*HEADING
: Adjust contact surface normal at symmetry plane
Small sliding example with C3D8 elements
Global coordinate system
*NODE, NSET=NROT
*ELEMENT, TYPE=C3D8, ELSET=EALL
*SOLID SECTION, ELSET=EALL, MATERIAL=MAT1
1.0,
*MATERIAL, NAME=MAT1
*ELASTIC
3000.0,0.2
*ELSET, ELSET=EIN
*ELSET, ELSET=EOUT
*NSET, NSET=NXSYMM
*NSET, NSET=NYSYMM
*ELSET, ELSET=EPRESS
*surface, NAME=MASTER
EIN,
*surface, NAME=SLAVE
EOUT,
*CONTACT PAIR,INTERACTION=NONE,SMALL SLIDING, TYPE=SURFACE TO SURFACE
SLAVE,MASTER
*SURFACE INTERACTION, NAME=NONE
*BOUNDARY
NXSYMM, XSYMM
NYSYMM, YSYMM
NXSYMM, 3,3
NYSYMM, 3,3
**
** STEP 1: Apply pressure load
**
*STEP, NLGEOM, INC=50
*STATIC
,1.0
*DLOAD
EPRESS,P4,100.0
*PRINT, CONTACT=YES
*NODE PRINT, F=0
*EL PRINT, F=0
*CONTACT PRINT, FREQ=100
*CONTACT FILE, MASTER=MASTER, SLAVE=SLAVE, FREQ=100
CSTRESS, CDISP
*END STEP
*STEP, NLGEOM, INC=50
**
** STEP 2 : Remove pressure load
**
*STATIC
,1.0
*DLOAD, OP=NEW
EPRESS,P4,0.0
*PRINT, CONTACT=YES
*NODE PRINT, F=0
*EL PRINT, F=0
*CONTACT PRINT, FREQ=100
*CONTACT FILE, MASTER=MASTER, SLAVE=SLAVE, FREQ=100
CSTRESS, CDISP
*END STEP