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Contact Pipes I

Two pipes consisting of plastic material are modeled. The upper one is given an initial angular velocity and crushes into the stiffer lower one. Single surface contact is employed. See next example for usage of adaptivity. Download is available in the download section of this document.

Keywords

Keywords

This example has been taken from the introductory class of Prof. Dr. Ala Tabiei. Example name: pips.k

The used Keywords in alphabetical order.

*BOUNDARY_SPC_NODE
*CONTACT_SINGLE_SURFACE
*CONTROL_CONTACT
*CONTROL_ENERGY
*CONTROL_TERMINATION
*CONTROL_TIMESTEP
*DATABASE_BINARY_D3DUMP
*DATABASE_BINARY_D3PLOT
*DATABASE_ELOUT
*DATABASE_GLSTAT
*DATABASE_MATSUM
*DATABASE_NODOUT
*DATABASE_RCFORC
*ELEMENT_SHELL
*END
*INITIAL_VELOCITY_GENERATION
*KEYWORD
*MAT_PLASTIC_KINEMATIC
*NODE
*PART
*SECTION_SHELL
*SET_PART
*TITLE

Reduced Input

Reduced Input

This example has been taken from the introductory class of Prof. Dr. Ala Tabiei. Example name: pips.k

*Node and *Element Cards are removed.

  *KEYWORD
  *TITLE
  pipe whip simulation
  $---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
  $ mm, ton, s, N
  $ stationary pipe (material 1), Steel
  $ rotation pipe (materia 2), Alum.
  $ A. Tabiei, 3-1-98
  $---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
  *CONTROL_TERMINATION
  $   ENDTIM 
   0.002E+00 
  *CONTROL_TIMESTEP
  $   DTINIT      SCFT 
       0.000     0.900
  *CONTROL_CONTACT
  $   SLSFAC    RWPNAL    ISLCHK    SHLTHK
       0.100                   2         2
  $   USRSTR    USRFAC     NSBCS    INTERM
   
  *CONTROL_ENERGY
  $     HGEN      RWEN    SLNTEN     RYLEN
           2         1         1         1
  $---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
  *DATABASE_MATSUM
   0.100E-05
  *DATABASE_NODOUT
   0.100E-05
  *DATABASE_ELOUT
   0.100E-05
  *DATABASE_GLSTAT
   0.100E-05
  *DATABASE_RCFORC
   0.100E-05
  $---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
  *DATABASE_BINARY_D3PLOT
  $  DT/CYCL
  0.0001E+00
  *DATABASE_BINARY_D3DUMP
  $  DT/CYCL
   1.000E+05 
  $---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
  *PART 
  LOWER, stationary
  $      PID       SID       MID
           1         1         1
  *PART 
  UPPER, rotating 
  $      PID       SID       MID
           2         2         2
  $---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
  *MAT_Plastic_kinematic
  $      MID        RO         E        PR      SIGY      ETAN      BETA
           1 7.890E-09 2.100E+05 3.000E-01 4.400E+02 1.700E+03 1.000E+00
  $      SRC       SRP        FS
  
  *MAT_Plastic_kinematic
  $      MID        RO         E        PR      SIGY      ETAN      BETA
           2 2.730E-09 7.2408E+4 3.000E-01 9.500E+01 7.2408E+3 0.000E+00
  $      SRC       SRP        FS
  
  $---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
  *SECTION_SHELL                                                         
  $      SID    ELFORM      SHRF       NIP
           1         2 0.000E+00       3.0 
  $       T1        T2        T3        T4
   5.000E+00 5.000E+00 5.000E+00 5.000E+00
  *SECTION_SHELL 
  $      SID    ELFORM      SHRF       NIP
           2         2 0.000E+00       3.0
  $       T1        T2        T3        T4
   5.000E+00 5.000E+00 5.000E+00 5.000E+00
  $---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
  *INITIAL_VELOCITY_GENERATION
  $       ID      STYP     OMEGA
           2         2     100.0
  $       XC        YC        ZC        NX        NY        NZ     PHASE 
       635.0    -635.0   168.275        -1         0         0
  $---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
  *CONTACT_single_surface
           0 
   0.0000000 0.0000000 0.0000000 0.0000000 0.0000000         0 0.0000000 1.000E+20
   1.0000000 1.0000000 0.0000000 0.0000000 1.0000000 1.0000000 1.0000000 1.0000000
  $---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
  *set_part
  5
  2
  *set_part
  4
  1
  $---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
  *NODE
  $
  *ELEMENT_SHELL
  $---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
  *BOUNDARY_SPC_NODE
  $---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
  *END

Figures

Figures

This example has been taken from the introductory class of Prof. Dr. Ala Tabiei. Example name: pips.k

image01.gif

image02.gif

Animated Result

Animated Result

This example has been taken from the introductory class of Prof. Dr. Ala Tabiei. Example name: pips.k

Result

Download

Download

This example has been taken from the introductory class of Prof. Dr. Ala Tabiei. Example name: pips.k