*Heading
** DSA, small-sliding contact with discrete rigid surface
   o Slave surface shape is design dependent
   o no friction
**
** PART INSTANCE: SOLID
**
*Dsa Controls, Tol=1.E-5
*Parameter
shape=0.0
dp=1.0
d1=0.001
c1=80.0*dp
*Design Parameter
shape,dp
*Parameter Shape Variation, parameter=shape
*System
*Node
*Element, type=CPE4
*Elset, elset=solid, generate
** Section: Section-1
*Solid Section, elset=solid, material=hyper
1.,
** ----------------------------------------------------------------
**
** PART INSTANCE: RIGID DIE
**
*System
*Node
*Element, type=R2D2
*Nset, nset=ref
*Elset, elset=die, generate
*Rigid Body, ref node=ref, elset=die
*System
**
** MATERIALS
**
*Material, name=hyper
*Hyperelastic
<c1>,   20., <d1>
**
** INTERACTION PROPERTIES
**
*Surface Interaction, name=IntProp-1
*Elset, elset=bot_die, generate
*Surface ,type=elem, name=master
bot_die, SPOS
*Elset, elset=top_solid
*Surface, type=elem,name=slave
top_solid, S3
*Contact Pair, interaction=IntProp-1, small sliding
slave,master
** ----------------------------------------------------------------
**
** STEP: Step-1
**
*nset,nset=bc
*Step, nlgeom, dsa
Step-1
*Static
0.1, 1.,
*Boundary
1,1,2
2,2,2
3,2,2
15,1,1,0.0
15,6,6,0.0
15,2,2,-0.3
***
*** Response Definition
***
*Output,field,freq=0
*Output,history,freq=0
*Design response,freq=6
*node response
u
*node response,nset=bc
rf
*element response
s
*contact response
cstress
*End Step