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Example Model CONTI2

This example illustrates the modelling of contact via the definition of contact surfaces in a two-dimensional case. Only parts of the resulting ABAQUS input file is shown.

**Figure 9.4:** Example 2D Contact
$\begin{figure} \centerline{ \psfig {figure=ex4.ps,width=5.0in} }\end{figure}$

FEMGEN Commands for Model CONTI2

 
 PROPERTY FE-PROG ABAQUS
! Geometry modelling
 GEOM POINT P1        0    
 GEOM POINT P2        10    
 GEOM POINT P3        0 10    
 GEOM POINT P4        -10    
 GEOM POINT P5        0 11   
 GEOM POINT P6        -11    
 GEOM POINT P7        -21   
 GEOM POINT P8        0 21    
 GEOM POINT P9        50 21    
 GEOM POINT P10       50 11    
 GEOM LINE ARC L1       P4       P3       P1           16
 GEOM LINE ARC L2       P3       P2       P1            8
 GEOM LINE STR L3       P4       P1           16
 GEOM LINE STR L4       P1       P3           16
 GEOM LINE STR L5       P1       P2            8
 GEOM LINE ARC L6       P6       P5       P1           20
 GEOM LINE ARC L7       P7       P8       P1           20
 GEOM LINE STR L8       P6       P7           16
 GEOM LINE STR L9       P8       P5           16
 GEOM LINE STR L10      P9       P10          16
 GEOM LINE STR L11      P8       P9           32
 GEOM LINE STR L12      P5       P10          32
 GEOM SURF 4SID S1       L11      L9       L12      L10     
 GEOM SURF 3SID S2       L1       L3       L4      
 GEOM SURF 3SID S4       L2       L4       L5      
 GEOM SURF 4SID S5       L6       L9       L7       L8      
! Contact surface definition
 CONSTRUCT SET OPEN SURF1   
 CONSTRUCT SET APPEND L6      
 CONSTRUCT SET CLOSE 
 CONSTRUCT SET OPEN SURF2   
 CONSTRUCT SET APPEND L1      
 CONSTRUCT SET CLOSE 
! Mesh generation
 MESHING TYPE S1       QU8      2
 MESHING TYPE S2       TR6      1
 MESHING TYPE S4       TR6      1
 MESHING TYPE S5       QU8      2
 MESHING GENERATE
! Material and physical properties
 PROP MAT ELASTIC  STEEL 0.20000E+06 0.30000 0.78600E-05 0.00000 0.00000            
 PROP PHYS THICKNES TH1 1.0000             
 PROP ATTACH S1       STEEL    TH1     
 PROP ATTACH S2       STEEL    TH1     
 PROP ATTACH S4       STEEL    TH1     
 PROP ATTACH S5       STEEL    TH1     
! Boundary conditions, step and load definition
 PROP BOUNDARY CONSTRAINT CO1      L8              2
 PROP BOUNDARY CONSTRAINT CO2      L3              2
 PROP BOUNDARY CONSTRAINT CO3      L5              2
 PROP BOUNDARY ELASTIC CO4      P7              1    10.0    
 PROP BOUNDARY CONSTRAINT CO5      L2              1
 PROP LOAD PRESSURE LO1 1 L10 -100.00 0 
 PROP LOAD STEP-DEF LO2 1 ALL 0 1 0 0 0 0
! Contact pair definition
 PROP BOUNDARY GENERAL CO6       SURF1          1 SURF2          1   0.300    
 UTILITY WRITE ABAQUS conti2.inp
 YES

**Figure 9.5:** Geometry for 2D Contact Example
$\begin{figure} \centerline{ \psfig {figure=ex4_lab.ps,width=5.0in} }\end{figure}$

