*HEADING
 FRICTIONAL CONTACT BETWEEN A DEFORMABLE BLOCK OF CPE3 ELEMENTS AND 
 AN ANALYTICAL RIGID SURFACE WITH RATE-DEPENDENT COULOMB FRICTION 
 MODEL
**
** DEFORMABLE ELEMENT
**
*NODE,NSET=DELEM
101,-5.,0.0
102, 0.0,0.0
103, 0.0,1.
104,-5.,1.
*ELEMENT,TYPE=CPE3,ELSET=DELEM
101,101,102,103
102,101,103,104
*SOLID SECTION, ELSET=DELEM, MATERIAL=STUFF
 1., 
*MATERIAL, NAME=STUFF
*ELASTIC
 3.E7,0.33
*DENSITY
 7.3E-4, 
**
** RIGID SURFACE
**
*NODE,NSET=RMASS
201,5.,-1.
*ELEMENT,TYPE=MASS,ELSET=RMASS
200,201
*MASS,ELSET=RMASS
1.0, 
*NSET,NSET=NLOAD
104,103
*BOUNDARY
201,1,2
201,6,6
*INITIAL CONDITIONS,TYPE=VELOCITY
DELEM,1,200.0
DELEM,2,0.0
*INITIAL CONDITIONS,TYPE=STRESS
101,0.0,-2000.0
102,0.0,-2000.0
*SURFACE, TYPE=SEGMENT, NAME=RSURF
START, -7,  0.000
LINE,  5.,  0.000
*SURFACE,TYPE=ELEMENT,NAME=DEFORM
DELEM, 
*RIGID BODY,REF NODE=201, ANALYTICAL SURFACE =RSURF
**
*NSET, NSET=QA_TEST_ALLNODES
DELEM, RMASS, NLOAD
**
*STEP
*DYNAMIC,EXPLICIT
,0.001
**
** Analytical rigid surface 
**
*SURFACE INTERACTION,NAME=RSUR_PM
*FRICTION,USER,PROPERTIES=3
0.05,0.15,0.01
*CONTACT PAIR,INTERACTION=RSUR_PM
DEFORM,RSURF
*DLOAD
102,P2,2000.0
**
**  Some typical output requests.
**
*RESTART,TIMEMARKS=NO, WRITE, NUMBER=4
**
*FILE OUTPUT, NUMBER=4, TIMEMARKS=YES
*ENERGY FILE
*NODE FILE
 U,
**
***OUTPUT,HISTORY,TIME INTERVAL=0.
***NODE OUTPUT,NSET=DELEM
**U,V,RF,COORD
***NODE OUTPUT,NSET=RMASS
**U,V,RF,COORD
***ENERGY OUTPUT
**ALLIE,ALLKE,ALLPD,ALLSE,ALLVD,ALLWK,ETOTAL,ALLFD
**
*OUTPUT, FIELD, NUMBER INTERVAL=4, TIMEMARKS=YES
*NODE OUTPUT, NSET=QA_TEST_ALLNODES
 U,
*OUTPUT,FIELD,VARIABLE=PRESELECT
*OUTPUT,HISTORY,VARIABLE=PRESELECT,TIMEINT=0.00025
*END STEP