user_material_viscoplastic.inp

**
**    Simple input file demonstrating user material in ABAQUS
**
**    This input file was created with ABAQUS/CAE, and then edited
**    to insert the additional commands associated with user material.
**
**    You can run the code with
**     abaqus job=user_element, user=Usermat.for
**
*Heading
** 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
      1,           0.,           0.
      2,          2.5,           0.
      3,           0.,          2.5
      4,          2.5,          2.5
**
** NOTE - if you use reduced integration elements
** with a UMAT, you have to define the hourglass
** stiffness for the element
**
*Element, type=CPE4R
1, 1, 2, 4, 3
*Nset, nset=_PickedSet2, internal, generate
 1,  4,  1
*Elset, elset=_PickedSet2, internal
 1,
** Region: (Section-1:Picked)
*Elset, elset=_PickedSet2, internal
 1,
** Section: Section-1
** THE LINE BELOW WAS EDITED TO ASSIGN THE USER MATERIAL
*Solid Section, elset=_PickedSet2, material=usermat_viscoplastic
1.,
*hourglass stiffness
0.1
*End Instance
**  
*Nset, nset=_PickedSet4, internal, instance=Part-1-1
 1, 2
*Elset, elset=_PickedSet4, internal, instance=Part-1-1
 1,
*Nset, nset=_PickedSet5, internal, instance=Part-1-1
 1, 3
*Elset, elset=_PickedSet5, internal, instance=Part-1-1
 1,
*Nset, nset=_PickedSet6, internal, instance=Part-1-1
 3, 4
*Elset, elset=_PickedSet6, internal, instance=Part-1-1
 1,
*End Assembly
** 
** MATERIALS
**
**  THE LINES BELOW WERE EDITED TO DEFINE THE USER MATERIAL
**  The constants are E, nu, Y, e0, n, edot0, m 
*Material, name=usermat_viscoplastic
*user material, constants=7, type=mechanical
 1000.0, 0.3, 10., 0.1, 3., 0.1d0, 10.
** This defines the number of state variables (one or two in this case)
*DEPVAR
2
** ----------------------------------------------------------------
** 
** STEP: Step-1
** 
*Step, name=Step-1, Nlgeom=Yes
*Static
0.1, 1., 1e-05, 0.1
** 
** BOUNDARY CONDITIONS
** 
** Name: BC-1 Type: Displacement/Rotation
*Boundary
_PickedSet4, 2, 2
** Name: BC-2 Type: Displacement/Rotation
*Boundary
_PickedSet5, 1, 1
** Name: BC-3 Type: Displacement/Rotation
*Boundary
_PickedSet6, 2, 2, 0.1
** 
** OUTPUT REQUESTS
** 
*Restart, write, frequency=0
** 
** FIELD OUTPUT: F-Output-1
** 
*Output, field, variable=PRESELECT
** 
** HISTORY OUTPUT: H-Output-1
** 
*Output, history, variable=PRESELECT
*End Step