ABAQUS Input Deck for Model CONTI2

 
************************************************
** ABAQUS 5.7 INPUT DECK                       *
** CREATED BY FEMGV VERSION 5.001              *
** TRANSLATED BY FEMGEN-ABAQUS VERSION 4.320   *
** FILE CREATED: DATE 02/04/1998 TIME 17:55:44 *
************************************************
**
**********************************************
** NO ADDITIONAL INPUT FILE                  *
** .FIL RESULT FILE SELECTED                 *
** BINARY RESULT FILE FORMAT SELECTED        *
** MESSAGE LOGGING IS OFF                    *
** DIALOG SESSION IS OFF                     *
** SMALL NODE/ELEMENT NUMBERS SELECTED       *
** ABAQUS/Standard SELECTED                  *
** EXTERNAL MATERIAL DIRECTORY NOT USED      *
** EXTERNAL PHYSICAL DIRECTORY NOT USED      *
** EXTERNAL RESULT OUTPUT FILE NOT USED      *
**********************************************
**
*HEADING        
FEMGEN MODEL CONTI2 TRANSLATED BY PRE-ABAQUS 4.320 TITLE: No model title      
**
**********************************************
** MODEL DEFINITION ...                      *
**********************************************
**
*******************
** MODEL GEOMETRY *
*******************
**
*NODE, NSET=ALLNODE
         1,  50.00000    ,  21.00000    , 0.0000000E+00
...
       910, -1.647642    ,  20.93526    , 0.0000000E+00
*ELEMENT, TYPE=CPE8    , ELSET=S1      
    1    1    2   19   18  154  171  187  170
...
  128  135  136  153  152  400  417  433  416
*ELEMENT, TYPE=CPE6    , ELSET=S2      
  129  434  435  443  479  488  487
...
  192  476  477  478  584  586  585
*ELEMENT, TYPE=CPE6    , ELSET=S4      
  193  434  443  587  487  604  603
...
  224  600  601  602  647  650  649
*ELEMENT, TYPE=CPE8    , ELSET=S5      
  225  651  652  662  661  741  752  761  751
...
  304  730   34   17  740  890  186  910  900
*ELEMENT, TYPE=SPRING1, ELSET=SPR1    
     305 ,      731
**
********************
** SET DEFINITIONS *
********************
**
** SET PHY1     IS ELEMENT TYPE:CPE8     ,PROPERTY:TH1     ,MATERIAL:STEEL      
*ELSET, ELSET=PHY1    
S1      ,S5      ,
** SET PHY2     IS ELEMENT TYPE:CPE6     ,PROPERTY:TH1     ,MATERIAL:STEEL      
*ELSET, ELSET=PHY2    
S2      ,S4      ,
*ELSET, ELSET=ALL
PHY1    ,PHY2    ,
*ELSET, ELSET=CONTI2  
ALL
**
*************************
** PROPERTY DEFINITIONS *
*************************
**
*SOLID SECTION, ELSET=PHY1     ,MATERIAL=STEEL   
  1.000000    ,
*SOLID SECTION, ELSET=PHY2     ,MATERIAL=STEEL   
  1.000000    ,
*SPRING, ELSET=SPR1    
    1
  10.00000    ,
**
*************************
** MATERIAL DEFINITIONS *
*************************
**
*MATERIAL, NAME=STEEL   
*DENSITY
 0.7860000E-05,
*ELASTIC, TYPE=ISO
200.0E+03,0.300    ,000.0E+00
*EXPANSION, ZERO= 0.0000000E+00
 0.0000000E+00, 0.0000000E+00
**
**************************
** KINEMATIC CONSTRAINTS *
**************************
**
*NSET, NSET=L8      
  651  751  661  771  671  791  681  811  691  831  701  851  711  871  721  891
  731
*BOUNDARY
L8      ,    2,    2
*NSET, NSET=L3      
  442  502  450  523  457  541  463  556  468  568  472  577  475  583  477  586
  478
*BOUNDARY
L3      ,    2,    2
*NSET, NSET=L5      
  478  617  593  634  598  645  601  650  602
*BOUNDARY
L5      ,    2,    2
*NSET, NSET=L2      
  434  603  587  624  594  639  599  648  602
*BOUNDARY
L2      ,    1,    1
**
************************
** CONTACT DEFINITIONS *
************************
**
*ELSET, ELSET=SURFE1  
  225,  226,  227,  228,  229,  230,  231,  232,  233,  234,
*SURFACE DEFINITION, NAME=SURF1   
SURFE1  ,S1         
*ELSET, ELSET=SURFE2  
  129,  131,  133,  135,  137,  139,  141,  143,
*SURFACE DEFINITION, NAME=SURF2   
SURFE2  ,S1         
*CONTACT PAIR, INTERACTION=CO6     ,ADJUST= 0.1E-01,SMALL SLIDING
SURF1   ,SURF2   
*SURFACE INTERACTION, NAME=CO6     
*FRICTION
0.3000000
**
**********************************************
** HISTORY DEFINITION ...                    *
**********************************************
**
**********************************************
** FEMGEN LOADCASE     1 *
**************************
**
*STEP,INC=100,NLGEOM                                                            
*STATIC
0.1, 1.0
*ELSET, ELSET=FL10    
    1   17   33   49   65   81   97  113
*DLOAD, OP=MOD                    
FL10     , P4 ,  -100.0000    
**
***************************
** RESULTS OUTPUT CONTROL *
***************************
**
*NODE FILE
U
*EL FILE, POSITION=AVERAGED AT NODES
S,E
*EL FILE, POSITION=NODES
S,E
*EL FILE, POSITION=INTEGRATION POINTS
S
*EL FILE, POSITION=INTEGRATION POINTS
COORD
*EL FILE, POSITION=INTEGRATION POINTS
E
*END STEP
**
**********************************************

Femsys Limited
9/9/1999