constraint-4, ref node=_PickedSet17, surface=_PickedSet16_CNS_
*Kinematic
1, 1
2, 2
3, 3
*End Assembly
**
** MATERIALS
**
*Material, name=Material-1
*Density
 0.0001,
*Hyperelastic, neo hooke
752000.,26000.
*Initial conditions, type=stress
_Surf-1_SPOS, 1.0e2, 1.0e2
** ----------------------------------------------------------------
**
** STEP: Step-1
**
*Step, name=Step-1, nlgeom=YES, unsymm=YES
*Static
0.1, 1., 1e-05, 1.
**
** BOUNDARY CONDITIONS
**
** Name: BC-1 Type: Displacement/Rotation
*Boundary
_PickedSet35, 1, 1
_PickedSet35, 2, 2
_PickedSet35, 3, 3
_PickedSet35, 4, 4
_PickedSet35, 5, 5
_PickedSet35, 6, 6
**
** LOADS
**
** Name: Load-1   Type: Surface traction
*Dsload
Surf-1, TRVEC, 40., 0., 0., 1.
**
** OUTPUT REQUESTS
** FIELD OUTPUT: F-Output-1
**
*Output, field
*Node output
u,rf
*End Step
** ----------------------------------------------------------------
**
** STEP: Step-2
**
*Step, name=Step-2, nlgeom=YES, unsymm=YES
*Static
0.01, 1., 1e-05, 1.
**
** BOUNDARY CONDITIONS
**
** Name: BC-1 Type: Displacement/Rotation
*Boundary
_PickedSet35, 4, 4, 1.57
**
*End Step